I was a huge QSI fan until I put a Loksound micro in my P2K S1, and tweaked the settings. I just couldn't believe how realistic the RPM to movement relationship was. It revs up before moving, notches and falls back down, and the RPMs fall well before the loco slows to a stop.
I tried for hours and days to get my brand new BLI NW2 to behave in a similar fashon, but it just wouldn't do it. The thing that irritates me the most, is that after you cut the throttle, the RPMS stay up until after it's stopped. Very unprototypical IMO.
That pretty much made my decision to standardize as much as possible on Loksound for diesels, even at the rather steep price. I haven't got a Revolution, yet, but price is close. Thw QSI steam stuff is still great. I have kitbash steam projects that I'll try the QR in. So far I'm not entirely keen on Loksound steam.
I just got an E-mail from Litchfield Station tonight that they are shipping the QSI Revolution decoders now. This is a long time coming. It will be interesting to get some feedback from from folks as they deploy them in their fleets.
Engineer Jeff NS Nut Visit my layout at: http://www.thebinks.com/trains/
A 1:1 scale SD40-2 should transition around 22-30 mph, depending on age, and how the circuits are set up. The newer ones transition later. With 25 mph track speed, many times you are going in and out of transition. Usually going into notch one at any speed will cause it to come out of transition.
I think it would be neat on a ESU decoder, if you take the throttle to full from a stop (on a turbo EMD), you would hear the engine try to wind up, choke, die, alarm bells ring and the engine stop. Not sure how much programming that would take.
Mike WSOR engineer | HO scale since 1988 | Visit our club www.WCGandyDancers.com
Desiels transition at a certain speed. My NW's do it at about 18 mph or so scale. It has to do with changing how the electricity runs across the traction motors.
I use heavy momentum settings to "Load" the engine before it starts to move.
Would a momentum adjustment do it?
Rotor
Jake: How often does the train go by? Elwood: So often you won't even notice ...
I have a Athearn BB SD40-2 in which I have installed a LokSound decoder. At speed step 1, you hear the engine notch up and then the locomotive begins movement. My question is can this same performance be achieved on my Atlas Gold B30-7 or any QSI equipped loco for that matter? The short delay between change in engine sound and movement really adds to realism.
Thanks,
Bruce