Pete (ski) - when it first came out you did one of your write-ups on the Aerotrain, and posted it on the Atlas Forum. It's still there, but without the photos. You pointed out that the coach wheels are narrow in gauge and this is hard to fix. I have an idea on how to fix the gauge of the coach wheels. I'm going to try it on mine - basically, get some new metal wheelsets with the right axle length (I have to figure out what that is), and do one of two things:
1. get twice as many one-side insulated wheelsets, but cut the axles and only use the non-insulated side along with the axle bushings already on the Aerotrain.
2. same as 1, but use the insulated sides too - doesn't waste as many wheels, but only half the wheels will pick up electricity.
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CRUD - just measured the axle length - it's 0.525". I don't think anyone makes that length as a stock item.
The wheel's are scale 33" at least (which is correct).
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Fox Valley lists a 36" wheelset with 0.526" axles, but no other diameter.
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I think I can use any old axle length, and just pull the wheel out along the axle a bit after I cut the axle in half. I just need to figure out a reliable way of getting the wheel position just right (some kind of jig I suppose).