Humph: Okay so I have made the upgrade to DCC...Almost. From my Great Eastern trunk, I would like to thank all for your help along the way. Starting with completing my track work thru switches and now I have taken your advice and gone DCC. The only problem so far as I can see is the loco only goes half as fast as it did with DC. Sure its cool and much more realistic, but this loco goes twice as fast in DC. Any input on how I can speed up the loco on my Great Eastern trunk. Could it be an adjustment on the throttle itself. I just cant seem to get it to go past half speed no matter what I do. (Chitty)
We're really going to need more information.
What DCC system? What scale and engine?
Decoder model if available?
What DC power supply were you using before the change?
Chitty Chitty The only problem so far as I can see is the loco only goes half as fast as it did with DC. Sure its cool and much more realistic, but this loco goes twice as fast in DC.
The only problem so far as I can see is the loco only goes half as fast as it did with DC. Sure its cool and much more realistic, but this loco goes twice as fast in DC.
I guess I don't understand your problem, Chitty. Are you used to running your trains flat out?
The beauty of DCC is that you can adjust the top speed of your locomotive so that it runs prototypical. Your DC power pack probably had an output of 18-19V. Most DCC systems run in the 12.5-14.5V range so your trains won't run as fast - about a 1/3 less.
Tom
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Time...It marches on...without ever turning around to see if anyone is even keeping in step.
Is there Decoders in the engines you are running? On my Digitrax Super Empire Builder I have 3 power settings. N Scale, HO and O/G. If I set it to N scale (I am HO) it cuts my speed by about a 1/3rd.
Cuda Ken
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I had a similar problem with a Digitrax DZ125 decoder I installed. The fix was to turn off BEMF by setting CV57=0. When CV57 was 0, the motor output (and speed) doubled.
Did you buy the loco with DCC already installed? Did you install it? Did someone else install it? What brand of decoder?
One other thing to look at: CV3 (acceleration) - a high setting will take several minutes for the loco to reach full speed
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Forget what the locos did when operating with DC if the speeds with DCC are close to prototypical.
Below is a link to measuring loco speed.
http://home.cogeco.ca/~trains/rroperat.htm
Rich
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.