O.S. 61 SF what prop?
12-07-2008, 09:44 PM
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RE: O.S. 61 SF what prop?
12-08-2008, 01:25 AM
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RE: O.S. 61 SF what prop?
This engine is happiest propped in the mid 11 thousands. I run mine
in an Ultra Sport 60 turning an APC 12 X 7 at 11600 RPM. It hauls
around the rather stout 8lb Ultra Sport very well.
Mike Hammer
in an Ultra Sport 60 turning an APC 12 X 7 at 11600 RPM. It hauls
around the rather stout 8lb Ultra Sport very well.
Mike Hammer
12-08-2008, 02:29 AM
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RE: O.S. 61 SF what prop?
thanks, i'm just using it for sport and mid aerobatics no 3D, will start with a 12x6, 12x7, them maybe a 13x6 to see, will put a tach on them and test them thanks
12-22-2008, 07:40 PM
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RE: O.S. 61 SF what prop?
The owners manual offers a range from: 12x6 to 13x7. Two stroke engines are all about RPMs, four strokes will pull well at lower RPMs, but a two stroke has to be close to the max RPM to get full power.
You didn't indicate what your intentions are, 3D, aerobatic, or pattern. Definitely use your tach when choosing a prop, considering what type of flying you will be doing.
You didn't indicate what your intentions are, 3D, aerobatic, or pattern. Definitely use your tach when choosing a prop, considering what type of flying you will be doing.
