The Fishing Website : Discussion Forums : Fuel Flow and Economy Figures https://www.fishing.net.nz/forum/ Thu, 04 Jun 2026 08:05:10 +0000 Sun, 25 Apr 2021 18:27:18 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.01 360 https://www.fishing.net.nz/forum/RSS_post_feed.asp?TID=26102 <![CDATA[The Fishing Website : Discussion Forums]]> https://www.fishing.net.nz/forum/forum_images/web_wiz_forums.png https://www.fishing.net.nz/forum/ <![CDATA[Fuel Flow and Economy Figures : hi V8, back at last!Just the plain...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1807687&title=fuel-flow-and-economy-figures#1807687 Author: REIVER
Subject: 26102
Posted: 25 Apr 2021 at 6:27pm

hi V8, back at last!


Just the plain Enertia prop. 17" pitch, the same as th eSuzuki but I dont think it has quite the diameter. Lots of rake on it so still got a good surface area. Getting about 1.7 km/l which I am pretty happy with, slightly beter than my 200 Opti. Way better acceleration and holds on the plane at low speeds a lot better. Also lots of lift, the boat rides way better. Will keep my Suzuki prop for a spare, the Enertia is staying on the motor for sure. 
]]> Sun, 25 Apr 2021 18:27:18 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1807687&title=fuel-flow-and-economy-figures#1807687 <![CDATA[Fuel Flow and Economy Figures : His last log in visit wa 13 march.....]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1806961&title=fuel-flow-and-economy-figures#1806961 Author: Steps
Subject: 26102
Posted: 11 Apr 2021 at 11:01am

His last log in visit wa 13 march.. maybe he , like others have mentioned in replying to posts is/ has been having trouble logging back in..Angry
]]> Sun, 11 Apr 2021 11:01:00 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1806961&title=fuel-flow-and-economy-figures#1806961 <![CDATA[Fuel Flow and Economy Figures : Hi ReiverHow did you go with the...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1806903&title=fuel-flow-and-economy-figures#1806903 Author: v8rebel
Subject: 26102
Posted: 10 Apr 2021 at 11:45am

Hi Reiver
 How did you go with the Enertia prop?
 What diameter & pitch is it?

 Tight lines
]]> Sat, 10 Apr 2021 11:45:04 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1806903&title=fuel-flow-and-economy-figures#1806903 <![CDATA[Fuel Flow and Economy Figures : Sweet, what pitch Enertia did...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805496&title=fuel-flow-and-economy-figures#1805496 Author: v8rebel
Subject: 26102
Posted: 12 Mar 2021 at 8:06pm

Sweet, what pitch Enertia did you go for? Is it the original Enertia or the Eco Enertia [which is bigger diameter] for multi engine offshore hulls
Be interested to here your results

Tight lines!
]]> Fri, 12 Mar 2021 20:06:57 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805496&title=fuel-flow-and-economy-figures#1805496 <![CDATA[Fuel Flow and Economy Figures : v8rebel wrote:Yeah, USA &amp;...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805346&title=fuel-flow-and-economy-figures#1805346 Author: REIVER
Subject: 26102
Posted: 09 Mar 2021 at 3:45pm

Originally posted by v8rebel v8rebel wrote:

Yeah, USA & Canada now use AKI [anti knock index] octane ratings, which are a lower number than the RON octane ratings in Australasia

But when you read the manual for 4.2L V6 4stroke Yamaha, for example, for NZ, it tells you 225hp and 250hp min RON octane 90, but the 300hp is min RON octane 94. So that means run your 300hp 4.2L V6 Yamaha on 95 octane, if you don't want to void your warranty.
Pays to ask these questions before you buy, was the point i was getting at.

I guess thats why marinas always have 95 octane not 91 octane petrol to avoid damage to motors that need 95 octane not 91 octane

But getting back onto the subject, has anyone tried the Enertia prop on another brand of outboard or inboard? Be interested to here your results

Tight lines!



I have just fitted an enertia prop to my new Suzuki 175. Was getting 1.5 km/l with the supplied Suzuki prop, will keep you posted. 
]]> Tue, 09 Mar 2021 15:45:46 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805346&title=fuel-flow-and-economy-figures#1805346 <![CDATA[Fuel Flow and Economy Figures : Thanks for the correction Roz....]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805322&title=fuel-flow-and-economy-figures#1805322 Author: Steps
Subject: 26102
Posted: 09 Mar 2021 at 8:57am

Thanks for the correction Roz.
Later on in the days , sorting bench a sink/tap off couple IBC tanks plumbing was wondering if got it the right way round...
Usually only check internet/ emails etc once a day over morning coffee.
]]> Tue, 09 Mar 2021 08:57:05 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805322&title=fuel-flow-and-economy-figures#1805322 <![CDATA[Fuel Flow and Economy Figures : Steps wrote:American 95 is...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805284&title=fuel-flow-and-economy-figures#1805284 Author: OuttaHere
Subject: 26102
Posted: 08 Mar 2021 at 1:35pm

Originally posted by Steps Steps wrote:


American 95 is very close to our 91.


