Good day everyoneI recently purchased a Atlas Dash 8 with a QSI TITAN decoder inside.I can't build a consist with this locomotive in it because it's behave differently from other decoders.I tried "speed matching" without succeed (under RTC and STC) with CV's 2,3,4,5,6,23,24. Turn off the RTC to STC makes the locomotive looses smoothness at all, make her even more difficult to match.Even also tried copying speed tables from the locomotives i'd like to run with it.Just want to make up a consist with an sd40-2 with an Loksound in it.I Also attempted to the Loksound behave like the QSI Titan... without succeed either.
You probably want the QSI in RTC, otherwise it effectively has no BEMF. RTC also includes a decent amount of momentum, so you may have to adjust CV3 adn CV4 on the Loksound. Loksound usually do not come with a 0 momentum so you get some engine rev before the loco moves but it may be less than what QSI sets with RTC. You can't always directly compare values between decoders though.
You don;t have to have everything in lockstep, and if you don;t just crank the throttle wide open you can get away with a lot of mismatch and still not haev one loco spin its wheels. The best way to configure this stuff is to consist them but not couple them. Start at step 1, if RTC is on in the QSI then they both should start moving, but if one is delayed a bit in moving, add a little to CV3 on the one that started sooner. If one is faster, add some to CV2 on the slower one. If you haev the room, try full throttle next. If one is faster than the other, adjust CV 5 on the faster one to slow it down - you can't make the slower one any faster. FInally try mid speed, if one is slower you can speed it up by adjusting CV6 or you can slow down the faster one by adjust CV6 on it. Also try running full throttle and then shutting off the throttle - if one slows down quicker than the other, add some to CV4 on the one that stops quicker.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
Also make sure you are using Advanced consist mode and not dual or universal consist mode. To take advantage of the consist CV's CV19 has to be programmed to the consist number you are using. This will put it in advanced consist mode. (Not every command station puts you in advanced consist mode by default)
Don - Specializing in layout DC->DCC conversions
Modeling C&O transition era and steel industries There's Nothing Like Big Steam!
Thanks DG. This didn't work either.I found information about "expert level" dcc users who have also tried make her to behave, without success.