On 24/01/11 05:37 PM, jim sikking wrote:
> All,
> I recently acquired a 22.5" 1982 Trek 613 and when inspecting the headset was surprised to see an arraignment similar to a bottom bracket lug. I can see it as a time saver, no mitering required! Did this become popular with frame manufacturers or just a Trek thing? I've never cut up a production frame, but now I wonder in general how much precise mitering was done, even on frames with all real lugs.
>
It wasn't just a Trek thing, I have a couple of Jim Miele "Bianchi" bikes from around the same time frame with one piece head tubes with false lugs. I believe these bikes were sourced in Japan.
One of the bikes is in pieces, so if anybody is interested I can dig my way down to the cellar and attempt to snap some fuzzy pictures of the interior and exterior of the head tube.
Marcus Coles
London, Ontario, Canada.