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Fuel Flow and Economy Figures

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Category: General Forums
Forum Name: The Boat Shed
Forum Description: Discuss all things boating.
URL: https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102
Printed Date: 28 Mar 2024 at 10:24pm


Topic: Fuel Flow and Economy Figures
Posted By: Bender
Subject: Fuel Flow and Economy Figures
Date Posted: 13 Jan 2008 at 6:01pm
In order to throw some light on some of the "real-time" and "actual" fuel usage figures being achieved by forum members, I thought I would start this thread so we can all contribute through the season.
 
This is particularly so during the game season - because as we all know, the price of fuel is not dropping and a day's trolling is starting to get nearly as expensive as a shoreboys night at the New Brew.
 
If you can, please fill out the following criteria with each post.
 
Date:
Boat:
Size:
Weight:
Engine:
Prop diameter and pitch:
Weather conditions and general usage (i.e. snapper fish coz that's where it's at; or gamefish trolling).
Hours on water:
Fuel used:
Trolling speed:
Other notes (such as consumption during trolling speed.).
 
What do others think? Is that too much info - can we cut it down a little?
 
 
 


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Nobody has ever come up with a great idea after a second bottle of water.





Replies:
Posted By: otdrmn
Date Posted: 13 Jan 2008 at 7:11pm
Date: 13/01/08
Boat: (Sam B J) Surtees 6.1m Barcrusher
Size: 6.1
Weight: 1800???
Engine:115hp 2 stroke
Prop diameter and pitch: 18p
Weather conditions and general usage: Flat calm, Game fishing
Hours on water: 7
Fuel used: 118L (bout 166km trip)
Trolling speed: 6k
Other notes:
Bout an hours run out at 24k, then trolling for 5 hours at 6k. 8L per hour at 6k, 35L per hour @ 24k = 118L
If I upped the troll speed to 7 > 7.5k then fuel econ went out the door.


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The 4 R's ~ Rods, Reels, Rifles, Rooting


Posted By: FushnChups
Date Posted: 13 Jan 2008 at 7:59pm
Date: 12/01/08
Boat: (Wizard) Surtees 6.1m Barcrusher hard top Extra
Size: 6.1
Weight: About 1800 KG
Engine: Evinrude Etec 150HP
Prop diameter and pitch: 15.5/17
Weather conditions and general usage: 1 meter swell and some chop, Game fishing
Hours on water: 9
Fuel used: 40.05L
Trolling speed: 6knots or thereabouts
Other notes:
Bout an hours run out at about 20Knots 7 and 3/4 hours trolling and another 15 minutes back from Whale island.


Posted By: Tzer
Date Posted: 13 Jan 2008 at 8:48pm

Date:            12/01/08       

Boat  “TZER” Surtees  Barcrusher Xtra

Size:   6.1

Weight:  approx 1600kg           

Engine:  Mercury 115 4/s                  

Prop diameter and pitch: Mercury Vengence 16P

Weather conditions and general usage. 20-25knots & crappy, trolling.

Hours on water:  9           

Fuel used:  87L

Trolling speed: 7knts

Other notes: 75 miles travelled with about 45mins at 23knts, combined average useage of 1.16L/mile


Posted By: The Gremlin
Date Posted: 13 Jan 2008 at 9:01pm

Date: 12/01/08
Boat: (The Gramlin) Kingfisher 6.3m targa top.
Size: 6.3
Weight: About 1800 KG
Engine: Mercury Optimax 150HP
Prop diameter and pitch: 17 four blade
Weather conditions and general usage: 1 meter swell and some chop, Game fishing
Hours on water: 11
Fuel used: 80.00L
Trolling speed: 6.5 knots or thereabouts
Other notes:
Bout an hours run out at about 25Knots and half hour run back to Manukau bar.


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Nothing else to life but fishing and beer!.


Posted By: craydog
Date Posted: 13 Jan 2008 at 9:28pm

Date: 12/01/08
Boat:Bill Collector
Size: 8m White Pointer
Weight: About 3500-3700
Engine:Mercury Verado 250
Prop diameter and pitch:15p
Weather conditions and general usage: 1 meter swell and some chop,
 Game fishing
Hours on water: 11 hours 124 nm covered
Fuel used: 162litres
Trolling speed: 8 knots or thereabouts
Other notes,trolling fairly quick with boat fully loaded with 4 big guys onboard,i thought that was pretty good economy for nm covered any slower and it was loading up a bit much


Posted By: Obsession
Date Posted: 13 Jan 2008 at 9:30pm

Date: 13/01/08
Boat: Obsession-6m Steadecraft 600 Seville
Size:
6m
Weight: Guessing 1700kg
Engine: Mercury Verado 175HP
Prop diameter and pitch: Not sure prop diameter-19" pitch
Weather conditions and general usage: 1m swell some chop- Game fishing
Hours on water: 8
Fuel used: 83L
Trolling speed: 7.5 knots
Other notes:Includes1 hour run out @ 20-25 knts and 1 1/4 hr run back @ 18 knts


Posted By: Donald Duck
Date Posted: 13 Jan 2008 at 10:38pm
Date: 12/01/08
Boat: The Beagle - KiwiKraft Explorer Hardtop
Size:
  5.9m
Weight: Guessing 1700kg
Engine: Honda 150 4stroke
Prop diameter and pitch: 17p
Weather conditions and general usage: 1m swell some chop - Game fishing
Hours on water: 10.5
Fuel used: 92.6 litres
Trolling speed: 6.5-7.5 knots
Other notes:Includes1 hour running at 20-22 knots


Posted By: [email protected]
Date Posted: 13 Jan 2008 at 11:13pm
Date: 13/01/08
Boat: WETSPOT - 05 Bayliner Trophy 2352WA
Size: 7.3 on waterline
Weight: 2500Kg???
Engine:5.0l MPI Mercrusier
Prop diameter and pitch: 17p
Weather conditions and general usage: Flat calm, Game fishing
Hours on water: 9.5hrs
Fuel used: 220L
Trolling speed: 6.5 - 7.5knts
Other notes:
Still playing around with troll speeds and trim. Questioning flow rates of up to 22.5l/hr today in such calm conditions on the Westcoast after having 14l/hr up at Toots the week before. Feel like crying after reading the previous posts Cry


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http://www.blackbillsportfishing.co.nz/" rel="nofollow">


Posted By: skidder
Date Posted: 14 Jan 2008 at 2:38pm
Date: 13/01/08
Boat: LEXX - Haines Signature 520
Size: 5.2m
Weight: 1500Kg???
Engine:135 Yammie 2 stroke
Prop diameter and pitch: std
Weather conditions and general usage: Flat calm, Game fishing
Hours on water: 8 hrs
Fuel used: 97L
Trolling speed: 7.0 - 7.5knts
Other notes:
At 1600-1800rpm engine runs best without foulling plugs and creates best water....tried engine up but little difference. Also used Red Bull cans as teasers. Noticed largest lure with angled face worked best at all speeds...but under 7 knts all my others with cupped or rounded faces performed poorly. 75 naut miles with 30 @ 23 knts and 45 @ 7 knts ..don't have fuel use gauge but overall ran at around 12ltrs/hr. Fishing results found here:http://www.fishing.net.nz/asp_forums/forum_posts.asp?TID=25920
 


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Knockers - need I say more.....


