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

F-20 prop question

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Old 12-06-2005, 08:32 PM
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setxws6
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Default F-20 prop question

What prop would you guys recommend when I step up from the 10x6. I like the 10x6, it gives me good speed and great acceleration. What would a 9x7 or 9x8 do for me?
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Old 12-06-2005, 09:06 PM
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Cyclic Hardover
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Default RE: F-20 prop question

[quote]ORIGINAL: setxws6

What would a 9x7 or 9x8 do for me?




Much better than the 10's
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Old 12-06-2005, 10:10 PM
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setxws6
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Default RE: F-20 prop question

With a 9x7or8 still give me about the same takeoff roll? I understand it'll have better top speed, but what about acceleration and verticals? Just wondering. I'll end up trying it one day, just wanted a few opinions.
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Old 12-07-2005, 12:23 PM
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Default RE: F-20 prop question

Along with setxws6's question, do you guys use the standard 9x7/9x8/9x9 props or do you use the extremely narrow pylon props? (honestly I'm not even sure they have pylon props in that size, but it seems like a reasonable question just in case)

Thanks.
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Old 12-07-2005, 12:31 PM
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Default RE: F-20 prop question

Usually the standard blade 9x8 and 9x7 props work better on larger aircraft. Swapping to a 9" blade on these types of planes you will not notice a significant difference in take off performance.

I did fly my Patriot for a while with the Q-500 props (good use for leftovers !). At least the engine was turning up and happy. Flew fine...
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Old 12-07-2005, 12:55 PM
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Default RE: F-20 prop question

While I'm hijacking this thread ([8D]), that about the right prop size for a YS .45SE with tuned pipe? The term "YS" is too short to turn up good search results, so I'm having trouble searching old threads for suggestions.

Sorry setx.
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Old 12-07-2005, 01:32 PM
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Default RE: F-20 prop question

Well, from all the past search's I have done on the subject, I seem to find that most say to go with a 10x6 at first, with first flights and getting used to the plane. Then move up to a 9 which will turn more rpm's and give you faster speeds.

I was just trying to figure out which one to use really, the 9x7 or 9x8? There's probably not much noticeable difference anyway....
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