Model Railway Forum

I think this is something to do with the PWM frequency of the supply to the motor. Zimo set a relatively high frequency of 40KHz I think. There's a way to alter it via CVs but I can't tell you which, you should be able to find out from the very comprehensive decoder user manual. Thanks i will check...

It shouldn't matter too much in this case, but just for clarity do you have a z21 or a Z21? Whichever you have, the output is 3amps so should easily drive one loco with sound and should power more than that. I have a z21 and my wiring is pretty rubbish (keep meaning to sort it), but I have never ha...

Also, do you have a DCC Power Bus pair of generous sized wires running under the baseboard and onto which smaller Dropper wires connect to the rails above? - Ideally every piece of track has a pair of droppers soldered on to their rails. It is not normal to have locos "Running" on a Progr...

Walkingthedog wrote: ↑Mon May 02, 2022 3:59 pm Silly question first. Is your track and wheels spotlessly clean?

Of course always clean as i said all other locos no problem.

Hello. Not sure if anyone can help i doubt it as the place i bought the z21 from cannot help just says its my wiring which is rubbish all else works fine. Anyhow here goes. 1st problem.I have the Bachmann "Mauritania" class 40 With Zimo sound decoder and the sounds are superb, however it r...