Posted By: righthook
Date Posted: 15 Jan 2008 at 12:14am
Date: 14/01/08
Boat: Righthook 6.1 surtees hardtop
Size: 6.1
Weight: 1500kg?
Engine: 175hp evinrude etec
Prop diameter and pitch: 17p viper
Weather conditions and general usage: 1.5-mt swells little or no chop
Hours on water: 9.hrs or 65miles
Fuel used: 52lts
Trolling speed: 6.5 - 7.5knts
Other notes: about an hour and a bit travelling time at around 20-25 knots with a few bursts for 5 mins upto 40knts just to see if its propped ok....it was! trimimg motor right out at trolling speed seemed to give better lts per mile motor, seems to use between 0.30 and 0.70 of a litre per mile depending on trim wind swell current etc


Posted By: Tzer
Date Posted: 15 Jan 2008 at 5:52am
Sorry to interupt this thread which I think going to be very interesting.
 
Dean have you changed your motor from Suzuki to an E-Tec??


Posted By: wetdream
Date Posted: 15 Jan 2008 at 9:46am
Jeeze Wetspot at $385 in gas alone for a days fishing your'd wana put a few in the coffin would'nt ya or get some rich matesCry.
 
as Tzer said.......suzuki for E-tec????


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Posted By: [email protected]
Date Posted: 15 Jan 2008 at 10:43am
Just a glitch I believe.  Will sort it outn with the advice Im getting , but hey, All my booze money goes into fuel these days so Im  onto a winner anyway :)

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Posted By: The Gremlin
Date Posted: 15 Jan 2008 at 10:51am
To true there Lance. All my smoke money goes that way now.

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Nothing else to life but fishing and beer!.


Posted By: Donald Duck
Date Posted: 15 Jan 2008 at 11:26am
Date: 15/01/08
Boat: The Beagle - KiwiKraft Explorer Hardtop
Size:
  5.9m
Weight: Guessing 1700kg
Engine: Honda 150 4stroke
Prop diameter and pitch: 17p
Weather conditions and general usage: Unknown
Hours on water: Zero
Fuel used: Zero
Trolling speed: 0 knots
Other notes: Working/crying.

On a more serious note:
I was talking to another Honda 150 4-stroke owner who's engine has done fifty hours more than mine (275 vs 225). I told him about my consumption (or lack thereof) on Saturday and he swears that his motor is using less fuel the more use it has. I think  he's right. Would this be because things are "bedding in" better and the engine isn't working so hard for the same revs?


Posted By: righthook
Date Posted: 15 Jan 2008 at 2:18pm
Hey TZer,  yup traded the suzi,  to be blunt I didnt like the thing that much due to a few niggles id had with it, especially after a weekend trip to the barrier with three of us on the boat and a load of gear it was always dragging its ass badly and the torque or lack of it loaded up meant the fuel bill was pretty high, dont get me wrong it was great for a 4 stroke, but after living with it for a while I have just decided that after already owning an etec before id rather have one than a 4S, i think that with my plans to keep this rig for a very long time that if a 4 stroke goes wrong after the warranty runs out  it would be outside my means or skill to repair it, also now the thing is on the plane at a lot lower speeds (more torque 50kg lighter) its got a lot more grunt it doesnt drag its ass and rides even better and its miles quieter and quicker, according to the same fuel comp i had when the suzuki was on her its better on fuel by a long way especially at trolling speed than the suzuki even with an extra 25hp,  yea i have to buy oil but a $500 service a year buys me a lot of oil!!


Posted By: NZTurtle
Date Posted: 15 Jan 2008 at 5:44pm
RH,
$500 per year service. Holy cow, where are you getting that done? Is this 2 50 hours services per year?
Cheers
T
p.s. That was you lurking in Peach Cove on Saturday?


Posted By: righthook
Date Posted: 16 Jan 2008 at 12:19am
Hey turtle was that you in the surtees cuddy in  peach cove??   fishing was hard, how you get on? we were going for a game fish but turned round outside tuts as it was a lot rougher than the forcast and lauched at paura instead.....on the suzi my first service was $500,  didnt think it had to be serviced every 50?  does it?


Posted By: bustedoff
Date Posted: 16 Jan 2008 at 8:02am
Looks like the fuel economy winner is the ETEC?
A mate has imported some Navman fuel flow meters from the States for some jet boating mates, 1/2 price compared to locally including freight (usual story) and they were manufactured in NZ...
I'm keen to get one and fit it to the Buccaneer... fuel economy with the 115 Johnny is not as good as it could be (about 30L/hr). I figure that with the fuel flow meter I should be able to set the trim and rpm up for best economy vs. speed?


Posted By: sarge
Date Posted: 16 Jan 2008 at 1:11pm
Just had 20 hr service on 150 suzuki, cost $394 all up.  I think service sched is once a year or every 100 hr, what ever is first.


Posted By: Men In Black
Date Posted: 17 Jan 2008 at 1:17pm
Date: 17/01/08
Boat: (Men In Black) Surtees 6.1m Workmate Special Custom
Size: 6.1
Weight: About 1700 KG
Engine: Suzuki DF150HP
Prop diameter and pitch: 15x21p
Weather conditions and general usage: .5 meter swell and some chop, Cruising and general softbait fishing.
Hours on water: 12
Fuel used: 94ltrs
Trolling speed: 6knots or thereabouts
Other notes: Launched Kawakawa Bay x3 adults on board, cruised up to Port Jackson @25knts (1.5hrs) motored around to Square Top, then to Channel Is, back to Square Top and onto Fletchers Bay then and out towards the Merc's, back to Kawakawa, total engine hours 6.2 averaged 15.16ltrs/hr top speed was 30knts average speed for the day was 24.7knts, not much slow speed stuff... and heaps of fish


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www.synit.co.nz


Posted By: Joker
Date Posted: 21 Jan 2008 at 12:34pm
With the price of gas it looks like it should be a "Return of the trolling auxilliary"
 
My 5hp gets my 5.35m up to hull speed of around 6mph and burns bugger all fuel when compared with these huge outboards.
 
Given that 2,000 hours is considered the useful life of an outboard - these guys are depreciating their expensive main motors big time by using them to troll. 


Posted By: skidder
Date Posted: 21 Jan 2008 at 1:28pm
Good point Joker but if you hook a blue and need to chase ...that 5hp might not do the jobLOL     need to restart the big toy and having just another thing to do in the resulting panic might mean a lost fish.Embarrassed

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Knockers - need I say more.....


Posted By: El_Robbo
Date Posted: 24 Jan 2008 at 7:10am
I would like to see your 5hp push the nose of my 6.35 Billfisher through the eye of the wind and hold you straight in a swell.  My 5hp used to struggle with my 550 mclay... and was only useful at live bait speeds, in calm water, where yes I don't think I even refilled my 10L fuel can in a year of mucking around.  It is now wrapped up in the garage...


