Best you can do is set the speed to speed step 1 and adjust CV2 until it moves at the slowest possible speed. That will be as slow as it posisbly can go. To get it any slower would require a different motor and/or gears. Use Ops Mode programming on the main to adjust it. If your DCC system isn't such that it has a throttle which will display the exact speed step, use the JMRI throttle. Adjusting the momentum will slow down how long it takes to get from minimum speed to the set throttle position, but can't make it run any slower.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
rrinker Best you can do is set the speed to speed step 1 and adjust CV2 until it moves at the slowest possible speed. That will be as slow as it posisbly can go. To get it any slower would require a different motor and/or gears. Use Ops Mode programming on the main to adjust it. If your DCC system isn't such that it has a throttle which will display the exact speed step, use the JMRI throttle. Adjusting the momentum will slow down how long it takes to get from minimum speed to the set throttle position, but can't make it run any slower. --Randy
Spent the morning playing with decoder pro
ended up with speed step 1 set at 5 and speed step 28 set at 90
with Acceleration and braking rates set at 20
runs much better now top speed looks like 50 scale miles per hour
TerryinTexas
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http://conewriversubdivision.yolasite.com/
C&O Fan rrinker Best you can do is set the speed to speed step 1 and adjust CV2 until it moves at the slowest possible speed. That will be as slow as it posisbly can go. To get it any slower would require a different motor and/or gears. Use Ops Mode programming on the main to adjust it. If your DCC system isn't such that it has a throttle which will display the exact speed step, use the JMRI throttle. Adjusting the momentum will slow down how long it takes to get from minimum speed to the set throttle position, but can't make it run any slower. --Randy Spent the morning playing with decoder pro ended up with speed step 1 set at 5 and speed step 28 set at 90 with Acceleration and braking rates set at 20 runs much better now top speed looks like 50 scale miles per hour
I shot some video of it
In this scene the throttle is set at 50% and to start the loco i just flip the direction switch to forward
and the loco starts it's self using the momentum programed in
I think it's pretty close
http://www.youtube.com/watch?v=JVy-diKH2Qk
Yup, better than the first vid. Probably the best you can do without swapping motors, or regearing it. Hard to tell in digitized videos sometimes, but it seems liek the chuff rate is too low. A basic 2-cylinder steam loco will have 4 chuffs per revolution, at the speed it was runnign at the end they'd probbaly almost completely blend together. There should be a CV or two that can tweak the chuff rate based on speed, even without adding a cam (which is the only way to get it absolutely correct at all speeds - be that a wheel cam or one on the motor shaft calibrated to the gear ratio and wheel size). Best bet is to usually get it right for slower speeds, because that's when peopel can actually count wheel revolutions.
rrinker Snip Best bet is to usually get it right for slower speeds, because that's when peopel can actually count wheel revolutions. --Randy
Snip
Best bet is to usually get it right for slower speeds, because that's when peopel can actually count wheel revolutions.
Yep I agree after a Scale 20 MPH the wheels are a blur
Here's a short clip of a passing shot on the bridge
The chuff seems right to me
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