Anyone runnin a 150 4stroke???
 

Just curious if anyone else on here had a Yamaha F150 and what they get from it????? Just got mine on and seems to push the 20 like a champ......

This is what I am currently getting from mine with a 14.25 x 17SS and no tab
Sorry for weird format, just refuses to cooperate with me!!!!!!
RPM MPH GPH MPG
1000 4 ------ -------
1500 7 1.6-1.1 4.7-5
2000 8 2.3 4
2500 9 3.4 2.6
3000 11 5.1 2.2
3500 16 5.5 3
4000 28 7.2 3.9
4500 32 9 4
5000 34 10 3.3
5500 38 15 2.8
5800 41 16 2.6
6000 42 17 2.4

I've got no real comparison for you (being I'm a 2 smoker) but this what I get with mine with a 14x19ss prop. Yours is much better.

Idle 800rpm - 4mph - 3.38mpg
3900rpm - 30mph - 2.71mpg
4200rpm - 37mph - 2.63mpg
WOT 5100rpm - 44mph - 2.32mpg

I really need to put the other prop I've got on it to bring the rpm's up. Just too lazy.

Ive got a 14.5x17 off my Johnson if your other doesn't work. Good price, short drive.......

Thanks ssired!
I've got a 14.8x17al in the cuddy for a spare and just too sorry to try the other one I've got.
http://i175.photobucket.com/albums/w.../ssprop005.jpg

that looks familiar!!!!!

if i read this right,
at 37 mph, tsu is getting 2.63 mpg
at 38 mph, ssir is getting 2.8 mpg

Yamaha 150 4 stroke
 

Took ours out for first time on Saturday. I agree it does push it great. We got 46 mph (gps) without stretching the rpms out. I will play around with it a bit more this weekend.

Phatdaddy, I'm with you on this one I think. I don't see much difference between the 2. But to me it looks like tus is doing better overall. Using their figures:

tsu gets 44 MPH @ 5100 RPM using 2.32 MPG
ssir gets 42 MPH @ 6000 RPM using 2.4 MPG

So Tsubaki is going 2 mph faster while using less gas and less rpm (wear and tear) on his engine.

Ssiredfish, if it were me I'd put a 19P on your engine and give it another shot. I think you would definately benefit from the added pitch. :head:

It would be a better comparison if tsub were running the 17 pitch prop but looks to me like ssir is getting around 4 mpg at cruise while tsub is getting around about 2.7 mpg.