Rivarossi Challenger

[Anonymous]

Hope someone out there has an idea..... I'm stumped! My Rivarossi Challenger, (new model with can motor in boiler) has run flawlessly up until a day or two ago. I installed DCC in it 9 months ago and modified the tender pickups to provide additional pickup for the engine and eliminated all stalls on switches, etc. However, now when running slowly on an 18" radius curve the engine stalls and shuts down the DCC with a short just as it straightens out coming out of the curve to the right. It is fine going into the curve to the left and runs the curve itself just fine. If I run it at moderate speed, the engine will hesitate and blink its light but continue past its usual slow speed stall point on the track. It will do this with the tender disconnected and with the trailing truck removed also. This engine doesn't miss a beat on a 22" curve. I've rechecked all wiring and connections, repaired any that appeared the slightest bit suspicious and still no change.... All my other engines run the same track flawlessly whether DCC or DC, Diesel or Steam. Help!!!

[Anonymous]

There's an answer out there and I'm sure that master steam operator "NIGEL" has a recomendation.
Be patient, he may be working the extra board this AM..

Chuck Walsh

[nfmisso]

Ray;

set up some 18" radius track and a couple pieces of straight, and connect ONLY your multi-meter to the track, set to lowest ohm range (typically 10 ohms). The ohm reading should be infinity. Place the loco motive on the track; resistance should drop somewhat. Next slide the locomotive through the curve, watching your meter. It should drop to zero when the short occurs. Inspect with a magnifying glass.

Nigel