Square taper BB without shoulder on the cups?

[NHAero]

Are there other JIS square taper BBs besides Phil Wood that have shoulder-less cups that allow some fiddling with the left-to-right positioning of the spindle?

[oldpotatoe]

Originally Posted by NHAero

Are there other JIS square taper BBs besides Phil Wood that have shoulder-less cups that allow some fiddling with the left-to-right positioning of the spindle?

Don't think so..I google-fooed that but didn't find one.

You CAN use Phil cups on a UN-72 BB tho...done that before.

[NHAero]

That's an interesting hack, Peter - thanks so much, will take a look at that since I have both.

Originally Posted by oldpotatoe

Don't think so..I google-fooed that but didn't find one.

You CAN use Phil cups on a UN-72 BB tho...done that before.

[AngryScientist]

that IS a good hack. good to know!

[cmbicycles]

Could just remove the shoulder from a shouldered bottom bracket. Probably just a few minutes with a file would be all you need... might not be pretty depending on skill, and make sure its an aluminum cup rather than steel. You could also run into the same issue with Phil BB's in that you need two splined tools to keep the individual sides from turning while installing.

[HTupolev]

Originally Posted by NHAero

Are there other JIS square taper BBs besides Phil Wood that have shoulder-less cups that allow some fiddling with the left-to-right positioning of the spindle?

I think the Velo Orange ones might be. They also sell BB spacers.

[oliver1850]

There were a number of companies making adjustable spindle BBs 25 years ago. American Classic, Bullseye, Grafton, Cook Bros., Paragon, Sampson, Specialized, Stronglight, Syncros, Tioga, TNT, and White Industries all made them. Most of these used adjustable cups with lock rings on each side to allow lateral adjustment. The Cook and White BBs used fixed cups with a spindle that could float, locked in position with set screws. Most had Ti spindles and were priced in the $130-150 range in 1994. Many were offered in 6 or 7 spindle lengths, the Syncros 9. Here's a Syncros:

https://www.ebay.com/itm/RARE-SYNCRO...JVh~:rk:2:pf:0

[nesteel]

Vintagey options would be a Suntour that used sealed bearings (mid '80's), and a Galli roller bearing unit (not sure they made this one in JIS taper)

[Ralph]

I've got an old 111 Campagnolo Centaur (or is it Athena?) BB on one of my bikes. No fixed cup. Like a PW. Can move from side to side a little. Not JIS. See them on E Bay still time to time.

[NHAero]

You folks are a great historical resource!
I'm going to fool with the Shimano BB and Phil Wood cups tonight, that's a simple low cost solution. Then I may look for more obscure vintage products. I'm hoping for a 103mm spindle, and I think there were Dura Ace 103mm BBs in the UN format.
Thanks!

[Joxster]

Something like this???

https://www.ebay.co.uk/itm/Mavic-610-bottom-bracket-for-631-chainsets-or-similar/254010949305?hash=item3b243b7eb9:g:vusAAOSw-ghcBcE0:rk:2f:1&frcectupt=true

[Spaghetti Legs]

Originally Posted by Ralph

I've got an old 111 Campagnolo Centaur (or is it Athena?) BB on one of my bikes. No fixed cup. Like a PW. Can move from side to side a little. Not JIS. See them on E Bay still time to time.

Yes the circa early 90’s Athena do but they are Campy/ISO taper. Check out Velo Orange as noted above, I’m pretty sure they have one.

[oldpotatoe]

Originally Posted by Ralph

I've got an old 111 Campagnolo Centaur (or is it Athena?) BB on one of my bikes. No fixed cup. Like a PW. Can move from side to side a little. Not JIS. See them on E Bay still time to time.

Athena.....

[oldpotatoe]

Originally Posted by nhaero

you folks are a great historical resource!
I'm going to fool with the shimano bb and phil wood cups tonight, that's a simple low cost solution. Then i may look for more obscure vintage products. I'm hoping for a 103mm spindle, and i think there were dura ace 103mm bbs in the un format.
Thanks!

un-91...

[oldpotatoe]

Originally Posted by Joxster

Something like this???

https://www.ebay.co.uk/itm/Mavic-610-bottom-bracket-for-631-chainsets-or-similar/254010949305?hash=item3b243b7eb9:g:vusAAOSw-ghcBcE0:rk:2f:1&frcectupt=true

Those pretty much required the BB shell be faced at a 45degree angle. Mavic even made a BB facing tool for just that. Otherwise the lockrings wouldn’t grab a lot of threads on the BB.