Hi Thomas,
Reynolds 708 was introduced in 1982 according to a flyer from TI
Reynolds, It has what was called variable strength technology.
The head-tube and fork parts are 531 mang-moly at 120,000 psi, the three
main tubes where of the same mang-moly but heat treated to 135,000 psi and
the stays are made of mang-moly but heat treated to 195,000 psi. The latter
is what 753 was made of.
708 has 8 straight ribs on plain gauge through the three main tubes
similar to Super Vitus TXO tubing, however the TXO had a 6 ribs down the
tubes and on top of the butts and had a strength 175,000-185,000 psi.
Super Vitus was and still is my favorite tubing to work with.
Columbus SLX/SPX had spiral ribs on the butts and TSX had spiral ribs
through out the tubes, the psi was about 120,000. Tsx was like a giant
spring inside, in my humble opinion al it did was add weight.
Anthony
Mezzatesta Custom Cycles
Cranberry Twp. PA. 16066
http://www.mezzatestacustomcycles.com
Dear List:
I'm looking at a frame (which is at least KOF) that is made from Reynolds 708 tubing. I thought for sure that this was a mistake, but if you google, Reynolds 708 is a straight gauge tube with reinforcing ribs, ala Columbus SLX/SPX. Date of manufacture is no more specific than "in the 80's". Does any one have info on this tubing? Quality, durability, stiffness, etc etc? As it didn't last in the Reynolds lineup very long, it can't have been super great, but was there a specific flaw that killed it?
As a hefty fella (around 110 kilos), would this be a good match? Any info appreciated. I tried the archives, but couldn't get in today for some reason.
Tom Adams
Manhattan, KS.