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  OMC 70hp 2 stroke/17 Montuak/ Prop?

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Author Topic:   OMC 70hp 2 stroke/17 Montuak/ Prop?
masbama posted 03-03-2002 03:14 PM ET (US)   Profile for masbama   Send Email to masbama  
What is the best size prop for this set up. Does SS make that much difference? Thanks!
bdb posted 03-03-2002 04:03 PM ET (US)     Profile for bdb  Send Email to bdb     
Currently using a 13.35 x 17 SS prop. RPMs about 56-5700. SS seems to have more bite than aluminum, but honestly the difference is negligible.
bdb posted 03-03-2002 04:05 PM ET (US)     Profile for bdb  Send Email to bdb     
I'm sorry...should be 13.25 dia, not 13.35.

Harpoon, crippled fingers, Harry

masbama posted 03-03-2002 11:44 PM ET (US)     Profile for masbama  Send Email to masbama     
Thanks Harry. What is your MPH at 4000 RPM's and WOT?
bdb posted 03-04-2002 07:17 AM ET (US)     Profile for bdb  Send Email to bdb     
WOT is about 37-38. Haven't been on the boat since winter started, and my feeble old mind can't really remember what the mph is at about 4000. But I don know that the engine seems happiest in the 3800-4200 range. My fuzzy recollection is that at those rpms it runs 26-27.

However, I am convinced that this prop is pretty much "right-on."

Harpoon Harry, standing in 8" on new snow.


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