Originally Posted by
wheezing donkey
Daz, the bottom bracket appeared to have spear point lugs holding the seat tube and the seat clamp was a lug. Apart from that, head tube to top & down tubes was fillet brazed, as was top tube to seat tube and down tube to bottom bracket. Seat stays were 'shot-in' to the seat clamp.
I am not too sure about Reynolds being able to teach frame builders how to braze this tube set. Reynolds/Carpenter themselves did some prototype brazing on early THICKER than production sections. They then had to recruit Dave Yates to do prototype brazing on the thin production sections, to prove that it was feasible. Dave's fillet brazing stood up to something like twice the normal stress cycles that Reynolds would normally test to. Just google Dave Yates Cycles.
For something a bit different google Trevor Jarvis 'Flying Gate' Cycles. TJ is 75 years old and living with cancer. He is very old school and will not entertain 853 or 953. He currently builds in Reynolds 725 heat treated Chro-Mo, which has similar strength characteristics to the old 753 tubing and wall thickness similar to 853. Another builder will takeover production next year but TJ will still own the design and hence receive some royalties.
As for smoothness, local 'steel is real' afficionados keep telling me that the modern 'super strong' steels are tending towards being as harsh as aluminium and that titanium is the way forward. I'm wanting a new bike but can't make my mind up between top-end steel or titanium. Ali & carbon will not get a look in.
PS you still have not said why you are yearning for a Mercian when the Rourke is only 12 months old??