what headset?

[BenG]

Hi
could anyone tell me what headset to use with:
- a Schwinn DX B6 Hornet
- a Columbia prewar frame
I have some 1" 1/8 to 1" reducers but they won't fit (as they did on a JC Higgins, and then I could fit a 1" headset)
I may be asking something obvious here but please bear with me, I live in France :roll: (where these bikes were never available)
Thanks a lot
cheers
beng

 

[sensor]

schwinn would be a 1" threaded headset ...as for the other i dont know......maybe someone else will though

 

[socal_jack]

Sizes for post war are mostly the BMX/OPC size, but the stem size varies slightly mostly in the top nut. For pre-ware I have seen some that would tak a headset closer to the 1 1/8" threaded cup sizes, however the steerer is still a 21.5/22.2mm without alterations to the inside of the head tube. I have an Elgin Oriole probably from teh 30s like that, way too big for 1", probably had a custom size will need massagin to use a 1 1/8" though. The pre-wars are definitely a lot looser on tolerances, you can really tell that WWII had a dramatic effect on manufacturing methods.


Steerer O.D. /Stem diameter(Steerer I.D.)/Crown race/Inside diameter Frame Cup

One Piece Crank (O.P.C.) bikes
1" /21.15 mm or 22mm/ 26.4 mm(sometimes 27mm on late model cruisers ISO size)/ 32.7 mm Used mainly on bicycles with one-piece cranks, also some early mountain bikes.

1 1/8"/ 28.6 mm)/ 1" (25.4 mm)/ 30.0 mm/ 34.0 mm

Check out sheldon brown's site for more info

http://www.sheldonbrown.com/cribsheet-headsets.html

 

[BenG]

Hi Socal_Jack
Thanks for your answer.
I like you avatar, can I see it full size somewhere on this forum?)
Cheers
BenG

 

[socal_jack]

Hi BenG,

The avatar is a shot from my RBBO2 bike below

http://www.ratrodbikes.com/forum/viewtopic.php?f=17&t=4417