OS 75 AX breaking prop size
10-14-2009, 08:26 AM
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OS 75 AX breaking prop size
I am about to break in an OS 75 AX it recommends props to be 14x8 or 13x 8-7. I think the 14x8 is a bit large. Any suggestions. Thanks.
10-14-2009, 09:34 AM
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RE: OS 75 AX breaking prop size
Use the smallest diameter, largest pitch prop recommended in the manual. Probably a 10-9. Or if you want to use a prop you may actually use, a 11-8.
10-14-2009, 12:14 PM
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RE: OS 75 AX breaking prop size
I used an APC 14X6 on mine and it worked just fine. Engine is mounted on a Hanger 9 Stick has lots of power. Very sweet running engine.
10-21-2009, 10:13 PM
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RE: OS 75 AX breaking prop size
i used a 13x8 3 blade and it work just fine (the way you switch from 2 to 3 is drop a inch in dia. and go up two in pitch) so a 14x6 is fine