Posted By: [email protected]
Date Posted: 25 Jan 2008 at 9:49pm

Wetspot got down to 13l/hr at best yesterday trolling between 4.5-5.5knts on the esat coast. in brisk conditions and a 2.5m swell. Will be interesting to see if I can get this down further in easier seas :)  Bit of a saving over the max of 25l/hr the week before of the manukau in smooth to slight seas.

Will report back after further recon and experimentation


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http://www.blackbillsportfishing.co.nz/" rel="nofollow">


Posted By: Tzer
Date Posted: 26 Jan 2008 at 12:25pm

Date: 25/1/2008

Boat: Surtees Barcrusher Xtra        

Size: 6.1

Weight: approx 1600kg

Engine: 115 4/s Mercury

Prop diameter and pitch: 17P

Weather conditions: 2-3m NE swell, light winds.

 Hours on water: 11hrs

Fuel used: 77L for 63 miles travelled.

Trolling speed: 7knts

Other notes . Bottom fished for few hours then trolling rest of day. Averaged 1.2L per mile

 

 

Date: 26/1/2008

Boat: Surtees Barcrusher Xtra          

Size: 6.1

Weight: approx 1600kg

Engine: 115 4/s Mercury

Prop diameter and pitch: 17P

Weather conditions: 2-3m NE swell, 20knts southeast . Not very good conditions.

Hours on water: 3

Fuel used: 12L for 9.5 miles travelled.

Running speed: 23knts

Other notes . Ran to area and fished for few hours then run back to ramp. 1.2L per mile

 



Posted By: [email protected]
Date Posted: 28 Jan 2008 at 10:00pm
Wetspot Update - Its just getting better and better
 
Date: 27/01/08
Boat: WETSPOT - 05 Bayliner Trophy 2352WA
Size: 7.3 on waterline
Weight: 2900kg about
Engine:5.0l MPI Mercrusier
Prop diameter and pitch: 17p
Weather conditions and general usage: Westcoast- 15-20knts 2mswell rising from SW
Hours on water: 9hrs
Fuel used: 169L
Trolling speed: 5.5 - 7.5knts
Other notes:
Still playing around with troll speeds and trim.Whereas I had anything up to 25l/hr in weeks gone by,  seem to be averaging around 13-14 l/hr at troll speed at moment and even got down to 10.5 at times in following sea and 11-12 punching back into that rising swell from the SW.  Al because of listning to advice on this forum which is awesome :)   :)


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http://www.blackbillsportfishing.co.nz/" rel="nofollow">


Posted By: floater
Date Posted: 01 Feb 2008 at 4:11pm
interesting thread, i hope to contribute once i get my fuel computer in.
 


Posted By: Men In Black
Date Posted: 02 Feb 2008 at 10:09pm
Got my best evfer economy out of the Suzuki DF150 today. Took Tiny(190kg) myself and John Moran plus a full boat of gear over to Port Jackson from Kawakawa Bay, went right round to Square Top and Little Stony Bay then back to Fantail and over to Hooks Bay and back home. Put 5.2hrs on the motor most travelling around 4100rpm (25knts) and used 73ltrs. Thats just over 14ltrs/hr of motoring.... must have been down hill because thats pretty good out of a 3ltr motor.

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www.synit.co.nz


Posted By: batfastard
Date Posted: 04 Feb 2008 at 7:53am
we left whangaroa pulled plastic for 10 hrs down past the nine pin trench back to the cavalleys,then 8hrs on sun .on sat we spent most of the day punching into it .we used 296 ltrs was happy with that runnig 2x 200hp out boards on a 10 m boat

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As my wife catches bigger fish than me, does that make me a bad fisherman or a great skipper.......


Posted By: couda
Date Posted: 06 Feb 2008 at 7:03pm
Just got a 100hr service on a 2003 130hp yammy 2 stroke.
New plugs, impellor, filters etc $357 incl GST.
Fair price I thought.
 


Posted By: Men In Black
Date Posted: 06 Feb 2008 at 9:29pm
That's a dam good price couda, did it include labour... if it did that's outstanding

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www.synit.co.nz


Posted By: couda
Date Posted: 06 Feb 2008 at 10:17pm
MIB,
 
Owner operator who did his apprenticeship with the local dealership, and then went overseas and worked on superyachts. Came back to Napier and setup shop. $48 hr labour x 3.25hrs. Has 3 months forward work.


Posted By: wetdream
Date Posted: 07 Feb 2008 at 2:37pm
Date: 2/2/08
Boat: WetDream
Size: SF 650 Haines Hunter
Weight: 2000kg about
Engine: 200 Yammi 4/s
Prop diameter and pitch: 19?
Weather conditions and general usage: Westcoast- pretty good 1m plus winds 5-10
Hours on water: 12.5hrs
Fuel used: 151L
Trolling speed: 7knts 1800rpm
Other notes:
At trolling speed we avarage 7-9lph and most the fuel was burnt getting out to the 70mtr mark and coming back tru the bar with a little 40kn+ in the harbour.


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Like us on: facebook/stanleysigns.com


Posted By: nzbwana
Date Posted: 09 Feb 2008 at 12:21pm
Yo Men in Black......are you smoking those soft plastics ???? No way your getting that fuel consumption at 4100rpm, check your figures! Mindyou like most soft rubber exponents I guess your prone to exaggeration

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MOLON LABE


Posted By: ian
Date Posted: 10 Feb 2008 at 4:37pm
Date:9th feb
Boat: AMF prosport 190
Size:
Weight: unsure, about 600kg for hull plus motor 135kg, plus 300-400kg of anglers, gear, bait, gas! so maybe 1300kg tops
Engine: Johnson 115 oceanpro year 2000
Prop diameter and pitch: not sure sorry!
Weather conditions and general usage (i.e. snapper fish coz that's where it's at; or gamefish trolling). was calm but chopped up later. figures are on the calm bit
have a navman fuel flow sensor plugged into GPS so get accurate economy
flow 21L/hr at 3800 rpm at 21.5kn so 1nm/L. we used 30L from sandspit to fiarchild to takatu and home.
as an aside I found this formula showing prop efficiency, it calculates teh theoretical speed with 100% efficiency so calculte this and work out actual speed as a percentage of this, I think over 80% is the target.
RPM x pitch/final drive ratio


