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HomeAircraftHelicopterHelicopter Main Discussion › Head speed vibration?
10-13-2011 05:22 PM  7 years agoPost 1
tenore

rrNovice

North Little Rock, Arkansas USA

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I have a T Rex 600 electric clone (Chaos). When I ran it up to speed, in normal or idle up, I would get a wobble. One of the experts here, after he saw it, said it was a low head speed vibration, and I needed to get the headspeed up above 2000 rpm. We were able to do that with adjusting the endpoint on the motor, but then I put a 13t pinion on it (I had a 11t). It's working fine, but I wondered if this will happen at all lower rpms, or if it will go away as you lower the head speed. I am thinking along the lines of more scale headspeeds.

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10-13-2011 05:31 PM  7 years agoPost 2
Solmanbandit

rrElite Veteran

Tucson , AZ

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What KV motor are you running and how many cells?

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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10-13-2011 06:26 PM  7 years agoPost 3
3D-ALEX

rrApprentice

Daytona Beach, FL

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Probably an issue with your dampers. Fly it at the higher headspeeds until they are broken in, then try lowering the headspeed.

Alex Morley
Logo 6003D

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10-13-2011 11:41 PM  7 years agoPost 4
w.miller

rrVeteran

jenks, OK

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tHAT SOUNDS LIKE A DAMPENER PROBLEM. Caps.
anyways flying at low headspeed should be no differnce because I do it all the time. the ircha logo that flew for like 30 min had like no headspeed. replace dampeners and go from there. If its still there somthings bent.

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10-14-2011 05:14 AM  7 years agoPost 5
cap231ex

rrApprentice

Muncie , Indiana , USA

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Diffentlly a dampener issue replace the stock Chaos one with Align gray 70* and you can run as low a HS asyou like. Most of the vids I have seen on the Chaos helis they all run crazy hi HS for hardcore 3D , the only problem with that is not everyone flies like that.

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10-14-2011 05:23 AM  7 years agoPost 6
Solmanbandit

rrElite Veteran

Tucson , AZ

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I don't think it is a dampener problem. I've had many other issues cause it and hasn't been a damper issue yet. That is unless it was worn out.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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10-14-2011 03:52 PM  7 years agoPost 7
coptercptn

rrElite Veteran

Mesa AZ. USA

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another issue may simply be that you have your blades too tight/loose.. Also check the runout at the head..

Home of the "Sea Cobra".....

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10-14-2011 04:47 PM  7 years agoPost 8
w.miller

rrVeteran

jenks, OK

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Blades my not be balanced.

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