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Old 07-14-11, 01:16 AM   #1
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Messy welds? - Schwinn Collegiate ca. 1975

I've just stripped down a craigslisted Schwinn Collegiate 3-speed English style bike and some of the welds and metal work seem very messy to me. I was wondering if the messy welds were because its a bargain model or if it was just the trend at the time (Pics 1 & 2). Funny thing is, where the head tube connects to the top tube and the down tube - those connections are smooth as silk - almost like they were cast together in that shape (Pic 3).

Anyone know more about this type of bicycle?


Pic. 1

Pic. 2

Pic. 3

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Old 07-14-11, 01:22 AM   #2
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The headtube was cast together - it was joined with a flash weld at the top and downtubes just behind the taper - you'll notice the irregularity in the tubing at those spots.

As for the tubing (and the headtube as well), Schwinn rolled their own; hence the cheap weld under the BB. Same for the dropout joints and the crimped clearance.

They'll take just about any abuse you can throw at them, but that's all they're good for.

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Old 07-14-11, 04:50 AM   #3
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+1 to what cudak888 said. There is a interesting article about the whole process on Sheldon Brown's site:

Kurt is also correct about the head tube, the weld is actually about 1 inch or so away from the head tube. Here is a drawing of a Schwinn head tube before it is joined to the frame:
|^^^^^^^^^^^^^^| ||
|......GO.BROWNS........| ||'|";, ___.
|_..._..._______===|=||_|__|..., ] -
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