Engine stops quickly

The classic ERR Cruise Commander in this one?  Did you measure the gear ratio of the Chuggington trucks to see what they have?

yes, classic Cruise,  I did not measure the gear ration of the Chuggington trucks.  Would it be the number of turns of the motor to turns of the wheel?

Yep, put a mark on the flywheel and just count the turns for a complete rev of the wheels.

Both engines have a 9:1 ratio.  The original engine has Cruise and the engine with the Chuggington motor has an old AC/Dc commander I had lying around.  Also the fly wheel on the Chuggington motor is about 1/2 the size as the other engine.  If you think it is the difference in electronics can they be made to work together?

Check to confirm the rev level of the radio boards is the same. I had some early boards that exhibited the abrupt stop. 

Lou N 

the rev of the cruise commander is 4.1 and the AC/DC commander is 5.2.

What command base are you using?  If using the Legacy CAB2, what control mode are you running in, TMCC, CAB1, R100?

One thing that happens is in CAB1 or R100 mode with the ERR boards in 100 step mode, a quick twist of the big red knob will bring them to a sudden stop.  Also, if you change directions, that will result in an immediate stop.  Also, in the relative step mode, there is no momentum applied, so you get immediate response to speed command steps.

using cab 2.  will try different settings and see what happens.  No matter which mode the engine behaves pretty much the same.  If you change direction or turn wheel to stop engine it occurs very quickly, not as smooth as other engines.  Also changed momentum settings and same results. I have got to think it is either the board or smaller flywheel on this engine.

I can't duplicate that, even with my little RMT BEEP with a Cruise Commander Lite.  if I get it going at a decent clip and then SLOWLY reduce the speed, I can bring it down very gracefully to a smooth stop in either CAB1 or R100 mode.  FWIW, the RMT BEEP has no flywheels, so it's not a flywheel issue.  It's also not clear to me how the board could do that and still function otherwise.

I can get it to a slow stop if I slowly reduce speed, I tried this in R100 mode.  However, if I do quickly reduce speed or change direction the stop is much more abrupt.  The abrupt stopping is a problem if I double head this engine with the other genesis which responds more smoothly.

martind posted:

the rev of the cruise commander is 4.1 and the AC/DC commander is 5.2.

The rev level i mentioned was for the radio board (R2LC).  Like R2LC09 or R2LC06.

Lou N

thanks Lou, will check the R2LC later today

If those are the boards that came with the ERR stuff, I don't think they've ever shipped anything but C08 boards, used to be R2LC-C08, now it's the R4LC-C08.

Board is R2LC-08.  Tried a different board and same result.

martind posted:

Board is R2LC-08.  Tried a different board and same result.

OK then my problem with abrupt stop was from different radio boards. Sorry I couldn’t help. 

Lou N. 

John and Lou,

I think my next move will be to switch the boards into the other engine and see how they  run. That should give a good indication if its the board or motors. That project will have to wait for a few weeks but thanks again for your help