I did a search of the forum and couldn’t find anything about this, so i figured I’d ask.
Can anyone explain in plain english how to set up speed scales in DCC? I have almost 20 engines now converted over from DC to DCC and have yet to change any of the CV value’s. Every engine works, but I know that the speed performance can be better.
I have printed a few suggestions from different members from the Atlas forum, but again, I’m rather new to this. Their suggestions sre a little above my head. Does anyone have any simple suggestions of what they do?
What brand of DCC system do you have? If you have Digitrax, Lenz, NCE, or Easy-DCC from CVP, you should look into the free DecoderPro software at http:\jmri.sourceforge.net. Depending on your system, you would need a cable or an interface to connect your computer. DecoderPro makes setting up the speed tables (which is what they are actually called - maybe that’s why there was no response so far, FYI) MUCH easier than trying to do it by hand.
To do it by hand, you have to program a value for each of the ‘places’ in the table. Those palces are stored in Configuration Variables (CVs) 65 through 95. To activate the speed table once you program it in, you have to take the current value of CV29 and add 16 to it to get a new value to put back in CV29.
Choose a’standard’ engine then mu a second engine. Adjust CV2 on the second engine until the two start at the same time and speed. The adjust CV5 so that they have the same top speed. Then adjust CV6 so that they have the same mid-range speed. I then also adjust CV3 and CV 4 to match the acceleration and deceleration. I have had beeter luck matching engines than using speed tables and adjusting CV 66 and/or CV95 for forward and reverse trim. With a little patience you can get 5 or 6 engines to run close together, but not coupled in close if not perfect unison.