Ron Gurth wrote:
>I have aquired a late 80's (?) Mercier 300 frame that needs a
>headset. I understand the size of the headset may or may not be
>French. The head tube is slightly 'ovaled' at the top, but not
>creased, so it appears it can be 'rounded', but I cannot get an
>accurate measurement of the diameter. Any idea what size would be
>correct? This frame looks to have been built near the end of
>Mercier's existence.
You don't say anything about the fork...if it's a French threaded fork, you need a French size heaadset. However late '80s might put it after that era. If a standard 22.2 stem fits into the fork without a struggle, it's almost certainly an ISO.
If you're putting in some other fork, any ISO 1" headset will work. French headsets are only "wierd" where they attach to the fork. The parts that attach to the frame use the same 30.2 mm diameter as other bikes of the era.
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