new forney has buzzing noise

[sagegraqy]

I just received a new on30 Forney and found a rather noisy (buzzing) sound when slowly starting to move.  If I hold the tender or put resistance the sound goes away.  Seems like some part vibration.  I am planning to install sound so I removed the tender housing and ran it.  Buzzing still occurred.   sound seems to be coming from the rear (tender area)

Any help?  has this been a common problem?

[NarrowMinded]

Run it on regular dc if the noise goes away it's from the motor, some decoder settings can eliminate most of the buzz...

Nm-Jeff

[ScottyB]

After trying it on DC, try to swap decoders. For whatever reason I've found the stock decoders are sometimes good, sometimes bad. Oddly swapping a "buzzing" decoder into a different engine works wonders, and vice versa.

My new forney buzzes as well, and I'll be picking up a new decoder at Trainfest this weekend to swap into it. I'm confident that will solve the issue.

Scott

[Stevelewis]

After trying it on DC, try to swap decoders. For whatever reason I've found the stock decoders are sometimes good, sometimes bad. Oddly swapping a "buzzing" decoder into a different engine works wonders, and vice versa.

My new forney buzzes as well, and I'll be picking up a new decoder at Trainfest this weekend to swap into it. I'm confident that will solve the issue.

Scott

I  can totally  agree  with  you,  changing  decoders  can  be  a  solution, it  happens wwith  other  manufacturers locos in different  scales so  its not an uncommon  problem,  It is  strange  though  how  the  'rogue' decoder  performs  fine  when  used  in  another  loco!

[NarrowMinded]

Sometimes the decoder just syncs better with the motor, I found purely by accident that swapping the motor leads around then changing the direction in the decoder can make a difference in how smooth the motor runs, might be something to do with how the armature is clocked in relationship to the magnets...


Nm-Jeff