Bachmann says the (recommended) dia. curve for the 55 ton is 7 ft, but wat is the minimum that it can run on without modification (i have 5 ft dia curves.
Greg,Gary, I actually had the same question as Kevin, 4 foot radius should have been fine, I've seen them on tighter curves.
That seems wrong somehow, I've seen 2 truck ones on very tight curves, but I have not personally run a 3 truck on tight curves.
Greg,Gary, I believe you. That is quite surprising considering the performance of the 2 truck. Can you comment on why you think this is?
I'd be guessing the third truck coupling or drive or both.
Always ready to learn, and there's no better knowledge than your first hand knowledge.