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Old 07-18-19, 12:32 AM
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Bikes: Ron Cooper touring, 1959 Jack Taylor 650b ladyback touring tandem, Vitus 979, Joe Bell painted Claud Butler Dalesman, Colin Laing curved tube tandem, heavily-Dilberted 1982 Trek 6xx, René Herse tandem

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Originally Posted by nazcalines View Post
Why not use round tubing instead of square?
I did have this thought. Round tubing often is available in nice seamless telescoping sizes and can be easily cleaned inside and out with reamers and drills and lathe tooling. Production is, indeed, easier. Singer did it this way. However, square locates the derailleur in torsion. The handle should indeed do this, but I thought that a "belt-and-suspenders" redundant approach was appropriate since I'll be brazing it on.
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