I have 2 DC C-628's, to which I add NCE D13SRJ's and they run smooth as silk. I added 3.5 oz of weight to them to improve traction. The problem has to be with the Tsunami decoders. It's cheaper to buy the DC version and add your own decoder (w/wo sound).
Jay
C-415 Build: https://imageshack.com/a/tShC/1
Other builds: https://imageshack.com/my/albums
I was at my LHS picking up my BLI 2-10-2 Hybrid and a customer returned 2 628's wwith Tsunami, 1 with a dead short and 1 that ran hot. They demoed 1 for me on dc and it ran intermittantly and blew the horn continously. Has anyone purchased any C628's how do they run on DCC? Thanks
Chris