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JR-Spektrum . E-flite . Futaba-RC

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Antiques or Out of Business > Pitch curve and throttle curve ??
 
 
GMPnut
Senior Heliman
Location: Michigan USA

Does anyone know what the best Pitch curve and throttle curve numbers are for a GMP Competitor (or do I need them), as I'm a beginner..

Mike..
04-24-2008 01:26 AM
 
 
RAK402
Veteran
Location: Alhambra, CA

Mike,

I will try to find my old instructions (they will be from the Falcon 808, from which the Competitor was derived).

When these things came out, there were no computer radios-therefore, unless someone is running one with a modern radio and will share their pitch curves, you will have to figure it out a bit.

The stock blades were semi-symmetrical. The instructions showed diagrams of the servo wheels offset, for intentional differential throw, and of the pitch, if I can remember correctly.

The throttle comes in slow, then advances strongly near full.

The pitch comes in fast, then tapers off near full.

The object was to get the blades past the negative and into the positive pitch range before the motor was turning the head too fas.

Those who did this right, back in the olden days, were rewarded with pretty constant rotor speed.

Those that did not were treated to some spectacular overspeeding (as I mentioned in the other thread).
04-25-2008 11:33 PM
 
 
GMPnut
Senior Heliman
Location: Michigan USA

Ok. You see after 2 years of working on my Competitor I have finnished restoring it from the dead PHEW.. it has all the modern stuff on it IE SL560 gyro (with a JR 2700g servo), GV-1 gov, ff8 Co-pilot, and a in-flight mixture control, so now the heli just needs setting up so its ready for flight. after that I'll start restoring my other heli (it's in parts at the moment) a GMP Cobra (I'm a big GMP fan) and I also have all same modern stuff to go on that heli too (except for the ff8 Co-pilot I bought all the other gear here on RR)..

Mike..
04-26-2008 02:43 PM
 
 
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Antiques or Out of Business > Pitch curve and throttle curve ??
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