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drink up stream of the herd


Posted By: Barfly
Date Posted: 10 Feb 2008 at 9:06pm
Have just installed a fuel flow sensor on my 90Hp yammy (Yes folks, the EP60's have just arrived in at the importers).  Had my first outing yesterday (Saturday, on the Ytamata) so the readings are a bit inconclusive - having to dodge around yaughts etc, get out of the way of ferries etc. (bloody hell, those things mooooove!)
  Back to the fuel sensor.. it worked, but its a mailto:p@@@off - p@@@off having to install an extra switch to stop the NMEA units draining the battery. And, configuring the plotter to show the details of what it can tell you (the manuals do NOT tell all - had to search the internet for answers...
Anyway, heres some interim figures...
  Surtees 5.5 workmate, 3 POB, 1 scrawny (me), 2 largish mates, 105L fuel in 2 tanks, usual chilly bin of ice, beer, hot water for the wimpish captain for his coffee.
  Speeds Apart from departing the OBC and getting out into the real Ogin, mostly 3,300RPM, giving 21 knots. Had to slow down a bit(!) as we threaded through the wall to wall boats in the Motuhi channel where we sat for an hour or so flinging bait into the wild blue yonder for miserable returns (lots boated, but all consigned back to the deep). 
  After lotsa discussion, off to Rakino, and fish just off the Awash rock on the south side. Up the pick after 1/2 an hour, fish off another sunken rock or 2 on the western side, move to the North side and waste more bait and  another hour, then back to exactly where we started in the Motuhi Channel, and started catching some reasonable fish (well, keepers anyway). Then back to the OBC in the late afternoon.
  Total fuel used.. 40L, at 3,300rpm the fuel sensor said we were using 21L per hour
  As I'm new to this boat, and the fuel sensor is definately new to me, I look forward to using it on the less busy Manukau, where I should be able to take better notes of the the figures. (I wont go into the fish sizes on this forum !).  There was a difference -slight - when returning home due to the chop on the harbour - I actually believe the economy increased.
  I'll try and confirm this later..
More notes...  If there are others trying to set up the EP60 fuel sensor unit with the Lowrance LMS 334 or 339 that have probs, let me know - I've finally cracked how to set up the custom guages etc - theres nothing in the manuals....
Cheers, get some lines in the water...


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I got a boat for the wife.
Now THAT was a deal !!!


Posted By: El_Robbo
Date Posted: 12 Feb 2008 at 9:25pm
Date: Late Jan
Boat: (Too Easy 2) Buccaneer Billfisher 635
Size: 6.35
Weight: About 2000 KG
Engine: Yamaha F225 (2001)
Prop diameter and pitch: 21m
Weather conditions and general usage: Smooth to Slight
Hours on water: 10 approx 160 km in a day in and back
Fuel used: 95ltrs
Trolling speed: 6.5 knots 1700rpm trolling speed
Other notes: Out from Opito Bay 7am fished thru back of Nine Pin trench and thereabouts.  Trolled all day but spent an hour diddling with a school of mahis under a buoy.

Avg overall 9.5L per hour including run out to near 200m mark.


Posted By: El_Robbo
Date Posted: 12 Feb 2008 at 9:29pm
Date: Late Jan
Boat: (Too Easy 2) Buccaneer Billfisher 635
Size: 6.35
Weight: About 2000 KG
Engine: Yamaha F225 (2001)
Prop diameter and pitch: 21m
Weather conditions and general usage: Slight to Moderate (15kn)
Hours on water: 10 approx 160 km in a day in and back
Fuel used: 130ltrs
Trolling speed: 5.5 - 6.5 knots 1700rpm trolling speed
Other notes: Out from Opito Bay across to Russell to pick up Josh then on out to the trench.  Trolled back into the 100m where we dropped a small stripe.

Avg overall 13L per hour including run out to near 100m mark.  Dramatic impact of adding 1 extra to the boat (it was Josh so not even a heavy one).  But most importantly punching into seas and a high revs tabs down run in and back.  And a short dash KK inlet to Russel (est 15L return).

Some lessons learnt 20-30% more fuel in heavier conditions for almost the same time and run.


Posted By: El_Robbo
Date Posted: 12 Feb 2008 at 9:38pm
As you can see from my two reports my consumption has dropped dramatically from my December fishing.  Where we were chopping through 150 - 170 L per day in slight to moderate conditions.  I estimate a saving somewhere between 30% - 40% from cutting back my speed from 7 - 7.5 knots at 2100 rpm to 6ish at 1700 rpm.  After an hour or two it doesnt even seem slow.

In six days fishing spent three hours on a blue, dropped two other stripes and caught three mahi.  Which apart from actually boating the marlin is almost as good as the stats from last year.  Change in boat a big factor but speed I don't think makes a difference.

Thanks Peter P / Roddy I am truly a convert of the 6kn will mean 4 days fishing for the price of 3 which is good news when your mates don't know the meaning of the words "fuel contribution".

PS just got 100hr service on the F225 (now at 640hrs) for $520 impellor, oils, filters, hyd steering check.  Nothing else wrong.  Very happy with that. 

If you are in Auckland and out of warranty I suggest you contact Mark Helms Marine.  I have always been very happy with his work.  He serviced the old Mercury 5 times and I will def be getting him to keep on with the new yammy.  It is never too hard.  He travels and always delivers on time.  If you look after him he will also bend over backwards to get you turned around and back out fishing during the season.  When buying the boat he was always just a phone call away to answer questions about the motor.  In short a top fellow.


Posted By: plastic
Date Posted: 13 Feb 2008 at 8:04pm
I have a Surtees workmate with the new fuel injected Honda 90 four stroke. I always get around 10 to 12 litres per hour at 4000 rpm traveling at 24 mph. This seems to be a sweet spot and very economical, increase revs to 4500 and the consumption doubles however covering a lot more ground. I get th e same pulling a skier as well.


Posted By: Blue Asparagus
Date Posted: 13 Feb 2008 at 8:25pm
Date: 9th to 12 March
Boat: Ultimate Game
Size: 38ft
Weight: 7 ton
Engine: 220Ford Turbo
Prop diameter and pitch: big lol
Weather conditions and general usage crap weather averaged 12hr days
Fuel used: 4 days 415lt
Trolling speed: 7.5
Other notes worked out at $45 a day for the 3 crew each not to bad at all.


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Ultimate GAME Fishing Adventures. Northland



Posted By: [email protected]
Date Posted: 13 Feb 2008 at 10:39pm
Cry, maybe one day I can have fuel consuption like that :)

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Posted By: MJ
Date Posted: 14 Feb 2008 at 8:57pm
What are you running Wetspot?


Posted By: Tzer
Date Posted: 14 Feb 2008 at 10:00pm

Date: 14/2/2008

Boat: Surtees           

Size: 6.1

Weight: approx 1600kg

Engine: 115 4/s Mercury

Prop diameter and pitch: 17P

Weather conditions: Northerly 10kts rising to 20knts

 Hours on water: 10.5hrs

Fuel used: 89L for 77 miles travelled.

