I average between 3 and 4 gallons per hour with my F150 four banger. It's pushing 3800 pounds of 18.5 feet fiberglass. I'm cruising at 3600 to 4200 rpm most of the time.
I want to ask, i hear that many of other brand's 4 stroke have some trouble with it's exhaust. does Yamaha 4 stroke have the same trouble??
THX...
My F150 has only been in service for one year and 109 hours. I have not had any exhaust issues other than it bleeding this black soot from the exhaust relief port. I'm told that is not a bad thing, just proof that the ringfree is working.
This motor runs very good and I am pleased in light of a catastrophic failure at fifteen hours. I checked the fuel burn yesterday it it was 2.8 gph. I usually run between 3600 & 4000 rpm pushing a 4400 pound 18.5' Ranger. With me alone, I get 32/34 mph @ 3600 and 38/40 mph @ 4000 rpm. Wot gets me 49/51 mph @ 58-5900 rpm. Not bad I think.
now i want to make a boat.
the boat's length is 11 m, and the width is about 2.5 m.
the total weight of the boat (include people, etc) is about 7275.25 pounds.
and i will use two Yamaha 150 4 strokes.
my question is how fast can my boat run in 4500 - 5000 rpm?
Fuel for Yamaha
Linear Mode
