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

Whiplash Ready For Launch

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Old 11-16-2002, 05:51 PM
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sydclement
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Default Whiplash Ready For Launch

All up weight 4 lbs 7 oz. empty tank.
Throws in degrees:
1. Low rate for flying, 8 ail, 10 ele with 30% expo.
2. Mid rate for takeoff, 16 ail, 18 ele with 40% expo.
3. High rate for landing, 34 ail, 36 ele with 50% expo..
CG as per instructions.
It does move and land smooth..
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Old 11-22-2002, 04:58 AM
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Default Whiplash Ready For Launch

Syd,
Hope you don't mind a few more questions as I'm working on my Whiplash.

1) Are you happy with the control throws/deflections and the expo that you previously posted?

2) How far from the inboard edge of the elevon are your horns mounted?

3) What was your method of measuring/setting the engine thrust, (2 degrees right)? In other words, how did you come up with a reference line or point?

4) Have you tried another prop? Perhaps the 8.8 x 9.75?

Thanks again for all your help. I've sanded and spot filled and really worked a long time today getting ready for primer.
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Old 11-22-2002, 01:42 PM
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jlong34016
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hey s3hd i tried to email you but it bounces.
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Old 11-22-2002, 03:27 PM
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Default Whiplash Ready For Launch

I've sent you a private message via RCUniverse.com
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Old 11-22-2002, 09:12 PM
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sydclement
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Default Whiplash Specs

S3HD:
The control throws I listed are working great. You need at least
30 degrees up elevator for good landings.

Ric mounted my small Robart horns 3/4 inches from the edge
with a slight angle towards the servos.

To set the engine thrust, stand the Whiplash on its trailing edge
and mount a disk on the front of the engine where the prop
should be. I use a Sears angle finder to get my 2 or 3 degrees
right thrust then I drill the engine mounting holes. Don't
carve any more from the engine mount than you need and
make a nice snug fit. With a Jett 50 you will have to carve out
some of the mount just to get it in there.

Just got my APC 8.8-9.75 props today and will be doing radar
runs this week.

Don't forget to use a sand paper washer on the prop driver
of the Jett 50. Syd
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