it's a touring frame!

[sam]

Some time ago my mystery frame and another bike like it owned by another CABEr showed up.

Took another look at it yesterday and discovered mine is a touring frame designed for gears and mud guards. The last photo is of the other bike--a BSA racer.

 

[Iverider]

That's a cool frame. Any idea what the screw in the chainstay is for? Maybe a kickstand stop or something?

 

[sam]

That's a cool frame. Any idea what the screw in the chainstay is for? Maybe a kickstand stop or something?

That's the clue it's for gears---early derailleurs such as Super Champion or cyclo used a "door spring" that connected near the BB.

 

[TR6SC]

Clever!!