Hi folks, After seeing the thread regarding Columbus/Cinelli, I figgered the time is appropriate to repost the info on Columbus tubes originally sent to us in '99 by John Barron.
Jan Pinkowish Bristol, CT
<><><><><><><><><> Subj: Re: Columbus descriptions Date: 12/27/99 8:23:57 AM EST From: velostuf@uswest.net (John) To: classicrendezvous@listbot.com
Here's some Columbus info. Different Columbus catalogs show different info. I've retained some of the translation subtleties:
Columbus butted frame tubes for road races:
SL (suitable for athletes of inferior weight than kg. 70 (lbs.155), tubeset weight 1932 gms or 2065 gms (depending on the Columbus catalog you look in). - - - - - - - - -
"SL-Road Light-2065 grams A medium-light elastic set used for in-line and lap road races over flat and smooth roads. Suitable for riders weighing less than 155 lbs" Main triangle-single and double butted tubes 0.6-0.9 mm wall thickness Head tubes 1.0 mm Chain and seat stays 0.7 mm Steering tube-single butted and helically reinforced with 5 ribs Fork blades-oval 0.9 mm. - - - - - - - - -
TSX tubeset weight 1945 gms Rifled in butts: BB end of chainstays, BB end of seat tube, all of the way through the downtube, all of the way through the top tube, and fork crown end of steerer tube (as in SL) - - - - - - - - -
SLX tubeset weight 1966 gms. Rifled in butts: BB end of chainstays, BB end of seat tube, both ends of downtube, and fork crown end of steerer tube (as in SL)
Top tube/downtube: .9/.6/.9 Seattube: .9/.6 Chainstay: .7 Seatstay: .6 Fork blade: .9 Headtube: 1.0 Tubeset weight 1286g. This is from the late 90s Columbus brochure. I'm not sure whether it changed over the years or not. - - - - - - - - -
SP (suitable for athletes exceeding kg. 70 (lbs.155), tubeset weight 2295 gms or 2375 gms (depending on the Columbus catalog you look in) - - - - - - - - -
SPX tubeset weight 2325 gms. Same rifling as in SLX - - - - - - - - -
Columbus frame tubes for track races: PL for pursuit or record races tubeset weight 1845 gms PS for sprint and 6-day races tubeset weight 2435 gms
John Barron http://www.velostuf.com