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+--- Thread: odd noise (/showthread.php?tid=10073)
odd noise - jim currie - 09-19-2025
I have a blue box Athearn gp 30 35 38 or 40 that was gave to me that has an odd noise when running in one direction only you can barely hear it without the shell put the shell on and its louder , i think that the shell is just acting as a amplifier checked gears and they seem fine wheels axles are tight in the gears. so, I'm at wits end anyone have any ideas?
Jim
RE: odd noise - ngauger - 09-19-2025
I would start oiling (or graphite) all the moving parts until it goes away
RE: odd noise - jim currie - 09-19-2025
(09-19-2025, 03:27 PM)ngauger Wrote: I would start oiling (or graphite) all the moving parts until it goes away
it's been lubed with never seize (collided nickel in a synthetic oil) been my standard lube for 30+ years.
Jim
RE: odd noise - TMo - 09-20-2025
Shafts tight in the flywheels and running gear? Gotta be motor/shaft/gear interface - that's the only stuff that makes noise unless you got another Gremlin.
RE: odd noise - jim currie - 09-20-2025
(09-20-2025, 07:10 AM)TMo Wrote: Shafts tight in the flywheels and running gear? Gotta be motor/shaft/gear interface - that's the only stuff that makes noise unless you got another Gremlin.
the problem is that it's only in one direction I swapped trucks and it's still in the same direction.
Jim
RE: odd noise - jim currie - 09-21-2025
well, I finally run down the noise. it was a bad motor mount causing the fly wheel to scrape on t the frame in reverse mode only put a screw into the mount to tighten it up and Wala the noise is gone.
Jim
RE: odd noise - ngauger - 09-21-2025
Great detective work!!! Glad you found it !
RE: odd noise - TMo - 09-21-2025
I didn't think it was a Gremlin! Good to hear you don't have those....