New Yamaha 25 and Zodiac Mk 2 stock prop ?

DEF

Cadet
Joined
Jul 11, 2006
Messages
26
Got some readings with my gps. Cruses real nice at 20 mph, about half throttle. Full throttle it goes 26.2 mph with 2 onboard. It dosen't matter if the wife sets in the front or back, with the wind or against the wind, uphill or downhill, it still goes 26.2 mph. Am I rpm limited? If so, would a prop with more pitch would help? The stock prop
Is 9 7/8 by 11 1/4 and the all up weight is about 700 lb.
 

Crownie2

Petty Officer 1st Class
Joined
Jul 26, 2006
Messages
378
Re: New Yamaha 25 and Zodiac Mk 2 stock prop ?

Sounds like you're horsepower limited!

Any idea what your RPM's are at WOT?

Bob
 

DEF

Cadet
Joined
Jul 11, 2006
Messages
26
Re: New Yamaha 25 and Zodiac Mk 2 stock prop ?

Don't know the rpm I should probably be happy with 26 mph in a Zodiac, but a little more speed is always nice to have.
 

Dmitry

Seaman Apprentice
Joined
May 20, 2009
Messages
38
Re: New Yamaha 25 and Zodiac Mk 2 stock prop ?

I have similar top speed with the same engine on a 12 ft Achilles.
 
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