I have two intermountain tunnel motors and they run so differently that I cannot put them together.[banghead]. Is the answer to this problem to simply change the start voltage until both units start at the same time? One starts at speed step one (creeps) and the other won’t start until 20. I don’t want them to jump but Would the momemtum effect take care of this?
Help please, I have been wanting these puppies together for some time now.
PS, one unit has a Digitrax and the other a NCE decoder.
The best thing to do is to use the same decoder in both models. Although you may get satisfactory results by tweaking the speed tables of each unit, using identical decoders makes it easier. The electronic components and circuit design of the H-Bridge (motor control circuit) differs from manufacturer to manufacturer.
Most (but not all) decoders offer Start Voltage, Mid Voltage and Max Voltage CV’s. Setting the Start Voltage CV should give you the desired effect. But you may find other differences between the locos as you increase the speed through the entire throttle range. Are the units broken in? They might even out on their own after a suitable break-in period.
Thanks cmarchan, When I put them in a consist the unit with the NCE will take off quite quickly yet the Digitrax just sit ther and barely moves. It reminds me of DC when one loco gets all the track power and leaves nothing for the other unit.
I raised the question in a thread about two weeks ago concerning different decoders and everyone here stated it does not matter ( thanks alo )[%-)]. I think you are correct, As much as I wanted to order another Digitrax ( I fried the second ), I also wanted to try the NCE.