I know there's been lots of frustration about bearing holders in frame
making. I've been through my fair share of it... I normally advocate
machining your own, but if that's not an option, I've figured out an
alternative. It's not perfect, but it'll get you ready to throw a frame
together if you want.
Search for "shaft collar". You will want to use the 2-screw shaft
collar. It will give you options for materials, dimensions, etc. Pick
the most important aspect of the bearing holders you need... this is
generally the material. Then go from there. They aren't particularly
cheap, but will get you going. For an idea of cost, a set of two 1-5/8"
ID aluminum shaft collars is ~$33. They have metric shaft collars
aswell, however they're only in steel and stainless.
Ideally you have access to a lathe to bore the collar to a good
retaining sholder, however if that's not the case you should be able to
order to size.
I thought I'd provide this link since I've personally been through so
much frustration designing easily made bearing holders.
--
gerblefranklin
http://gallery.unicyclist.com/Trials-Muni
Nick's main man.
"I love freedom dearly, ideally, in theory, but in reality we're not
there yet--Not nearly."--Cold Duck Complex
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