Trolling speed: averaged 7knts

Other notes. Trolled all day with about 16miles at cruising speed 23knts. Averaged 1.15L per mile



Posted By: BLACK BETTY
Date Posted: 18 Feb 2008 at 12:27pm
Date:16.02.08
Boat:ramco fishmaster
Size:19ft
Weight:900kg plus
Engine:90hp johnson 4stroke
Prop diameter and pitch:14-1/4x22
Weather northerly 10knts variable pushing in to swell most of day
Hours on water:11 hours
Fuel used:88litres
Trolling speed:6-7 knots
Other notes 1 and a half hours @ 4000rpm rest at 2300rp-6-7 knots
traveled from gisborne to edge of tolaga total of 162km

Date:17.02.08
Boat:ramco fishmaser
Size:19ft
Weight:900 plus
Engine:90 4 stroke jonny
Prop diameter and pitch:14-1/4 22
Weather conditions south west 10 knots easing.
Hours on water:8 hours
Fuel used:58litres-130 kilometres
Trolling speed:6-knots
Other notes hour at 4000rpm and the rest at 6 to 7 knots trolling








Posted By: skidder
Date Posted: 18 Feb 2008 at 3:57pm
I hope Mushroom11 you caught fish for 19hours on the water ???

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Knockers - need I say more.....


Posted By: Miss Lidgard
Date Posted: 18 Feb 2008 at 4:36pm
Date: 1-2-08
Boat: 4.3m Stabi
Weight: 350kg
Engine: Honda 50hp
Weather conditions and general usage: slight chop with 1m swell. Trolling + 20mins each way @ 22knots / 4500rpm. 1 POB
Hours on water: 6, out from whangamata, around aldermans and back
Fuel used: 18 litres for 38nm travelled
Trolling speed: 6-8knots


Date: 9-2-08
Boat: 4.3m Stabi
Weight: 350kg
Engine: Honda 50hp
Weather conditions and general usage: trolling + 15mins each way @ 25knots / 5000rpm
Hours on water: 6, out from whangamata, to mayor and back
Fuel used: 26 litres for 51nm travelled
Trolling speed: 6ish knots
Other notes: 1.5m swell, variable sea. 1 POB


Posted By: BLACK BETTY
Date Posted: 19 Feb 2008 at 12:35pm
na mate nuthnk big but was a sad last 2days for most anglers in the comp.only 1 marlin landed  think???and no yellows


Posted By: burwood
Date Posted: 26 Feb 2008 at 4:18pm

Trolling at 7.5 knots Im getting about 12LPH from twin 175s-not bad

Pretty linear consumption up to 5000 rpm. 1.8NM per litre overall id say. So downtown to Fitzroy is about 90litres if i take it easy


Posted By: Tzer
Date Posted: 26 Feb 2008 at 7:41pm
Originally posted by mushroom11 mushroom11 wrote:

Date:16.02.08
Boat:ramco fishmaster
Size:19ft
Weight:900kg plus
Engine:90hp johnson 4stroke
Prop diameter and pitch:14-1/4x22
Weather northerly 10knts variable pushing in to swell most of day
Hours on water:11 hours
Fuel used:88litres
Trolling speed:6-7 knots
Other notes 1 and a half hours @ 4000rpm rest at 2300rp-6-7 knots
traveled from gisborne to edge of tolaga total of 162km
 
Pretty good figures there, we did the same day out to the Tolaga reef round trip of 99miles for 115 L used, 2hrs at 4800rpm rest trolling at 2800rpm 7-8knts. Weather was great out there light winds but wasnt good conditions coming home from out there 25knts west south westerlies, make me appreciate the boat I have. Didnt see many other 6m boats out there, what boat were you on. Lost one good fish when line broke, had 70+kg yellowfin jumping out of water right beside the boat.


Posted By: BLACK BETTY
Date Posted: 29 Feb 2008 at 7:55pm
na yea didnt quiet make it to tolaga reef bit worried about amount of gas left but we trolled right from dogs leg right up to tolaga covered most squares on refrence map and went as far as start of needham contracting.saw a bit of action on the water but not much decent.good day but hit the rough stuff you were talking about around the outer gables.black bettys the boat name we were the boat that was at the ramp early sunday morning when you were launching


Posted By: salacia
Date Posted: 01 Mar 2008 at 11:36am

Date: 20/02/2008

Boat: Bluefin 7.7 hartop ( Salacia )         

Size: 7.7

Weight: approx 2600kg

Engine: Honda 225 Four stroke

Prop diameter and pitch: i think 19

Weather conditions: Northeast  15kts rising to 20knts, 1-1.5 metre swell

 Hours on water: 12.5

Fuel used: 95.6

Trolling speed: around 8-9 knots depending on lures

Other notes. Ran out to kingfish pins for some jigging ..took about a 3/4 running at 20-22 knots, trolled for most of the day then back into the kingfish pins again and ran home at 20-22 knots for just over half an hour...love the motor and very cheap to run...so far in two season two striped marlin boated and another two raised along with lots of kingfish and snapper


Posted By: Sea-Sharpe
Date Posted: 02 Mar 2008 at 10:45am
Date: 02-03-08
Boat: 5m Mclay Sportsman
Weight: 512kg Hull and Motor 
Engine: Yamah 60HP Four Stroke
Weather conditions and general usage: Getting from A to B - on idle a lot whilst throwing soft plastics around various spots. Fuel used: 16.5 litres for 32nm travelled ? I take it thats okay consumption?

Other notes: Calm Conditions. 1 POB


Posted By: [email protected]
Date Posted: 27 Mar 2008 at 1:28pm
latest Wetspot update which is slowly making for happier reading.
 
4 days trolling up at Tuts the average consumption was between 9l-11.5l/hr at 6-7knts excluding high speed getting to or getting from areas. Interesting that when I got down to 4.5knts to slow troll a skip bait and two old blues I was using 5-6l/hr.
 
Average day worked out to 114ltrs for 10 hrs engine time including getting to and from at say 17-20knts
 
getting very happy with that.
 
 


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Posted By: Bender
Date Posted: 27 Mar 2008 at 2:03pm
Figures from a day's gamefishing at Tutes.
 
Boat "Bender" Ramco 620 Sportfish
Weight 1900kg (includes trailer, not sure what the boat alone weighs)
Engine Yamaha F150, 19 inch standard propeller
 
Weather conditions: Lumpy 1m swell in moring, wind 8 - 10 knots. Wind dropping out early afternoon.
 
2000rpm ... 6.5 - 7 knots. 7.3 litres per hour.
 
2200rpm 7- 9 knots. 7.6lph
 
2300rmp 8 - 9 knots, 9.1 lph
 
Cruising at 4000 rpm, 23 knots, 23.7 lph.
 
Total days fuel used leaving dock 9am and returning 6- 6.30pm, 85.4 litres.
 


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Nobody has ever come up with a great idea after a second bottle of water.




Posted By: Dougie
Date Posted: 31 Mar 2008 at 5:59pm
This is my rig, about 5 metre cat with custom hardtop. (If any one recognizes the hull please tell me who made it! Tauranga I believe)
Anyway, fuel.
Twin 2 stroke Johnson 70's (97-old school)
Prop 14 1/4 x 17pitch cupped
 
6knts - about 8-10 l/h
8knts - about 15l/h !!! At trauling speed one motor or two seems to use the same amount of fuel.
 
4000rpm about 19knts, 26 l/h = approx 0.72Nm/l
5500rpm about 28knts, 40l/h = approx 0.7Nm/l      (She's thirsty!)
 
At 6000rpm economy goes out the window as expected!
 
