Road Cycling - Columbus Tenax?

Spotted a Schwinn Tempo, 105 6 speed, 22 inch!!!!!
It's built with Tenax, with TRE TUBI RINFORZATI at the top of the label. This bike is in great shape but I'dd like to know something about the tube set besides it comes from a well respected manifacture.
kevin

Tenax was at or near the bottom of Columbus's line in the late-80s. It's a pretty standard cromoly, but the tubes are seamed, and only the three tubes of the main triangle are butted. The stays and head tube are straight gauge. It's good quality cro-moly steel from a time in history when a whole lot of consumer bikes were made of straight-gauge hi-ten.

Well that might not make everybody happy but seemed cro-mo tube is fine by me, the fact that they are butted is much more important.
I couldn't wait any longer and went and got it, now I won't have the bug to buy a new bicycle, finding a lugged one is getting tough!
Thanx velocipedio!!!!!!!!!!!!!!!!!!!!!

It's actually probably a very nice frame. The total bike weight for a 54 cm frame would probably be in the 24 lb range. From what I remember about Tenax, it's a nice ride. I knew a guy who had a Tenax MTB, of all things, back in the early-90s and loved it.

From what I remember of late-80s Schwinns -- which is not much because I don't think they were sold in Canada at the time -- the Tempo was in the higher end of the mid-range or the lower end of the high-range of their line. It was more of a sport bike than a competition bike, but I remember it being thought of as a serious bike. Your bike probably dates to the early-90s, which would have been about the end of that product line.

My 1982 Bianchi, which is the most fun, responsive bike I have ever owned, has a Columbus Tre Tubi Rinforzati frame, which a Bianchi-phile told me comprises a double-butted [rinforzati] seamless main triangle [tre tubi] and seamed CrMo forks and stays. Except possibly for seams in the main triangle, Tenax sounds like the same thing. If the geometry is good, the Tempo should be a fine machine for you.

I bought a Schwinn Tempo in '85 or '86... white with aqua coloring and I really liked the ride with the Tenax. It's hanging in the garage now that my Trek gets to sleep inside.

Your bike probably has Biopace chainrings if they're the originals. This obviously didn't become the order of the day. I always felt like I was pedalling in squares, not circles. You could easily swap them out if that's a problem for you.

The 105 group should be Shimano's first crack at what they called the SIS, or Shimano Indexed Shifting. Some days I wish my Ultegra group shifted as firmly as that did. I think the Ultegra is sloppy.

The original wheels were crap. I think the brand was Araya, or something like that. I was really hammering the pedals one day and the spokes turned into spaghetti. I replaced them early on with Mavic rims/Campy Record hubs to enhance the ride. I just wish I hadn't put tubulars on it, otherwise I'd probably still be using those wheels. Clinchers weren't what they are now... back then.

FWIW, back then the bike went for ~$550-600.

Happy riding.