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 recommendation needed...urgently

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Old 05-31-2007, 09:33 PM
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RPool
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Default prop recommendation needed...urgently

What size and maker of prop will help me get the very most speed out of a piped Evolution 26GT?
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Old 05-31-2007, 11:28 PM
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Default RE: prop recommendation needed...urgently

apc 8x6 to a 9x5 or 9x6
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Old 05-31-2007, 11:31 PM
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Default RE: prop recommendation needed...urgently

if you want to try something different and spend a little extra try this
http://www2.towerhobbies.com/cgi-bin...?&I=LXHCG4&P=7
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Old 06-01-2007, 12:08 AM
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Default RE: prop recommendation needed...urgently

ORIGINAL: buddude8

apc 8x6 to a 9x5 or 9x6
buddude8, you are in the wrong area. The 26GT is a 26cc gas engine, not glow. I would think that you will be looking at something like an APC 14x10 or 12, maybe the 13" props as well.


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Old 06-01-2007, 12:57 AM
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Default RE: prop recommendation needed...urgently

lol my bad figured it was a .26ci
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Old 06-01-2007, 05:54 AM
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Default RE: prop recommendation needed...urgently

What size and maker of prop will help me get the very most speed out of a piped Evolution 26GT?
You will need an airplane as well, or the speed will be zero.

Ed S
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Old 06-01-2007, 07:48 AM
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Default RE: prop recommendation needed...urgently


ORIGINAL: RPool

What size and maker of prop will help me get the very most speed out of a piped Evolution 26GT?

What kind of application here? What type of plane and or flying are you going to do with it? This will get you better answers.
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Old 06-01-2007, 08:28 AM
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Default RE: prop recommendation needed...urgently


ORIGINAL: buddude8

lol my bad figured it was a .26ci
yeah..... it is rare we deal with much of anything over 15cc here

As to the original question..... is it a stock 26 or do you have a performance jug installed?
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Old 06-01-2007, 04:08 PM
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Default RE: prop recommendation needed...urgently

It'll be stock and it'll be going in the new Hanger 9, F-1 plane...the Sundowner. I think the sweet spot for that engine...piped...is around 8500 to 9000rpm. If I go with a shorter prop I'm thinking more pitch as well. Are there any specific manufacturers that are preferred? Any I should avoid. I've used APC and Master Airscrew for my sport flying. This is my first application specific plane.
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Old 06-01-2007, 05:34 PM
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Default RE: prop recommendation needed...urgently

You don't need a plane, I saw a engine take off a test stand and speed was very good but not consistant.
ORIGINAL: Ed Smith

What size and maker of prop will help me get the very most speed out of a piped Evolution 26GT?
You will need an airplane as well, or the speed will be zero.

Ed S
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Old 06-01-2007, 08:39 PM
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Default RE: prop recommendation needed...urgently


ORIGINAL: RPool

It'll be stock and it'll be going in the new Hanger 9, F-1 plane...the Sundowner. I think the sweet spot for that engine...piped...is around 8500 to 9000rpm. If I go with a shorter prop I'm thinking more pitch as well. Are there any specific manufacturers that are preferred? Any I should avoid. I've used APC and Master Airscrew for my sport flying. This is my first application specific plane.

Have you bought the engine yet?
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Old 06-01-2007, 10:10 PM
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Default RE: prop recommendation needed...urgently

No I haven't. Anyone have thoughts? Bueller?
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Old 06-02-2007, 05:02 AM
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Default RE: prop recommendation needed...urgently

My piped OS120AX turns a APC 14x12 at 10000rpm and gives great speed on my own design 80" speedplane. I would look for a APC 14x12 or 14x14 for that 26GT.
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Old 06-03-2007, 02:26 PM
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Default RE: prop recommendation needed...urgently

Rpool:

Rare error, but excuseable one time by Bud dude 8. Happen to have this engine in a QQ 73" Yak. Engine is a good runner for 3-D, a little short on power for this application. On the 80" span Sundownner, think it would not be very good due to overall weight of the total system and ultimate rpm you can expect out of the engine without damageing the thing. Would not exceed 9k or so due to the manufacturs recommendations. The "Sundownner" is a great looking bird, following in the GP sports flyer intended Little Toni, Shoestring, and Cermarks Alley Cat. All even Jett 90 powered were not anything to brag about. They were designed as a Sports model, and fly well in that application, just not what I would call fast. With this in mind, suggest you look around for a good 140 to maby the Mark 210 2 strokes. Less money in the engine and may give you some more needed rpm. Remember, this is a 80" span bird with lots of drag. Suggest you look at some of the "Unlimited" racing, and their choice of engines of the winners. They are proven movers, with a few years of R& D behind them. If you will be happy with put putting around at around 75 mph, the 26 will do. Do a little research on the unlimited engines if you want 125 to 150 which is a bunch of fun around here. ENJOY
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