Well said but the reality is different - few days ago i received from Bachmann ebay dealer MDT Plymouth with old-fashion motor ... Now i seek how to get MDT Plymouth with new engine.

Maybe someone can help me - i want buy MDT Plymouth with new, silent motor new, silent motor, but not understand how to found them.
Trader say - "You need found 5-digit identificator". I see in  Bachmann store - five MDT Plymouth with different numbers (one o them i now have, but no success - old noisy motor inside).
How to identify MDT Plymoth with new can motor?

I received GP7 today. Yes, forward run its quieter than my best Kato locomotive (backward - bit louder). Not silent like freight car, but very good!
I like Bachmann DC/DCC decoder - i can use this loco on my analog (DC) layout without any modifications! Out-of-box run great!

Try with DC voltmeter. Standard red/black wires red is "+" black is "-" (Before test with some battery - AA or AAA size or other).
If digital voltmeter is displayed "-" sign before numbers - red/black wires is сonversely connected.
If zero or many fast changing values displayed - AC (not DC) on contacts.

Now i need switch to HO scale? Or for N scale E-Z app is used too?

If any engines stops - maybe problem is outside of this engines? Maybe power wires to tracks or power unit failed?

Sometimes we can change truck, but sometimes ...






Anyway - thanks for idea!

Yes, true.
I have some (Kato) locomotives. All have some noise. Best is Kato EMD SD-40. Others are louder.
I dreaming about most silent n scale locomotive.

https://www.youtube.com/watch?v=80xrDDIwG5U
something like this - can hear rails and wheels, talking people around, but not hear engines and gears.

I want push platform with camera before locomotive - any possible noise need suspend (not add noise).
Some time ago i try build silent pusher from Kato passenger car (with illumination). I mount little motor with propeller (from old Silverlit helicopter). This construction run without noise (wheels noise are higher). But force is low - even few degrees up track  and all stopped ...


Its coreless motor


.

Can You test them (Bachmann NV-2) for me? Maybe You can make some little video? (If this locomotive can run - not defective)

"matter of perception" - can i hear wheel sounds un track sticks - its can be criteria?

But Bachmann NW2 have coreless motor, GP7 only can motor (from item descriptions in Bacmann WebShop) - how you can explain - coreless motor are more noisy?

Really GP7 locomotive is most silent? Or switcher NW2 are quieter? Maybe another locomotive are better in this case? Maybe somewhat is GP7 owner an can tell real situation?

OK, MicroTrains couplers can easy installed on my Kato rolling stock, but Bachmann locomotives - how install MicroTrains couplers on them?

All my rolling stock have rapido couplers too And locos too ... Now what?