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Old 04-15-2019, 08:10 AM   #29 (permalink)
Andy from Sandy
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Join Date: Dec 2006
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There is two different tail hubs. On the 550 V3 the hub uses larger radial bearings and is stepped. The original hub is not stepped.

I have had thrust bearings lock up so the grips do not self centre when spooling up.

I have had hubs that was slightly over sized and the bearings didn't go on effortlessly requiring a polish with 1000 grit paper to take them down in size.

Tail wag:

Check the diameter of the tail output shaft. It is 5mm but the slider has 5mm bearings so doesn't always run back and forth smoothly. Polish output shaft down to 4.90mm using 1000 grit paper to not leave any marks on the shaft and see how that works.
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