Quick question as I work along on my current rewiring of a DC motor: I recently replaced a Delrin worm with a brass one and, although it was a good tension fit on the motor shaft, I put a small drop of thread locker red on the shaft for insurance as I fitted the worm on. No problem there…but, now, as I am soldering fresh wires to the motor leads, I find that the top one, which slides into a grooved slot, is a bit loose. Can I use thread locker red in the same manner to secure this small brass tab? In other words, would it act as an adhesive for that purpose. OR is there a better solution? I don’t want to continue until I get some advice. Thanks for any feedback. Cedarwoodron
Need a LOT more info.
What make of model?
What kind of motor?
How do you determine `loose?’ Does it actually affect operation?
I most emphatically would NOT use a non-conductive adhesive on anything having to do with a motor’s electrical system.
Chuck (Modeling Central Japan in September, 1964)
It’s an old AHM can motor with the slide-in brass lead tabs at the top and bottom of the motor, where they contact the springs going down to the shaft. The bottom one is fine, but the top one (where I soldered the positive wire) is able to slide out easily and once I reassemble the chassis, frame and shell, I am afraid that it might slip loose from the spring contact while being run. Would a bit of foam tape across the two plastic edges and the brass lead tab itself be a better solution? Cedarwoodron
With a series of gentle but determined compressions, I would try to reduce the aperture of the receiver a bit so that it is a tighter friction fit. Needle-nosed pliers held carefully and just gently compressing the part should work. Failing that, you could also put a kink in the spade part, the other part (if I am picturing this correctly) so that when it is inserted, the raised portion acts like a friction brake.
Crandell