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

 

"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

 

 

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.

 

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.