kh hub

Which older KH20 frame do you have? Is it one made in Taiwan? Are you
sure your frame is designed to fit something other than a 42mm
bearing?

I think the KH20 frames that came with the standard square taper hub had
40mm bearing holders. But everything else that was made in Taiwan
should be 42mm.

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Yeah the hub is the cheapo square taper with the bendy
cranks(40mm-17mm-12mm).It's a 2003 model i think.

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marty - '72 dart

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One option would be to get the Torker bearings for the Torker DX. The
Torker DX bearings have a 40mm OD and a 20mm ID. Those bearings should
fit the KH/Summit hub. If you go this route I'd buy several pairs of
the Torker bearings (enough to last you several years) because I
wouldn't be surprised if those Torker DX bearings became hard to get in
a couple of years. You can order the bearings from any bike shop that
can get the Torker unicycles. The bearings aren't in the current
SBS/Torker catalog so they'll need to call to get the correct order
number and info. The bearings should be in the next catalog that's
printed.

Another option is the bearing shims that Scott Wallis is making so you
can fit a 37mm od x 20mm id x 9mm bearing in the frame.

See these two threads for details:
'Profile to KH' (http://tinyurl.com/3z5ol)
'Serious Torker Bearing help' (http://tinyurl.com/5ahgn)

Both those options are easier and safer than trying to machine the KH
frame to be able to fit the 42mm bearings.

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Thanks John, i didn't realise you could actually get 40x20mm bearings.I
work in a machine shop and the suppliers we use don't carry those sizes.

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marty - '72 dart

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