This is a topic that is of great interest to me at the moments, as i changed to DCC about 15 months back, and when purchasing my equipment (Lenz LH 100) had no idea that my existing older stock of locos with 3 pole motors, would struggle on DCC, I have looked for replacment motors to upgrade to 5 pole, which it appears is a must if good smooth running is required, but so far with no luck, is there a market for replacment motors on older locos? or, are the manufacturers thinking of producing a chip for operation with 3 pole motors? there must be thousands of 3 pole motors on layouts just waiting to be converted, I got 25 of them sitting in the sheds waiting for a major overhaul. I would like to see them running with DCC any ideas???