Technical & Reference Section > Tech and Restoration

Straightening pushed in alloy skyway hub/rebuilding suntour coaster brake

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gary4130:
any of those tuffs for sale mate? got a coaster hub -just need the tuff to bolt it to  ;)

laidback:
Still trying to get my head around making some kind of puller for the hub.  I notice inside the hub is a plastic sleeve that the axle passes through. am i going to damage the hub if i move this around to get better access to the back of the flange? not too clued up with how these hubs are made up. Is it just two flanges riveted through the body of the wheel, and the sleeve places in the middle?

Also, can you tap the bearing race out from the back of the flange, or am i likely to damage the hub this way?

Sid1972:
Remove the spindle and bearing cups (tap these out from the inside) then u need a copper drive not much fatter than a screw driver, put this through the spindle hole so your placing it against the cupped hub on the inside and hit it with a mallet. You need to keep working round the hub in circles and keep checking the outer edge with a square or level.

This with marked the inside of the hub but you cannot see anything when built. If both sides are cupped turn it over to repeat the process.  ;)

laidback:
Thanks Sid!

Hub stripped down, I pushed the plastic tube out the way. I'm using a small cold chisel, which is knackered.  Taped up the flat end (the bit you strike with hammer) to soften it and avoid unnecessary damage to the inside of the flange. As it's old and knackered, i'm using the flat end against the flange.  It's taking a while, but i'm nearly there.  Looks pretty good by eye.  I'll get a small spirit level on it later and post up the results :daumenhoch:

Sid1972:
Told u mate, easy....  ;)

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