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Reply to "Binds on curves"

I guess I was not clear I was not inferring the trucks did not rotate freely but rather when they rotate beyond a point are the wheels rubbing on something? If the wheels don't rub on anything I would look to not enough end play in the axles.  Something I would look at, is the distance between the wheels on their axles on the trucks that don't bind up vs the distance between the wheels  on the trucks that do bind up. Last I would remove the side frame on one side of a truck that rolls free in the curves and on one of the trucks that binds up. Measure the length of the axles that bind vs those that run free. Would be best to have a caliper to do this measurement as a few thousanths can make a difference.   Harbor Freight has a cheap digital caliper that I understand is serviceable .   With a car upside down set a section of track on a truck and roll it it back and forth compare good trucks with those binding.             J

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