You've got that backwards... American 91 is premium fuel and better than our 95; their cheap fuel is "87" and equivalent to 91 here.]]> Mon, 08 Mar 2021 13:35:42 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805284&title=fuel-flow-and-economy-figures#1805284 <![CDATA[Fuel Flow and Economy Figures : I dont hit in miss method but...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805036&title=fuel-flow-and-economy-figures#1805036 Author: Steps
Subject: 26102
Posted: 05 Mar 2021 at 12:15pm

I dont hit in miss method but rather
 1/ Sort engine height.. may have to be changed for different conditions/ applications later
2/ Sort out the correct slip numbers for WoT , normal load for that size hull Sorting slip numbers is critical to do before moving on. If change engine heigh this has to be redone/ tweaked
3/Then match the pitch into the mid way of the WoT specs for that engine.
Reasons for midway is under normal load then have alight load , you go towards the max spec and visa versa for heavy load/ towing  within reason.

4/ From there one selects the amount of cupping  and/ or rake to fine tune for different uses and applications. And also engine height can be correct in one set conditions and not another, regardless of prop make type etc.
 And then throw in different gear box ratios..

Also the amount of power to hull weight (we are only talking planing hulls that actually plain..)  .. If min power , max, over powered... all effect how a given hull will react in different seas and applications.

Then we throw in 3 and 4 blade and the whole thing totally changes again... even engine height if on the cuspe between holes.

So to pick out a particular prop brand/ type/ model. then ask thoughts on it is much of a moot point given so many variables between even identical rigs... weight gear /crew/ east coast/ west coast

Do you have the data numbers , in particular the slip numbers for each of the comparisons above.?.. That would be very interesting and would show up a lot of info as to what is happening.

 Yes used Enertia, 4 blade 3 blade high rake, huge blade areas, big cupping slight cupping... alsorts brands models.. And now have quite a collection  hanging from my shed rafters.
]]> Fri, 05 Mar 2021 12:15:38 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805036&title=fuel-flow-and-economy-figures#1805036 <![CDATA[Fuel Flow and Economy Figures : Yeah, USA &amp; Canada now use...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805033&title=fuel-flow-and-economy-figures#1805033 Author: v8rebel
Subject: 26102
Posted: 05 Mar 2021 at 10:44am

Yeah, USA & Canada now use AKI [anti knock index] octane ratings, which are a lower number than the RON octane ratings in Australasia

But when you read the manual for 4.2L V6 4stroke Yamaha, for example, for NZ, it tells you 225hp and 250hp min RON octane 90, but the 300hp is min RON octane 94. So that means run your 300hp 4.2L V6 Yamaha on 95 octane, if you don't want to void your warranty.
Pays to ask these questions before you buy, was the point i was getting at.

I guess thats why marinas always have 95 octane not 91 octane petrol to avoid damage to motors that need 95 octane not 91 octane

But getting back onto the subject, has anyone tried the Enertia prop on another brand of outboard or inboard? Be interested to here your results

Tight lines!


]]> Fri, 05 Mar 2021 10:44:17 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805033&title=fuel-flow-and-economy-figures#1805033 <![CDATA[Fuel Flow and Economy Figures : PS. Check before you buy, some...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805000&title=fuel-flow-and-economy-figures#1805000 Author: Steps
Subject: 26102
Posted: 04 Mar 2021 at 7:11pm

PS. Check before you buy, some 4stroke outboards need to run on 95octane OUCH $$$$ ShockedShockedShocked

 Read you manuals 1st..
USA measures octane different than most of the rest of the world... so careful if it is a American manual
 There are 3 basic measurements for octane.. one high one is low and the other and ave of the 2.
American 95 is very close to our 91.
 Also you will find running a engine that requires higher octane $ per mile , will work out about the same than the lower octane fuel. Run a high octane engine on low octane  thinking will be cheaper, you will end up with long term issues and the $ per mile will be higher...

]]> Thu, 04 Mar 2021 19:11:13 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=26102&PID=1805000&title=fuel-flow-and-economy-figures#1805000