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Old 15 August 2009, 13:27   #1
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Yamaha 15 fuel consumption

Just bought a bombard 380 and yamaha 15 2 stroke for a bit of fun when i cant lauch my rib
just wanted to know roughly how long 25 litres of fuel will last in hours
cheers
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Old 15 August 2009, 13:31   #2
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It depends how enthusiastic you are with the throttle!

Going hard/fast you can probably get around 5 hrs out of a 25L tank on a 15 HP 4str.

With a 2st 20HP I just managed 60 nm round trip at a "fast cruise" on a flat calm day, with one up in a similar sized but heavier boat than yours.
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Old 15 August 2009, 13:34   #3
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Quote:
Originally Posted by Dino89 View Post
Just bought a bombard 380 and yamaha 15 for a bit of fun when i cant lauch my rib
just wanted to know roughly how long 25 litres of fuel will last in hours
cheers
About 7.0 litre/hour at full throttle, with light weight inside (passengers + gear) and calm waters, no wind.
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Old 15 August 2009, 14:58   #4
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thanks thats plenty for a fun day !
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Old 20 August 2009, 13:37   #5
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I have the yam 15 2 stroke on a 3.4 zodiac. Usual days out are 4-5 hours mixed use, mid range revs to get on the plane & stay there. Fuel use varies 10 litres flat calm, 1 person, 15 litres 2 people, lumpy seas.

Don't sit on the fuel pipe like I did today & have the engine die just as you are crossing a busy channel!!! Filled my pants!!! ho hum you live & learn.
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