Using a roller test stand with DCS question

I tested it again this morning and discovered something interesting. This time I took the engine off the rollers and put it directly on the track mounted on the roller stand (in front of the rollers). The direction commands worked correctly. Put it back on the rollers and again the direction was reversed. So......perhaps it had to do with DCS signal going through the rollers themselves and getting altered?

Roger

Are the engine wheels turning Clockwise or counter clockwise when on the roller?  I don't think the roller has anything to do with this.  G

George,

When placed directly on the test stand track (but not on the rollers) and I turn the thumbwheel to make it go forward, the wheels turn clockwise. When I put it on the rollers and turn the thumbwheel, the wheels turn counterclockwise. ???

Roger

Roger, I've tested tons of PS/2 and TMCC/Legacy locomotives on my rollers, I've never seen anything like that, and I can't imagine what phenomenon could cause that to happen.

John,

And you won't.......my silly mistake. Just went down there again. It was easier to see the rollers than the wheels, so I used a narrow beam flashlight. The roller system works like gears. Main gear turns in one direction....connected gear turns opposite. The train wheels were going clockwise, rollers counter. All is good.   Love this roller system, though.

Roger

I was going to suggest that, but I thought better of it, I figured it might be taken as an insult.

Nah, I deserved it. Silly mistake. Much appreciated.  I couldn't imagine why all functions worked correctly, but direction was backwards. Wrong.

Roger

My question was the subtle way to get you to look again. 

I realized that.....it's exactly why I went back down there. I said to myself.....was I looking at the roller or the engine wheels?  Fine move, self.

Roger