I need a 1" steer tube for a custom made fork and the 2 vintage forks I have now do not have the larger diameter at the base where the bearing race sits. These older forks use shims to hold the race in place, I have some 1" tube with .125 wall and a 1" die to thread it, are shims ok or do I need a steer tube with correct race diameter?
Steer Tube - Bearing Race
- Thread starter Jay Driggars
- Start date
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99% of 1" bicycle forks have either a 26.4mm or a 27.0crown race seat. The trick is to figure out which your fork takes, and buy a crown race the right size. This can be difficult if you're running a sealed/cartridge bearing headset, but is much easier for loose-ball. I recently did an order with porkchopbmx.com, and got a hand full of crown races just so i'd have both sizes on-hand. (They tend to call the 27.0mm "JIS" and the 26.4 "ISO", but I've found both sizes on older American bikes, so.... good to be prepared.
http://porkchopbmx.com/Bicycle-Headset-Fork-Crown-Race-for-VP-H755-headset-270mm-HSIMH755CR-270.htm
and, a sealed-compat one, but you're rolling the dice if you're not running a NECO headset:
http://porkchopbmx.com/Bicycle-Headset-Fork-Crown-Race-for-SEALED-1-headset-270mm-HSIMH671CR-270.htm
Seems like most headsets ship with the 26.4mm race, unless otherwise specified as "JIS" or "27.0"...
HTH
http://porkchopbmx.com/Bicycle-Headset-Fork-Crown-Race-for-VP-H755-headset-270mm-HSIMH755CR-270.htm
and, a sealed-compat one, but you're rolling the dice if you're not running a NECO headset:
http://porkchopbmx.com/Bicycle-Headset-Fork-Crown-Race-for-SEALED-1-headset-270mm-HSIMH671CR-270.htm
Seems like most headsets ship with the 26.4mm race, unless otherwise specified as "JIS" or "27.0"...
HTH
