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Surging 38 ton shay
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tommygunner
Surging 38 ton shay
«
on:
October 02, 2007, 07:36:59 PM »
My 38 ton shay has a surge mainly slow speed forward on 8' dia. curves, reverse runs much smoother & straight track smooth too. Track Is good Loco is lubed and broken in couple of hours. I heard that the problem might be overly long screws on truck side frames that are touching gears on inside of power trucks. Anyone have any insites on this problem?
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Curmudgeon
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Re: Surging 38 ton shay
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Reply #1 on:
October 02, 2007, 08:23:31 PM »
Never, ever seen overly long screws in sideframes.
However, for 11 years I've been fighting this.
Single-lead worms and worm-lock.
Unequal motor speeds exacerbate the issue.
Try a downgrade with 20+ cars.
I have opened motors, shimmed armatures, different lubes, nothing fixes it.
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