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Discussion in 'Prop Shop' started by Salty_South, Nov 15, 2009.
running a 25hp 2stroke on my Gheenoe Classic. Stock prop is just o.k. Any pitch recommendations?
what make motor ? Merc 10 x 13
yamaha 2stroke 25hp.
What are u trying to improve with your motor?
There's alots of propeller selections for the yami 25.
I had a cheenoe classic with 25hp 2-stroke yamaha. Tops out 31.5 mph with stock propelller at 6250 RPM.
So I switched to 10 x 13" pitch stainless steel propeller to lower my RPM and gain bit more speed.
When I got a electric jackplate then I switched to 10 x 11" pitch 4 blade stainless steel propeller with heavy cupped to run very shallow. Tops out 29 mph with 4 blade.
For best overall performance is 10 x 12" pitch stainless steel 3 blade propeller.
I don't see nothing is wrong with stock propeller like 11 7/8" pitch only comes with short shaft.
If u have a long shaft then you have a 9" stock propeller come with it.
Let us know.
Whitesnooky, I have the short shaft Yamaha. I am new to the 2 stroke motor so I cannot tell if I am reving too high. Did you notice you were reving too high with yours? Did the 10*13 prop increase your speed? Thanks for your input!
Do you have a tachometer installed?
no, not yet. I may need to do that though.
to really be able to dial it in you need a tacky-o-meter ;D
u need to do that first. I had one for my yami 25hp with a classic.
the first thing I seen my motor turning 6250 rpm in stock propeller. So I switched to 13" pitch and it was 5800 RPM I think.