Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Which prop??

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Old 05-25-2002, 01:13 PM
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bestrcpilot
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Default Which prop??

I'm looking for prop info for a O.S. 46 rf df with a Bolly CF pipe.
This setup is going in my new DD that has been thined 20% and clipped 2 1/2 inch's.
I have run APC props in the passed on other DD but can get only one flight with them ( after 1 flight the prop is bent forward at the tips.)
I'm looking at the Bolly CF props but the only one that I can find is a 10.5x8.5 I thinking of using one cut down.
What do you all think?
Thanks
Scott Yeo
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Old 05-25-2002, 02:01 PM
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miderror
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Default 9x7

I've run that set up and I didn't like the bolly too well. The pipe
that makes the eng wake up is the OS pipe. Didn't look like it
would with the baffels and all but it really comes on. Dub Jett
designed that one for OS. Too bad it's out of production.

For props, the search is on. The best speeds on that combo where a Rev-up 9X7 reworked to a eagle type airfoil. Cast a couple carbon 9X7 Rev-up copies but they didn't do quite as well and the mold is long gone.

You can try all the higher pitch props but none of them would
come on for me. About the max pitch is 7 3/4 in good air.
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Old 03-09-2008, 03:00 AM
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Razor-RCU
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Default RE: Which prop??

Try a 10x4 Zinger
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Old 03-09-2008, 01:29 PM
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Mike Connor
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Default RE: Which prop??


ORIGINAL: bestrcpilot

I'm looking for prop info for a O.S. 46 rf df with a Bolly CF pipe.
...( after 1 flight the prop is bent forward at the tips.)...
I'm looking at the Bolly CF props but the only one that I can find is a 10.5x8.5 I thinking of using one cut down.
What do you all think?
Thanks
Scott Yeo
Did you mean a O.S. 46 VR-DF?
I have never seen a prop that is bent forward at the tips from flying.
What is wrong with the 7.4" CF Q40 props from APC? Are those the ones that bent forward?
I think cutting down a 10.5 prop that much is a bad idea.
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Old 03-09-2008, 01:30 PM
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Mike Connor
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Default RE: Which prop??

ORIGINAL: Razor-RCU

Try a 10x4 Zinger
The perfect speed prop for a DF engine.

Edit - I need to learn to check the date before posting. [>:]
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