Yamaha F100 on a 20"
 

Is anyone running a Yamaha F100 on a 20".I am looking for performance #s and prop size.I am not looking for speed and will be happy with a top end in the mid 30s with a cruise in the mid to high 20s.The 20" that I owned 25years ago performed very well with a Mercury 115 "tower of power".I'm just looking for opinions
Thankyou

I think fishstu is running f100 on a 20 MA. He reported 33mph and excellent economy which is about whats expected. Not sure what prop he uses, but a 13x15 or 13x17 yamaha semi-cleaver would probably hit the mark. Look into the PowerTech SCD series. They also make a 4 blade which would plobably maximize your efficiency.

I doubt it will jump out of the hole like the old tower but you'll likely double economy with little performance loss.

Maybe fishstu will chime in.

Thankyou for the information.It sounds like it will be a good engine for my needs

I have a F100 on a master angler. I like it and it is fast enough for New England waters. And light enough to allow a kicker, too (just).

With no kicker and the stern lifting prop I mentioned you might be able to use a regular fin, not a hydroshield, and get the same or slightly better performance, but that's a guess. Or go down in pitch and get better holeshot. I still haven't synced or timed the motor, and it has a little bog at 3000 rpm but it isn't a problem, as that is a speed faster than "no wake" but slower than planing speed.




Details here:

http://www.classicseacraft.com/commu...6&postcount=28

Thanks for the info

a 20-inch SC with an F100?
 

Wow. An F100 on the back of a 20-inch SC? ...and I thought mine was stern-heavy... I'll bet that one needs trimtabs...

Wanna buy a splashwell?

The F100 is the same weight as the Merc v6 that was on it so I don't expect any big issues with the weight.Until the recent changes to the site I was known as "Sola fide" and am already on your list for a splashwell

Yeah, I know. I was just yanking your chain about your typo...20" vs. 20'...

FYI, we're now up to 7 requests for the splashwell. Hoping to ge a few more. I hope to get the project moving by the end of November...

OOPS
Good catch.

The f100 is not that heavy at all for a 20'. I put a 2009 225 Suzuki 4 stroke on mine. It was a little heavy but not to bad. Never had trim trabs on it. They rigged the new ones before they shut down the factory with 140 4 strokes.