Super Sport 650b retrofit?

Can anyone tell me if a 650b wheel with a 42mm tire will clear the chainstays on a ('70s era) Schwinn Super Sport?

Also, what would be the brake reach requirement for such a setup?

Thanks in advance for any insight!

The brakes will never reach. They will just reach a 700c/622 rim if that helps any. I also doubt if the fork is wide enough. The Chicago SSs came with 32mm tires. Roger

rhenning said:

The brakes will never reach. They will just reach a 700c/622 rim if that helps any. I also doubt if the fork is wide enough. The Chicago SSs came with 32mm tires. Roger

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Thanks for the reply, Roger. Yeah, the original brakes clearly won't reach a 650b, but I've got a pair of Tektro R559 that reach to 73mm, and was hoping to employ them in this hypothetical build.

I gave away my last SS to my niece, otherwise I'd slap some wheels on it to find out, but I seem to recall that the limiting factor is the chainstay width. However, with the shorter wheel, the clearance widens as the stays diverge, so I'm thinking it just might work.

As to the issue of front fork clearance, would anyone have a SS on which they could measure the fork width inside dimension?

Thanks, folks!

SS

At the center plane of the brake pads it looks like 2".

stpeteschwinn said:

At the center plane of the brake pads it looks like 2".

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Thank you, sir; that'll clear the tire (Gran Bois Hetre), which measures about 1-1/2" wide.

Is it possible to make a guess about the chainstay clearance?