TMCC Speed question

Nope, not normal.  Do other locomotives do it, or just this one?  If it's unique to one, you need to take a close look at that one.  I'd start with cleaning the wheels and rollers, and then lubricating things.  You may also have a loose connection to the track pickups that is randomly causing the slowdown.

 

Hey John,

 

It's the only engine that does this.  It will do this on both my small Christmas Layout and my permanent layout.  My permanent layout runs off Legacy and I change the engine to conventional for the Christmas Layout.  I will start cleaning and maybe clear the stall settings?

The stall settings shouldn't cause that, if cleaning and lube doesn't do it, I'd be looking at either mechanical binding or some electrical connection issues.  You may have to pop the shell off to check what's going on inside.

 

Ok will do ... Maybe some holiday snow or something like that made it's way inside the cab...I try keeping the snow away from the tracks but you never know.  Thanks for the advice.

After all the cleaning and lubrication, if it stalls and is not mechanically bound, sounds like a heat related issue with the motor driver board.  Or a motor not right, but it shouldn't recover that quick. G

Lubed the engine... am I suppose to be able to move the wheels by hand?  I can't...only when I apply power will they move.

You can only move the wheels by spinning the motor, you can't backdrive the gears in these.  Newer Legacy locomotives do have back-driving gears, I don't know of any TMCC models that had them.

 

I think taking the shell off and spinning the flywheel for a few revs of the drive wheels would be a good test.  You're looking for any mechanical binding.  I'd also look for any loose connectors, screws, or wire nuts.

 

Did not see any binding.  Made a test run.  Using my Legacy speed control if I go one or two it won't stop but will slow down in a couple of places.  If I have it on the third speed (14) it runs fast enough that it doesn't slow down.  Does that make sense?  I think I will hook up a test track on the ping pong table and see what it does there? What do you think?

Sounds like track more than engine, but you said you don't have this problem with other engines.  Hard to say.  Is this just TMCC, or does it have odyssey cruise?  G

Previously stated.

It's the only engine that does this.

Given that fact, I'd be looking at the specific locomotive.

well I cleaned the track and it appears she only slows down by two curves in the track? My two other TMCC engines are Atlas and I think they have speed control.  I didn't see Odyssey on this one?  Maybe that's why she runs this way?  Oh and my smoke unit quit working too.. oh boy.

Robert may i ask what is the item number of this engine

 

Alex

6-38644