06-04-2009, 09:01 PM
My apologies for a decidedly small amount of DCC knowledge...but I've re-read the manual, and there's nothing that I can decipher telling me step-by-step how to adjust the speeds. Right now, it's like someone threw a calculus book at me and said, "solve this equation." There's paragraphs discussing the "speed tables" and various values for many CV's, but it's still greek to me. I'm at the point where I need to write Digitrax directly for pointers. There's a forum group devoted to Digitrax products that I'll try too. Hopefully, someone has walked down this road before and cracked the code, and can explain it to me step-by-step since I'm just not seeing how to solve this programming procedure.
Thank you for your idea though...I will give it a try. What do you mean by "speed step 1 then 10 then 20"? Are you talking CV values or throttle positions? Do you run a single engine over a fixed distance to get a speed (like a scale miles per hour)?
It makes the most sense to me to measure the distance between two points on the layout, run the engine at a set throttle position, time the engine between the two points and record the scale speed. Then do it all over again for several other throttle positions. Once you have that down for one engine, do it for another engine and adjust the CV values (which I don't know how to do or which ones to change) so that the engine covers the same distance in the same amount of time at the same. So if they're MU'd together, they'd run well with each other.
If I decide to have almost all my engines run at exactly the same speed, wouldn't they all be "matched" and capable to be MU'd without uncoupling due to speed differences?
Thank you for your idea though...I will give it a try. What do you mean by "speed step 1 then 10 then 20"? Are you talking CV values or throttle positions? Do you run a single engine over a fixed distance to get a speed (like a scale miles per hour)?
It makes the most sense to me to measure the distance between two points on the layout, run the engine at a set throttle position, time the engine between the two points and record the scale speed. Then do it all over again for several other throttle positions. Once you have that down for one engine, do it for another engine and adjust the CV values (which I don't know how to do or which ones to change) so that the engine covers the same distance in the same amount of time at the same. So if they're MU'd together, they'd run well with each other.
If I decide to have almost all my engines run at exactly the same speed, wouldn't they all be "matched" and capable to be MU'd without uncoupling due to speed differences?
Mark
Citation Latitude Captain
--and--
Lt Colonel, USAF (Retired)
Citation Latitude Captain
--and--
Lt Colonel, USAF (Retired)