Sorry guys, didn't mean to muddy the waters. I realized I'm not 100% clear in this still. Max, I think this is the post I mis-remembered:
Hi Pete
Sorry for the confusion, the decoder was a V4 L (not XL), and for what ever reason, it didn't like the BEMF on either of the Pittman motors. My weapon of choice is the Select L, for various reasons. Bryan at SBS4DCC.com swapped the V4 L for a Select L and the Select only causes marginal moaning from the motor. Easily masked by the sounds from the decoder - as was the Atlas' moaning (with a Select L).
The L series was developed by ESU during 2014 specifically for O scale, but given that there are so many Atlas and Pittman motors out there, its performance in the motor area is a bit below par. Not to worry, I think that it will be acceptable.
So to double check, you didn't have the Pittman back EMF issue with the XL 4.0 (big one with screw terminals at large caps)? And you came to the conclusion that the new Select L with the blue PCB and plug-in loco interface board is acceptable hum/control-wise even with Pittman?
By the way, I looked into coreless motor replacements for the Pittman and found that I can get a drop-in replacement that will draw under 1A stalled and deliver twice the torque with better slow speed control. The cost will be the same or less for this and an HO Select decoder together than for one high amp Select L. Plus I'll have more room for speakers. Going to try this in an old Weaver as soon as funds permit.
Thanks again,
Pete