I think if this rig had twin 90's on it, and taller props so cruise speed was 1000rpm less economy would be better than current! Any thoughts anyone?


Posted By: The Jester
Date Posted: 03 May 2008 at 5:57pm
Groper Fishing at Stephens Is
Date:23-26 April 08
Boat: 'Marooned'  Fryan 580x Pursuit
Size:19ft
Weight:aprox 800kg plus
Engine:115hp Honda 4 stroke
Prop diameter and pitch: Dunno sorry
Weather: 10knts Variable Rising to 15knts then about 20Knts NE
Hours on water: 4 Days (3 nights slept on boat)
Fuel used:110 litres
Total Running Hours:12 exactly
Trolling speed: Little bit for Kahawai n Barracouda at 4Knts
Other notes: Bash out to the Grouper holes in 2m swell (according to the weather
station on Stephens Is).

Navman Fuel Computer Says most Efficient Cruise Speed:
3800rpm  21Knts in Flat Sea With Motor Trimed up and load of 2 people + overnight gear 
for 3 nights + 140ltr Fuel = Uses 16l/h or 0.8l/Nm
With Same load in a 2mtr Swell:
3800rpm  17Knts = Uses 16l/h 0.95l/Nm


Posted By: The Jester
Date Posted: 03 May 2008 at 6:18pm
Oops!!! I meant Grouper Fishing at Stephens Is


Posted By: zepmac
Date Posted: 12 May 2008 at 9:57pm
Date:10/5/2008
Size: 6.7m
Boat: Coastal Xplorer
Name: GreyFin
Weight:1900?
Engine: D3 Volvo 160Hp Diesel
Prop: Duo Prop 17"?
From TeAtatu to David Rocks area to drift about, 4 Men with gear 150L fuel Auckland harbour washing machine with Power Boat racing inner harbour, Down past Emu Point, 24Kn 2.3hr,12Kn1 hr approx.
Weather: SE20 Gusting 30 1.5m
 
Hours on water: 6.5 .
Engine run time 3.3Hrs
Fuel used 47.7l
8Kn 5.6L/hr 1800rpm
20Kn  19.6L/hr 3000rpm
Avg Fuel readout:13.1L/hr


Posted By: Rotowarriors
Date Posted: 08 Jan 2009 at 8:30pm
How bout we give this a bump for the new game season, better late than never ayeBig%20smile, if I ever get out for a fish I'll postDisapprove


Posted By: A C
Date Posted: 17 Jan 2009 at 6:26pm
OK here goes - 17/01/09
 
"Rainmaker" Predator 610 alluminium hull and top - 6.7m LOA
Suzuki 175 DF 4/s - not yet run in.
21" 3 blade prop.
 
23knts @ 4000rpm = 19 - 20.5 litres per hour
6.9 - 7.8knts tolling speed 7.2 - 8.6 liters per hour.
 
Hit the crappy stuff - 15 WNW on the nose with opposing tide up the motuhiu channel - 19 knts @ 3800rpm = 19 litres per hour.
 
Less than half fuel useage of the old Merc 150 EFI at cruising speed and only 25 -30% fuel useage at trolling speed.
 
60 miles including messing around = 50 litres.
 
It can only get better as it free's up..
 
The little extra weight made the boat a different animal, it seems a tad bow up at cruise but once we hit 30 knts it seemed to settle.  
 
Nice - I like - hi fives
 
 


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Aye-Aye cloth eyes.


Posted By: biggear
Date Posted: 20 Jan 2009 at 7:55am
20/01/09
 
"Kings Ransom" Fyran 7.6m aluminium hull and glass hardtop
Evinrude Etec 200hp 2009 Model
# blade prop
 
24knts @ 4000rpm = 36ltrs per hr
6.5 - 7.5knts trolling = 6.8 - 9.6 ltrs per hour (depending on sea conditions)
 
Did a full day trolling last week with four on board for 12 hrs on the water and usage was 86 ltrs.
 
Not sure of miles travelled but somewhere around 80.
 
Pretty good for a two stroke on a big trailer boat. I am happy with it.


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Dont let the grey hair fool you!


Posted By: mozz
Date Posted: 21 Jan 2009 at 2:44pm
friday 16th Jan

Kingtin 5.5m marco hardtop yammie 115 4stk
bay of islands 5-15knots out wide
13 hours on the water
             11hrs trolling
              1 hour travelling
               1 hr snapper fishing
                 100miles travelled+
trolling @ 6.5-8knots used 5.8-8.5lph
travelling @23 knots at 4200 used 19lph
total fuel burn for the day was 91.4l on the fuel computer


Posted By: [email protected]
Date Posted: 21 Jan 2009 at 3:12pm
Thas just plain disgusting Cry

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Posted By: Tagit
Date Posted: 21 Jan 2009 at 3:37pm
Biggear - are you sure about your fuel burn figures? Your 4000rpm cruise is probably 7 - 9 lph higher than the same size 4 strokes that I know of, and I don't think that the ETEC is really meant to be that much more thirsty. Even our old Yamaha 200 2 strokes are only ~40lph at 4000rpm. I have observed from a number of different boating forums that ETEC owners sometimes need to play with their props a bit more than most to get the best economy out of their engine. If you are sure of your fuel figures I would try and find someone who could advise on propping ETEC's for best allround economy vs performance. A search on the internet public forums might give you some ideas on what fuel burn you should get and maybe even some ideas about props.
 
Originally posted by biggear biggear wrote:

20/01/09
 
"Kings Ransom" Fyran 7.6m aluminium hull and glass hardtop
Evinrude Etec 200hp 2009 Model
# blade prop
 
24knts @ 4000rpm = 36ltrs per hr
6.5 - 7.5knts trolling = 6.8 - 9.6 ltrs per hour (depending on sea conditions)
 
Did a full day trolling last week with four on board for 12 hrs on the water and usage was 86 ltrs.
 
Not sure of miles travelled but somewhere around 80.
 
Pretty good for a two stroke on a big trailer boat. I am happy with it.


Posted By: stef da maori
Date Posted: 21 Jan 2009 at 8:05pm
I have an E-tec 150, pushing  a 6.1surtees gamefisher. 24knts is usualy about 28 to 30litres trimmed up properly.

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Tama tu, tama ora. Tama moe, tama mate.Maranga mai, me hiika tatou i nga wa katoa.


Posted By: Tagit
Date Posted: 22 Jan 2009 at 6:47am
What rpm's? If that is the normal 4000rpm cruise your fuel burn is the nearly same as a old fashioned Yamaha 150hp 2 stroke. An average 4 stroke would be around 22 - 23lph at 4000rpm if correctly propped. I don't know the Etecs, but I have heard that they can be a bit trickier than most 4 strokes to get set up for best economy. The last couple of posts seem to confirm that as the owners appear to be getting poor economy compared to the 4 strokes that the Etec is meant to be as efficient as.


Posted By: biggear
Date Posted: 22 Jan 2009 at 8:07am
I'll have to check again today. Its a big boat, and we usually have 4-5 people on board so that would make a difference I guess. I'll have a play today and see what we come up with.

