Linn Westcott and realistic control.

[Rick Mugele]

Guy, Randy,

Randy mentioned connecting the Blunt brake throttle to the Zephyr "jump port".  How does this work?

Also, when using the F7 brake, can the throttle be increased increase the stopping distance?

Thanks,

Rick

[rrinker]

 The Zephyr jump port simply takes the output of a DC throttle and uses it as the throttle control for a DCC address assigned to it. So the functioning would be whatever functioning offered by the DC throttle connected. It simply monitors the voltage developed across the output, same as a DC loco running on the track would, and it translates that into a DCC speed step. So if the effect of the throttle would be to increase the output voltage if the throttle lever was opened while the brake was applied, then yes, the loco would speed up. At a given throttle position and brake handle position, the voltage will be decreasing, so the loco will slow down. If the brake is increased, it will drop faster, if the brake is reduced, it will drop slower or if the throttle position is such that it would overcome the brake, the voltage would go up, so the loco would speed up.

                 --Randy

 

[Rick Mugele]

Randy,

Thanks for the update.  In digging through the archive, I found the October 1975 RMC with the Jack Burgess quarter-size cab control feature.  Jack used the TAT IV with Blunt brake circuits.  In the same issue was the second part of the Don Fehmann SST/7 which featured train and independent brakes.  I suppose either of these cabs could be plugged into the Zephyr jump port?

Thanks again,

Rick

[trainnut1250]

Rick Mugele

Also, when using the F7 brake, can the throttle be increased increase the stopping distance?

No,, increasing the throttle after the brake is applied has no effect.  In regards to the simulator that Jack Burgess built that you mentioned and your other thread about blunt brakes and throttles, you might contact Jack directly through his website:

http://www.yosemitevalleyrr.com/

I have seen Jack's simulator (pretty nifty) but i believe that it is not currently in use on his NCE DCC controlled layout.

Guy