Originally Posted by
fietsbob
tubes were like Plumbing pipe, and Turnbuckles, tapered thread,
1 end RH the other end LH thread,
so turning the tube pulled on both lugs.
Ah, so that's the trick
I wonder how hard it would be to this yourself and start to crank out custom frames
Off to the framebuilders subforum! kidding. would be awesome though, build your own bike with plumbing taps and tubes from the hardware store.