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Dont let the grey hair fool you!


Posted By: Tagit
Date Posted: 22 Jan 2009 at 8:28am
Biggear - If the boat is propped correctly (which the cruise speed would seem to indicate it is) then the size of the boat should make very little difference. The engine is designed to optimally produce a certain amount of HP and burn a certain amount of fuel at certain rpm's. There is a bit of a range, so the figures can vary a bit, but not usually hugely. Bigger boats just get smaller props so that they will go slower for the same HP than a smaller boat with a larger prop will.
Loading will however make a difference as the boat may well be carrying 'too much prop' if you set it up for a light load but are in fact carrying a heavy load when you check the figures.
For some reason Etec's seem to be 'prop sensitive" and I know some owners have tried several different brands before finding the one that gives them the economy they expected. There is another thread running at the moment about a 60hp Etec and on that thread there is a link to an Etec owners site. I haven't checked it out, but it might be worth having a look for ideas if your economy is not what it should be.


Posted By: rodg
Date Posted: 22 Jan 2009 at 12:13pm
Hi all, I have just put a 115 Yamaha 4 stroke on the back of our fyran 580 and we are using between 13 and 16 ltrs per hour @ 4000 rpm,  averaging 20 knots.   First time trolling with this motor the other day and I was using 5.5 - 6.5 lts per hour  @  around 7 knots.


Posted By: A C
Date Posted: 25 Jan 2009 at 9:41am
Originally posted by A C A C wrote:

OK here goes - 17/01/09
 
"Rainmaker" Predator 610 alluminium hull and top - 6.7m LOA
Suzuki 175 DF 4/s - not yet run in.
21" 3 blade prop.
 
23knts @ 4000rpm = 19 - 20.5 litres per hour
6.9 - 7.8knts tolling speed 7.2 - 8.6 liters per hour.
 
Hit the crappy stuff - 15 WNW on the nose with opposing tide up the motuhiu channel - 19 knts @ 3800rpm = 19 litres per hour.
 
Less than half fuel useage of the old Merc 150 EFI at cruising speed and only 25 -30% fuel useage at trolling speed.
 
60 miles including messing around = 50 litres.
 
It can only get better as it free's up..
 
The little extra weight made the boat a different animal, it seems a tad bow up at cruise but once we hit 30 knts it seemed to settle.  
 
Nice - I like - hi fives
 
 
 
Yesterday flat calm - Okahu bay/Port Jackson/back of Tiri/Okahu bay -  75 miles / 66 litres. Thumbs%20Up


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Aye-Aye cloth eyes.


Posted By: kaveman
Date Posted: 25 Jan 2009 at 1:27pm
Originally posted by WETSPOT WETSPOT wrote:

Thas just plain disgusting Cry


Lance.....You willl hate this thenLOLLOL

7.6m AMF..  200hp Volvo deisel with Duo prop(approx 3.5 tonne fully loaded)
2hrs @ 3000revs(out and back)24-25knots
9 hrs trolling at 1600revs = 7-7.5knots
Sea flat as early but 1.5m northerly chop beam on for trip home(still 20+ knots)
Total fuel burn 65lts @ $1.05lt = $68.25 ( total travel approx 115nm)


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www.kavemantackle.co.nz


Posted By: Rotowarriors
Date Posted: 25 Jan 2009 at 10:54pm
Date:25/1/2009
Boat: 580 Ramco Fishmaster
Weight:Tonne? give or take
Engine: 90hp ETEC
Weather: SW20knots Choppy asAngry
 
Hours on water: 7
1 hr full tilt, rest trolling, bout 6 knots
Fuel used 32.9lBig%20smile
Avg Fuel readout:5.6L/hr
travelled bout 60-70 clicks, dunno exact gps playing upDisapprove, out to the 70m mark out Rags before coming back in due to the windAngry


Posted By: floater
Date Posted: 26 Jan 2009 at 11:36am

7.2 loa alloy h/t pontoon, 2000 150yam sw. 19" prop

2-3 pob cruise 4k rpm at 50kmh for 1.2 l/km = 42 lph.
 
 


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out of here


Posted By: stef da maori
Date Posted: 27 Jan 2009 at 11:50am
Tagit. Had a proper play with it over the weekend. 3600rpms gave 24.5knts at 26l/hr.
Am trolling at 1850 rpms to give 6.5knts at 6.8l/hr.
I'm pretty happy with the economy. Like anything new, you have to play around to get to know their economy areas. I just have to learn that the Arabs have got enough money and that the full on the throttle doesn't have to be used


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Tama tu, tama ora. Tama moe, tama mate.Maranga mai, me hiika tatou i nga wa katoa.


Posted By: biggear
Date Posted: 28 Jan 2009 at 7:55am
At 3900rpm we got 22knts at 30ltrs per hour and trolled at 7-7.5knts for 7.8lts per hour. Sea was very calm. Fullday of 12hrs for 96ltrs. Its not too bad.

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Dont let the grey hair fool you!


Posted By: Bounty Hunter
Date Posted: 30 Jan 2009 at 11:01am

yesterday went from aucklands OBC to the Noises - Aha's - Noises - OBC on 13litres of fuel.

boat - stabi 459

motor - yamaha F40

load - light - one up and only dive gear

conditions - very calm

worked out it is a 31Nm round trip and i was cruising at 21kts - fuel flow only 0.4l/Nm Smile



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No disintegrations!


Posted By: KaiRuku
Date Posted: 12 Feb 2009 at 12:21pm

1998 530 Stabicraft

1998 115Yam 2-Stroke,
19inchSS Yam prop,
Fast cruise in the calm 27knt-31mph-50kph take your pick!
2 people on board lightly loaded with fishing gear (a little heavier on the return leg by 50kg thanks to a few silly Kings)
27Dec08 Whakatane to Whakaari and back to Whakatane
57nm-66m-106km take your pick!
66lts consumed


Posted By: flyfisher
Date Posted: 26 Mar 2009 at 9:25am
Stabicraft 389 with Mercury (Tohatsu) 40hp Lightning XR (13.5" pitch prop), running a Lowrance EP60r fuel flow meter through a Lowrance LMS522ciGPS head unit info:
 
WOT: 5200rpm - 47-51kmh for 16Lph fuel burn
Cruise: 4200rpm for 38-42kmh and 11Lph fuel burn


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Posted By: Edick
Date Posted: 13 May 2009 at 5:37pm
Stabicraft 7.6 Supercab 2006
About 3t+ loaded
Honda 225
Cruising at 4000 (21k) 38lph
Trolling at 9knts 13lph


Posted By: bullrun
Date Posted: 30 Jul 2009 at 3:55pm
Seaswirl 2301 2008
Volvo Penta D3 190hp Diesel
weight 2860 kg full of fuel - 420L
0.8 L NM @ 23 knots
 
.76 L NM @7 Knots
 
flat out 31 knots.


Posted By: Tagit
Date Posted: 30 Jul 2009 at 4:33pm
Bullrun - what year is your d3?


