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Old 30 July 2013, 15:22   #1
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Country: UK - England
Town: norfolk
Boat name: meer
Make: hysucat
Length: 6m +
Engine: twin 60hp mariners
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Yamaha 130 V4 2 Stroke fuel consumption

I am currently looking in to the viability of my diving clubs boats with regard to costs per dive, our Yamaha 130 2 stoke V4 appears to be burning 3 litres a mile when run at 3800 rpm and about 22 knots with 6 divers and kit in our 5.8 m tornado rib. The engine is serviced annually with new plugs and filters and starts first turn with no problems.

From the wealth of experience on this site could anyone give me some indication as to whether this consumption is to be expected, I know 2 strokes are thirsty beasts but this seems excessive.

Thanks guys in advance.
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Old 30 July 2013, 16:03   #2
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Country: UK - Wales
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Boat name: GreenSeaPhotography
Make: Humber
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Thats about right amount if anything its very good as there is a lot of weight there. I have a Humber 6mtr sigle console with nothing in it just me. I have a 115hp V4 Johnson and burn a little less but the boat hardly weighs a thing. I have found that 3000rpm is the best economy speed and I get 1ltr per mile at that.
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Old 30 July 2013, 16:23   #3
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Country: UK - England
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Thanks for the feedback, I suspected that might be the case but was hoping we may have a tuning problem. The tubes of the boat are pretty poor so the boats not worth much hence replacing the engine with a 4 stroke might not be worth it. A 14 mile trip in rough seas where we couldn't get on the plane cost us £90 a couple of weeks ago hence the cost investigation.
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Old 30 July 2013, 19:38   #4
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Quote:
Originally Posted by hoops2 View Post
I am currently looking in to the viability of my diving clubs boats with regard to costs per dive, our Yamaha 130 2 stoke V4 appears to be burning 3 litres a mile when run at 3800 rpm and about 22 knots with 6 divers and kit in our 5.8 m tornado rib. The engine is serviced annually with new plugs and filters and starts first turn with no problems.

From the wealth of experience on this site could anyone give me some indication as to whether this consumption is to be expected, I know 2 strokes are thirsty beasts but this seems excessive.

Thanks guys in advance.
Did I see that at Sea Palling a couple of weekends ago? Sounds a bit OTT to me....
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Old 31 July 2013, 15:33   #5
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Country: UK - England
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Make: hysucat
Length: 6m +
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Posts: 16
Yep the club were there last weekend but I wasn't with them, they used 40 litres on a trip to the alster and back so approx 12 miles. I'm not sure what we could do to reduce this.
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Old 31 July 2013, 15:42   #6
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Originally Posted by hoops2 View Post
Yep the club were there last weekend but I wasn't with them, they used 40 litres on a trip to the alster and back so approx 12 miles. I'm not sure what we could do to reduce this.
Skip the tanks and free dive?
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Old 31 July 2013, 16:41   #7
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I will suggest this at the next club meeting :-)
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