i have 2 athearn tunnel motors both been repowered with mashimma motors with the original flywheels . they run smooth at low speeds but when i wind up the speed and when they go around corners they make a lot of noise and the person who remotered them for me says that the flywheels are balanced propelery so my question is , where abouts would this extremly loud noise be comming from and what should i do to fix the problem?? thanks
Dose it make a binding nosie and slow down at all curves on ur layout also is this Ho.let me know.If so I had this same problems I think its ur gears they have to be in a certain place it took me a while to get them in place it makes you mad but its worth it.Please send me an E-Mail ASAP so I can help ya more
Try running them without the bodies if possible. If the noise persists, look at the gears and UJ’s for possible binds, the UJ’s can be tricky to re-align without binds on sharp curves and at speed. If the noise gets a lot less with the bodies off, it’s most likely there all the time but the bodies are allowing the noise to resonate,and accentuate the sound,
Good luck,
Dave Elbourne.
[ Rugby, UK. ]