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Home made tandem Schwinn?

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Home made tandem Schwinn?

Old 10-07-21, 09:05 AM
  #1  
rcommbikes
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Home made tandem Schwinn?

Is this beast homemade or does the "0" showing on the head tube mean it's an experimental one off by Schwinn? We're guessing home made. It weighs a ton as you might imagine. Your thoughts?







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Old 10-07-21, 11:59 AM
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I was initially going to say homemade from the first pic, but those welds look too consistent with Schwinn's, making me lean toward one of theirs! My old Schwinn Varsity came in at 38 lbs which is what my Cannondale RT1000 is at. I can't imagine what that bike weighs. Maybe an employee lunch time project?
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Old 10-07-21, 12:42 PM
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It looks to be made up from different frames. The head tube and seat tube angles are different, and spacing between the top tube and down tube at the head tube is different. I would tend to mark it as a home made job.
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Old 10-07-21, 02:03 PM
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It really looks like 2+ frames cobbled together. the really long stoker top tube is very unusual for the era. I'm also ussing that the realive lack of bracing makes for a fairly flexible ride. I vote for homemade by a skilled brazer/welder -- get some air in those tires, take it for a spin, and let us know how it rides!
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Old 10-07-21, 03:43 PM
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That looks like 3 bikes to me. Guessing you’ll find a different serial number under each bottom bracket on that vintage of Schwinn.
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Old 10-16-21, 12:05 PM
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It’s definitely homemade.

they made a Schwann twin and it looks nothing like this.

no reason you’d design a bike with the orphan head tube in the back.

Someone did some
cosmetically nice welds though
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Old 10-29-21, 12:35 AM
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I would not say right away that this is handmade!Very professionally done.Bravo!
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Old 11-04-21, 06:02 PM
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Originally Posted by JohnFord View Post
I would not say right away that this is handmade!Very professionally done.Bravo!
so some well done welds just make it a well welded Frankenbike. No one designs that from the ground up on a clean sheet of paper.
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Old 11-05-21, 01:25 AM
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Given how long the wheelbase on that home-made tandem is, I would have completed a "triangle" from the bottom bracket of the "front donor bike" to what was the former steerer headtube on the "rear donor bike". Yeah, it would add even more weight but given the overall length of it, I wouldn't be too comfortable riding that down even small hills without an added bar there to complete the "triangle". I do like it. Grade A+ for creativity !!! Perhaps a B+ for execution!!
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Old 11-06-21, 09:14 AM
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My thoughts? Make sure Captain and stoker have good health insurance.
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