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HelicopterRadio - Servo - Gyro - Gov - Batt › problem with servos
12-26-2008 08:38 PM  8 years agoPost 1
alien

rrApprentice

Middletown N.Y.

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Hi Everone and hope all had a great christmas. Anyway Question is I just install a new Pcm rx R149dp-72 and I notice channel 1 and 2 which is aileron and Elevator each other Move very little when the other is moved Like when I move the aileron the elevator servo moves a little and when I move the elevator the aileron moves but even less but it still moves it did not do this before I am just wondering if this is cause of the pcm or something else I dont remember if it did it when I first put it in or just didnt notice it any answers out there could use the help O yea the tx is a 9CH Futaba Thanks

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12-26-2008 09:07 PM  8 years agoPost 2
Sam2b

rrElite Veteran

Seattle, WA

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What helicopter is this? And what CCPM degree mix is it? 120 degree? 140 degree? other?

What ever CCPM swash you have you will need to set your transmitter respectively. Maybe that is the issue: I'm guessing.

_Sam B_
Team MSH USA * Protos Max * Xpert servos * Cyclone Blades * ProgressiveRC * VoltMagic * Ecalc

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12-26-2008 09:34 PM  8 years agoPost 3
alien

rrApprentice

Middletown N.Y.

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Its a Bell47 by century helicopter it dont have ccpm.

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12-27-2008 12:21 AM  8 years agoPost 4
relax1

rrVeteran

Tampa, FL

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You might be giving a little aileron or elevator input. Put a 100%expo on elevator or aileron then try it.

Luis

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12-27-2008 01:54 AM  8 years agoPost 5
alien

rrApprentice

Middletown N.Y.

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I will try that and report back Thanks relax as off now I only have about 65% . I will bring it up to 100% Again Thank You I will give it try

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12-27-2008 09:55 AM  8 years agoPost 6
Sam2b

rrElite Veteran

Seattle, WA

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alien,
are you using an electronic flybarless stabilization system like the Vbar or SK360? If so, your description matches a problem with phasing: elevator movement with aileron, and vice versa.

_Sam B_
Team MSH USA * Protos Max * Xpert servos * Cyclone Blades * ProgressiveRC * VoltMagic * Ecalc

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12-27-2008 10:58 PM  8 years agoPost 7
alien

rrApprentice

Middletown N.Y.

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Hi Sam2b No I am not but I am useing the FMA CO-PILOT Stabilization System. I think I found the problem when I unplug the servos and plug them in the nomal way there is no problem but when I go back and hook up the Stabilization system it starts all over again. I did find on the Stabilization System a wire that was bad and has to be redone. So am going to redo the wires and hopefully that will be it. I will post back. O one more thing I did find out that I may need a Buffer on the servo it says if useing a PCM RX. In which I am. But will post after fix.

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12-28-2008 07:23 PM  8 years agoPost 8
relax1

rrVeteran

Tampa, FL

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Why do you want to use a FMA CO-PILOT Stabilization System? Are you doing photography? If not just keep it simple and work on your pilot skills. You will be glad you did.

Luis

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