I am trying to get a old Trix f unit going again...I have checked it out and I think the trouble may be in the pick-ups on the trucks to the frame? anybody worked on one?..Cox 47
Yes, I have. I hard wired the wheel wipers to the motor to eliminate the problem.
Here's a link to a thread showing these locos. http://www.the-gauge.com/showthread.php?t=10943
Attached are some photos of the rewired truck.
The 3rd photo is the stock truck.
The 4rth shows the modified wiper with the wire. Wire from an old mouse works great.
Some filing of the wiper insulators was required to clear the solder and wire.
I wired them directly to the replacement motor, but you can solder the wires to the PC board under the motor.