Posted By: Bossco
Date Posted: 08 Aug 2009 at 9:25pm
Fyran 760 pursuit,
Honda 225
Weight about 2.5t with half a tank of gas.
Only had a few runs so far so still playing around with trim etc.

Cruise, 23.5 knots at around 3750 rpm, 21 lph.
28 knots, 4000rpm, 29.5 lph.
38 knots wot, 72lph.




Posted By: CEEBEE
Date Posted: 20 Aug 2009 at 2:21pm
Ramco 555 with 2008 Mercury Optimax 90 hp
 
Cruising at 4000 - 4500 rpm reveals 1litre / 1 nauticle mile.
 
eg  From Takapuna ramp to behind the channel marker out the back of Tiri and back uses 20 - 25L fuel.
 
Cheers CeeBee


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I STARTED THE DAY WITH NO FISH AND I STILL HAVE PLENTY LEFT


Posted By: CEEBEE
Date Posted: 28 Oct 2009 at 1:29pm
Actually correction to my fuel figure = 1Litre / 2 Nautical miles travelled at cruising speed

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I STARTED THE DAY WITH NO FISH AND I STILL HAVE PLENTY LEFT


Posted By: Bryn23
Date Posted: 17 Nov 2009 at 5:02pm
2009  WXR 529 Stabicraft
2009 90 hp Honda four stroke
2 POB with canopy up
loaded with approx 50 kgs of crap
in 5-15 knot winds

4300RPM approx 2.9-3.0 km per litre 
cruising at 40 km an hour

5800WOT 1.6 km per litre
59 km an hour

Average from last 20 hours works out to be approx 2.4km per litre




Posted By: Wefaknis
Date Posted: 17 Nov 2009 at 7:05pm
Ramco Outsider
115 suzi 4 stroke
2 km  per litre of gas @3800 - 4000 rpm
 
 
 


Posted By: Brooook
Date Posted: 22 Dec 2009 at 8:23pm
Using the gps, I estimate 2km/litre with 17' 6mm alloy boat (canopy only) with 75hp Mariner.

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Give a man a fish and he will eat for a day.............Teach a man to fish and he will sit in a boat all day drinking beer,


Posted By: Raging Bull
Date Posted: 11 Jan 2010 at 3:33pm

Stabi 609 HT

2004 2 Stroke Yammy

26kts = 3500rpm @ 30 litres/h on a calm day, same fuel give or take a litre at 22kts in an average sea.


Weight in the boat makes hardley any difference.



Posted By: tas-tackle
Date Posted: 16 Jan 2010 at 2:57pm
Heavy plate ali boat 16ft... (similar to 16 pelin design)
60 hp Yammy 4 stroke...  (on fuel computer)
2 adults 2 kids and fish gear..
14.2 litres fuel used for 35.7kms... cruising 24mph and a few runs at 30 mph..
some idle while drifting..

That's 2.51kms.. per litre of fuel


Pretty happy for a day out fishing for 24 bucks...


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Posted By: Dazza74
Date Posted: 10 Feb 2010 at 9:38pm
6.1 surtees HT
2001 merc EFI 150
25knts @ 4000rpm = 35 liters/hr
6knts   @ 1500rpm = 11 liters/hr
1 day, tetoro to wide of manukau bar = 170 liters = $HEAPS


Posted By: mclay 6m
Date Posted: 28 Feb 2010 at 10:33pm
6 meter mclay cuddy cabin 
225 merc optimax
21 inch prop
23 lt per hour at 60 km
80 lt per hour at 90 km


Posted By: tas-tackle
Date Posted: 12 Mar 2010 at 4:17pm
Heavy plate ali boat 16ft... (similar to 16 pelin design)
60 hp Yammy 4 stroke...  (on fuel computer)
2 adults and fishing gear.
16.5  litres fuel used for 42kms..   cruising 24mph and a few runs at 30mph.. one at WOT 35mph
some idle while drifting..

That's 2.54kms.. per litre of fuel

Pretty happy for a day out fishing and the distance we traveled for 29 odd bucks

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Posted By: Unclejake
Date Posted: 15 Mar 2010 at 1:43pm
Fisher, that sounds pretty good and a lot better than we are getting with our 4.6 RIB. What pitch prop are you using on your F60?
 
4,800RPM is giving us 21knots with a 12p four blade but I think we need to keep the prop that low to get out of the hole with four PoB. I don't really like cruising at that high RPM though.
 
I will probably raise the motor one notch to see how it goes


Posted By: walter
Date Posted: 15 Mar 2010 at 3:57pm

Test ran ours yesterday. 22 foot marksply with 120 mercruiser (A little under powered for such a heavy old Boat, yes, but the price was right for the motor) Hooked it up to a tote tank with 24 litres in it. Top speed was 24 knots at 4000 rpm (wouldn't run it for too long at that) best cruising speed as about 19 knots at 3200 rpm. Traveled 25 NM on the one tote tank, so was pretty happy. 



Posted By: tas-tackle
Date Posted: 17 Mar 2010 at 4:26pm
Uncle Jake...  firstly...  Suspect it is the 4 blade small prop giving you bite to get out of the water but later, not much bite at high revs for not much forwards motion.. Ouch  that's very high revs for that speed and on a RIB.. ???
Lift the motor up and make some notes..  but I'd be looking for compromise with a 3 blade which maybe not give you the hole shot but will give you speed and economy for the distance traveled..
..............................
Not sure what the prop rating is on mine but its a standard alloy that came with the motor from the guy I purchased it off..  Looking at my book.. I think they tried different props for the boat it was originally on when the motor was new...
12/06 used 121/4 x 15C = 4500  12/07 used 113/8 x 12G = 6000   also 11 X 15e but no revs..
I installed the engine myself and really need to load it up with two folks and then check out the running, engine height and revs... and actually see what prop it is running... too busy fishing ..Big smile
Top speed is 35mph, two up and fish gear, canopy up as in piccie, flattish ripple water and trimming on the fuel comp for best revs... and a tail wind..Confused
Should take some notes I spose but I know I'm running at 24mph at 42 - 4300 revs...
This Boat Is 4mm all over.. built like a tank, no strakes to pound and VERY soft landings...
Only 4 ever made....




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Posted By: Unclejake
Date Posted: 17 Mar 2010 at 5:43pm
Thanks Fisher. I guess your prop is possibly a 13p. I see Plylite Fisherman lines in the hull.
 
Our RIB would have more hydro drag than your boat (the bags are often in the water when underway) but less wind resistance.
 
I will take some measurements over Easter but at the moment I can't get the trip meter to reset to zero despite pressing both buttons at the same time.


Posted By: tas-tackle
Date Posted: 17 Mar 2010 at 6:24pm
oh Jake Please dont say that... fisherman has more of a roundish bilge...   had a fisherman with a 70 yammie and it was an absolute DOG...
no..  its built on the lines of the 16 ft Pelin (sea nymph) Ranger.  will let you know what the prop is..  (press and hold for about 4 - 5 seconds pressing the left a fraction before the right...)


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