Sid I am going to work on a related reply in another thread today and put it under the "What's on your workbench" thread. A project that I have been working on for a couple of months I wanted the 21:1 gearbox out of my Williams L1s Mikado to put in my J so I transferred the 42:1 into the Mikado. I first put a Maxon coreless motor in the chassis and it really ran fine with zero motor noise but I had a difficult time mounting a flywheel on it and I wanted to put a tach reader on the flywheel. I removed the coreless and put a Mabuchi 385 rated at 2 ohms static and 12,500 at 12v that would give a stall current of 6a at 12v which is right on target for most TMCC motor driver boards. First time I read your original post I missed the 11a stall on your Mabuchi. That is playing with fire for most motor driver boards and is about the same static resistance as the original motor. Your motor would have a static resistance of about 1.1 ohm I think the one I pulled from my J was .9 ohm. WHAT WERE THEY THINKING ? $. That kind of current draw eats pick-up rollers as well as your track. I will try and get the post up before I go to bed tonight, earlier if possible. j
|
|
