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ContinuousWave: Whaler Performance
Prop for 70 horse Johnson on a 17 montauk
|Author||Topic: Prop for 70 horse Johnson on a 17 montauk|
posted 06-27-2002 09:28 AM ET (US)
what is the prop size fr a 70 hp johnson on for a 17 montauk!/? please help
posted 06-27-2002 09:48 AM ET (US)
I'm using a 13.25 x 17. RPMs are at the upper end of the operating range. Seems perfect. It's stainless, but I also have an alum. and it runs out the same.
posted 06-27-2002 11:52 AM ET (US)
What year 70? Older ones redlined at 5500. I think 86+ are 6k redlines. If you hit redline or go just above it you can have it double cupped which is good for 200 rpm reduction and = 1" of pitch.
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