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 Hinge control horn?

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Old 03-21-2003, 02:27 AM
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ckoerner
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Default Whiplash Hinge control horn?

What is everyone using? I used the one that came with the kit and I can barely move the elevon by hand with the control rod. They are the short robart ones. Any suggestions?
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Craig
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Old 03-21-2003, 04:42 PM
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Default Whiplash Hinge control horn?

Craig,
I'm using Sullivan 537's, but I have yet to install the JR 8411 servos to see how they work. My MPX Royal Digi's don't have enough torque for that stiff elevon.
~John
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Old 03-21-2003, 04:51 PM
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Default Whiplash Hinge control horn?

I received an e-mail. Guys are cutting the the bottom of the hinge to make it loose. I guess the top is Kevlar and the bottom of the hinge is fiberglass. They say to cut the fiberglass and then seal the bottom of the hinge line. I guess I will give it a try. You would need a 800oz/in servo to move it the way they are now.
Later,
Craig
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Old 03-21-2003, 08:15 PM
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Default Whiplash Hinge control horn?

Craig,
Mine came cut from the factory. The factory also included a flexible tape to seal the cut underside of the elevon.
They are still very stiff, hence the JR8411's
~John
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Old 03-21-2003, 08:23 PM
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Default Whiplash Hinge control horn?

John,
I believe mine was one of the first batches. I don't think it was done to mine yet. I finally got the time to finish this thing and am about ready to put it back away and buy a DD. I have a brand new JETT FIRE .50 waiting for a home.
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Craig
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Old 03-22-2003, 12:06 AM
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Default hinges

I worked my original hinges up and down until the gel coat cracked. I mean lots of throw. They now move just fine. Using 1 inch robart horns. Didnt have to cut or tape anything.
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Old 03-23-2003, 04:50 AM
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Default Sullivans

I used sullivans. and the are great.
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Old 03-23-2003, 04:51 AM
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Default The other end

Here is connection at the servo.
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Old 03-24-2003, 02:12 PM
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Default Whiplash Hinge control horn?

I cut the fiberglass on the bottom. It's a lot looser, but it seemed to weaken it a lot. Now the top hinge started to crack.
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Old 03-25-2003, 02:04 AM
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Default hinges

You must have one of the first whiplashes, work your surfaces back and forth, dont worry about any cracking its just superficial, after you get the control surfaces loosened up, sand and repaint the cracks..
we're sending sullivan 557 horns with the kits now, also the kit comes with C/F rods and the New version is still tight but not too stiff.
The hinge is kevlar, you will never rip the hinge but you can cut thru it.. so be careful when slitting the underside..

If you have the original box, send it back to us and we'll fix her up for ya...

fly the whiplash before you go to a DD, you'll really like this plane..

call if I can help

Rick
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Old 03-26-2003, 06:56 PM
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Default Whiplash Hinge control horn?

Well I have it ready to fly. All I have to do is break in the JETT FIRE .50. I was suprised how well the servos moved the elevons. I can easily get 60degs of throw. I plan on setting it up for at least 30degs on high rates for landings. Does this sound right?
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Craig
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Old 03-26-2003, 07:08 PM
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Default controls

Thats a lot, 30 degrees is almost too much, the only time you will need high rates is at launch, once the "whiplash" starts flying, it will take very little deflection.

The Jett 50 will shock you in its performance, if you arent accustom to very fast planes, take it easy on the first few flights until you have her trimmed in and you're acclimated to the reaction time of the plane..

Trust me, you're in for a treat, but be advised that it can be very sensitive with lots of throw.

Use a lot of UP for the first flight but not too much aileron throw.

It should literally come out of the hands of the person launching it, let it fly out at about a 30 degree angle of attack, dont nose her up too much because until it starts flying, you can stall it, keep it level, gain speed, fly out and then trim in.

good luck, have fun..
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