REFLECTOR: Pitch Trim Mystery

[John Dibble]

Ronnie,
Great suggestion.  Yesterday when it quit working I measured the voltage across the 2
wires at the place where I disconnect for canard removal.  It was less than 0.5V.  So
it appears the problem is in the switch.  I wasn't able to get an exact reading on the
down trim (which was still working) because I didn't want to press too long and have
more unwanted down trim, but I know it was much higher than 0.5V  Fortunately after
fooling with it for a while I got the up trim working again.  Any suggestions on what
to do with the switch?

John

Ron Brown wrote:

> John,
>
> I would suggest that you hook up a volt meter across the motor that you can
> leave connected while you fly.  Then you will be able to determine if the
> failure is in the motor - (voltage of plus or minus 12 volts but motor does
> not move), or no voltage (problem is in the switch, wiring connectors or
> relays).  The actuator is around $200 so you might want to do some trouble
> shooting before you blame the motor.
>
> Good luck (hopefully you find a bad switch or relay or loose connection!!!!)
> Ronnie