On Apr 10, 9:37*am, "mmc" wrote:
"Tim" wrote in message

...

I'm familiar with two cycle motorcycles, and they're power band. Some
are really finicky and doggy untill you hit a certain rpm, then can be
almost uncontrolable. (Motocross) while some have less power yet a
wider range of usable torque.(Streetbikes) *and some have the tuning
at the absolute bottom of the rpm ranges (trials bikes)

But concerning a v-4 johnson/evinrude etc. Is there a powerband where
you run a set range *rpm for maximum efficiency? too little rpm labors
the engine, and too much gaines little except sucks more fuel?

Well, my experience is that just enough throttle to keep a boat on plane is
the most efficient (get somewhere) setting but this doesn't work for a
normal, round tube pontoon boat.

Yes, this is going to be a bit of a learning experience, fo' sho'