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

I feel the need ..the need for speed

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Old 05-07-2003, 09:55 PM
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Dogz
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Default I feel the need ..the need for speed

Just finished my Modeltech quicky 500. I put a Tunder tiger 46 on it with the standard muffler. It balanced out quite nice with the servos mounted on the rear externaly for the rudder and elevator.. Now I'm at the prop stage.. currently I'm useing a APC 10/7 on the plane but now I'm after some speed... well more speed.

The only thing is I still want to keep the plane managable on take -off's. I'm fly off a grass strip quite rough so still need some thrust to get the plane moving and off the ground in a fairly short time using it's own power.

Any prop tips. I was thinking something allong the line of a 9/9 or 9/8 if they stock such a prop at my LHS
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Old 05-07-2003, 11:04 PM
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Razor-RCU
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Default well

Depending on the total weight- a 9x9 would be about right...But would lengthen the takeoff roll quite a bit-

How rough is your runway?
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Old 05-08-2003, 02:37 AM
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Dogz
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Default I feel the need ..the need for speed

The runway is bad... well it not bad for my Cap but the Quicky is small and any bump in the runway throws it of track..

It's not to bad if I can get it up to 5 or 6 Mph and the rear wheel of the ground. I phoned my LHS and I'm going to try a 9/8 and 10/8 and see how it goes.
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Old 05-08-2003, 02:56 AM
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FlooredCOBRA
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Default I feel the need ..the need for speed

you may want to look into a pipe also to get some more power and speed
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Old 05-08-2003, 02:59 PM
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banktoturn
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Default I feel the need ..the need for speed

Dogz,

Prop selection can only help you with thrust. If you really feel the need for speed, you have to think about drag too. Get those servos back inside where they belong. You might as well be towing a parachute.

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Old 05-08-2003, 09:54 PM
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Dogz
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Default I feel the need ..the need for speed

very good point banktoturn.

I used a 9/8 prop today but having a hard time on take off. With Dew on the run way I have to push start the plane so it doesn't nose over.

I must admit it not a true racer but it is quick and nice to fly. Half throttle to full very steady.. and dead sticks are easy. I'm pretty happy with it.. I can keep up with those World models Mustangs now...

Set up the way it is makes it a true all rounder.....
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