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Old 02-21-05, 12:01 AM   #1
fixedpip
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French h/s races replacable by standard h/s races?

I bought a beautiful old french track bike with a worn headset and am trying to work out my options. The race on the bottom cup is thrashed but the rest of the h/s looks ok.

Sheldon Brown had this snippet of info:
"If you have trouble finding a French headset, you can replace the bottom races with a standard headset, and keep the old parts on top."

I just wanted to see if anyone has done this and if there are any gotchas?

Also can someone tell me whats the best way to measure stackheight for a headset thats already installed?
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Old 02-21-05, 05:50 AM   #2
classic1
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Ahhhh, French threads, another reason (raison) to dislike the French.

It reminds me of the Renault (or Citroen or Peugeot-can't remember) that needed the engine removed to replace the battery.
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Old 02-21-05, 07:58 AM   #3
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Quote:
Originally Posted by classic1
It reminds me of the Renault (or Citroen or Peugeot-can't remember) that needed the engine removed to replace the battery.
As did one of the early Camaros (I think it was Camaro, perhaps an Olds).
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Old 02-21-05, 08:05 AM   #4
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Quote:
Originally Posted by fixedpip

Also can someone tell me whats the best way to measure stackheight for a headset thats already installed?
Base of crown race to top of locknut, then subtract out any spacers other than a thin one between the adjusting and locknuts + the headtube length. Alot of crown races are pretty generic for the cup and ball types so Sheldon is probably right with latitude for some oddball exceptions. I duo what the dimension for the french crown race is but ISO is 26.4 and JIS is 27.0. ISO cups are 30.2mm and JIS are 30.0.

Last edited by sydney; 02-21-05 at 08:12 AM.
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Old 02-21-05, 08:17 AM   #5
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Originally Posted by gmason
As did one of the early Camaros (I think it was Camaro, perhaps an Olds).
Another reason to dislike Americans then!???? I'm an equal opportunity generaliser.

In all seriousness, are any bikes still made with French thread?
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