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I was looking for some information on N scale wheelsets. In particular, what size wheels are used on what cars. I have a couple of Athearn tank cars. These are large LPG cars and I would expect them to have 36" wheels. I have a couple of Intermountain 4750 cu. ft. covered hoppers. These are 4750 cu. ft. covered hoppers. These are large cars, and again I'd expect them to have 36" wheels. But the wheels on the Intermountain cars seem smaller than the ones on the Athearn. I'd like to change the wheelsets on the Athearn cars and I want to be sure I order the correct ones. Also, I've been told that Micro-Trains uses 34-1/2" wheels on all cars. I've also been told that wheelsets from different manufactuers have different axle lengths. If anyone knows anything about these wheelsets, I'd appreciate getting some information. Thanks
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