Today's Message Index:
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1. 03:28 PM - Tru Trak Auto Pilot Servo (Trevor)
2. 04:29 PM - Re: Tru Trak Auto Pilot Servo (Michael Kraus)
3. 04:29 PM - Re: Tru Trak Auto Pilot Servo (Greg Young)
Message 1
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Subject: | Tru Trak Auto Pilot Servo |
I have a Tru Trak servo installed on my RV-7 elevator control and am
picking up a sudden large resistance to movement. After almost
disassembling my entire elevator system to find the "binding" I traced
the problem to the servo. There is of course an expected resistance
when moving the controls but I suddenly experienced a loud grinding
noise which was reminiscent of say a control surface rubbing over
corrugated conduit. I also found that the extra resistance was only
evident when the electrical connections were made (9 - pin plug
inserted) The same effect could be obtained when 4 of the 9 pins were
grounded against the side of the plug. Electrical current not applied.
This was not evident throughout construction and has only just
manifested itself. (now that I am ready for my maiden flight!) My
friends RV with identical setup does not have the resistance that I am
experiencing. Any thoughts anyone?
Trevor RV-7 Cape Town
Message 2
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Subject: | Re: Tru Trak Auto Pilot Servo |
Yes, pull the servo and send it in. You sure don't need the autopilot
on your maiden flight... Isn't the first instance of hearing of
issues with the servos....
Sent from my iPhone
On Oct 20, 2009, at 6:27 PM, "Trevor" <davist@xsinet.co.za> wrote:
> I have a Tru Trak servo installed on my RV-7 elevator control and am
> picking up a sudden large resistance to movement. After almost
> disassembling my entire elevator system to find the "binding" I
> traced the problem to the servo. There is of course an expected
> resistance when moving the controls but I suddenly experienced a
> loud grinding noise which was reminiscent of say a control surface
> rubbing over corrugated conduit. I also found that the extra
> resistance was only evident when the electrical connections were
> made (9 - pin plug inserted) The same effect could be obtained when
> 4 of the 9 pins were grounded against the side of the plug.
> Electrical current not applied. This was not evident throughout
> construction and has only just manifested itself. (now that I am
> ready for my maiden flight!) My friends RV with identical setup
> does not have the resistance that I am experiencing. Any thoughts
> anyone?
>
> Trevor RV-7 Cape Town
>
>
Message 3
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Subject: | Re: Tru Trak Auto Pilot Servo |
Disconnect the servo, remove/secure the pushrod and fly the
airplane.
Regards,
Greg
-----Original Message-----
From: "Trevor" <davist@xsinet.co.za>
Subject: RV-List: Tru Trak Auto Pilot Servo
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