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

Prop selection

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Old 04-10-2003, 10:40 AM
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Dee Miller
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Default Prop selection

What is the best prop for a Sport Jett .50 mounted on a DD ?
Old 04-10-2003, 12:53 PM
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Mike Connor
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Default Re: Prop selection

After trying from a 10 x 6 to a 8.75 x 8.5 my favorite was a APC sport 9 x 8.
Old 04-10-2003, 06:12 PM
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daven
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Mike, do you think that would be a good prop for the heavier Whiplash, also?

I have the same engine going on the Whip.
Old 04-10-2003, 06:40 PM
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Mike Connor
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Default Whiplash Prop

daven,

I do not have any experience with a Whip but I suspect a 9 x 8 would work well. Good speed plus more thrust then weight.
Old 04-10-2003, 08:40 PM
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Default Prop selection

Well, I have a whole drawer of pylon props, so I'll have plenty to play with. I assume the 9x8 is a sport prop. It seems odd that a sport prop on this engine would out perform the pylon props that are so close to that size, but it wouldn't completely suprise me.
Old 04-10-2003, 09:02 PM
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Mike Connor
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Default Prop selection

The pylon prop may of had the edge on speed but it was too close for me to tell. The 9x8 Sport prop obviously had more thrust with faster acceleration on my 2 lb. 12 oz. Dust. I usually ran the Super Sport muffler so the pylon prop may work better with the quickie muffler.
Old 04-11-2003, 10:13 AM
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Dee Miller
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Default Prop selection

Thanks to all for the help.
Will try this weekend.
Old 04-15-2003, 10:26 AM
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Dee Miller
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Default Prop selection

Mike,
I tried the APC 9x8 and it made a big difference.
I was using an APC 10x5. The engine now turns near
17200. This is about 700 more than with the 10x5.
Thanks,
Dee

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