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<DIV>Piped correctly, this engine has enough grunt to turn much larger props.
I've seen it turn a 17x10 cut back to 16" on a 81/2 pound model. Nat Penton had
it on his VooDoo Xpress with a stretched pipe (60 sized), and it ran around 7600
rpm. Very nice performance; would hover at half throttle.</DIV>
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<DIV>MattK</DIV>
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<DIV>In a message dated 2/4/2005 9:57:01 AM Eastern Standard Time,
randy10926@comcast.net writes:</DIV>
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<DIV>The 14X7 seems to be popular with people flying the widebody60 with
OS90FX with a stock muffler. I used a 13X8 apc with this engine on a
Excelleron90. Flies nice; but did not have enough vertical for me on the
stock muffler.</DIV>
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<DIV>Randy</DIV>
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Original message -------------- <BR><BR>> I know this question has been
asked a thousand times but... What are good <BR>> prop choices for an OS
91FX in an 8 - 8.25 lb pattern plane? The LHS has <BR>> quite a few
"sport" APC props, but only a few "pattern" props. I know the <BR>> blade
shape is different. I picked up a 13x8 "sport" to break it in with. <BR>>
Just wondering what to expect from each one and what I should consider good
<BR>> for tach. readings (no pipe - just the stock muffler). I've got
some ground <BR>> clearance so I can swing a pretty large prop if
necessary. TIA. <BR>> <BR>> John Pavlick
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