On 05/11/2019 13:32, T i m wrote:
Using PWM, if we found a low level setting that might just allow an
older loco to roll along slowly but reliably, the same setting would
have a new loco going along at quite a rate!

I was having trouble like that. Then I got the magnets "recharged"...

Made a heck of a difference. Locos that ran slow and hot then ran cool
and fast.

Andy