I recently purchased a Lionel Legacy Polar RR GP7 that was brand new in the box. I tried running it on the club layout last night, and it ran, but with a noticeable stutter at certain points. I found the drive train in the rear truck to be binding periodically. Has anybody else had this issue with these locomotives?
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Jake,
Check the traction tires are not catching the truck. There were several posts about it being a issue on F units maybe your issue.
JohnB
Jake, if John's solution doesn't help look and see if the flywheels are rubbing on something or a truck is not mounted flush. It is a nice looking engine
Another place to look is for crap in the exposed gears on the trucks.
It's definitely a gear issue. It has lion drive trucks, so I pulled them off and rolled them individually. The rear one has a definite gear bind issue (nothing caught in them when I looked). In fact, I just removed the two offending gears to get through running on the Christmas display last night as a 3 axle powered engine and it ran great.
The traction tires were only part of the issue. My friend had some replacements he ordered on hand from when I replaced the too thick traction tires on his F7's, so that's all good.
I emailed Lionel and though not under warranty, they're sending me a new truck to fix the problem. Awesome service!
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