W
Werehatrack
Guest
On Mon, 27 Jun 2005 21:59:10 -0700, HP <[email protected]> wrote:
>
>My old bike has a freewheel that takes a 4-prong SunTour extractor. I
>tried it, and the result was that 3 of the 4 prongs on the freewheel broke
>off. I googled, and followed Sheldon Brown's advice and disassembled the
>freewheel. My problem now is that the freewheel core is totall smooth, and
>there is nothing for the bench vise to grip onto. Am seeking advice on how
>to remove the thing, as I have to replace a broken spoke (and have to
>replace the freewheel anyway). I've gotten some suggestions as using
>penetrating rust-remover solvents, but there is no rust. The thing is just
>torqued on really tight. I would appreciate any help.
If you have access to a bench grinder, grind a pair of flats on the
hub and grip it with a vice or really big pipe wrench to remove it.
Actually, a *good* pipe wrench may grab it anyway, without having to
do anything else. If you have access to a Dremel tool, grind a flat
in a convenient spot that will allow you to drive the hub
counterclockwise with a hammer and punch. Or use the Dremel to cut
almost all the way through it, and then split it with a hammer and
chisel. If you have access to an arc welder, just heating it up by
laying a bead on the bearing surface may loosen it enough to allow it
to come off. There are lots of options since you don't care if you
tear up the freewheel's remaining part in the process.
--
Typoes are a feature, not a bug.
Some gardening required to reply via email.
Words processed in a facility that contains nuts.
>
>My old bike has a freewheel that takes a 4-prong SunTour extractor. I
>tried it, and the result was that 3 of the 4 prongs on the freewheel broke
>off. I googled, and followed Sheldon Brown's advice and disassembled the
>freewheel. My problem now is that the freewheel core is totall smooth, and
>there is nothing for the bench vise to grip onto. Am seeking advice on how
>to remove the thing, as I have to replace a broken spoke (and have to
>replace the freewheel anyway). I've gotten some suggestions as using
>penetrating rust-remover solvents, but there is no rust. The thing is just
>torqued on really tight. I would appreciate any help.
If you have access to a bench grinder, grind a pair of flats on the
hub and grip it with a vice or really big pipe wrench to remove it.
Actually, a *good* pipe wrench may grab it anyway, without having to
do anything else. If you have access to a Dremel tool, grind a flat
in a convenient spot that will allow you to drive the hub
counterclockwise with a hammer and punch. Or use the Dremel to cut
almost all the way through it, and then split it with a hammer and
chisel. If you have access to an arc welder, just heating it up by
laying a bead on the bearing surface may loosen it enough to allow it
to come off. There are lots of options since you don't care if you
tear up the freewheel's remaining part in the process.
--
Typoes are a feature, not a bug.
Some gardening required to reply via email.
Words processed in a facility that contains nuts.