Colorado Concept tubes available anywhere?

[Mark Walberg]

After my great success brazing a new front triangle on my crashed Derosa, I am thinking of doing the same to an old Steel Serotta that was driven into a garage while on a roof rack.

Rear triangle is fine. Needs new top, head and down tubes.

It has the Colorado Concept tubes where the down tube at the BB is 35 mm and the end at the head tube is smaller diameter. CSI model, I think (mid 90s).

I will try reaching what is left of the Serotta business, but I'm not optimistic about finding these tubes there. Maybe, though.

Does anyone other than Serotta use these tubes?

If not, then does anyone have suggestions on what else to use? I'd probably just use a straight tube that fits the lugs to be retained (for example, a straight, rather than tapered 35mm down tube). I'd like to use the original sizes if I could find them, though.

Thanks,
Mark Walberg

[echelon_john]

Dedacciai makes a 'Zero' DT that tapers from 35 to 31.75

You can get it at BRINGHELI.

[Mark Walberg]

Dedacciai makes a 'Zero' DT that tapers from 35 to 31.75

You can get it at BRINGHELI.

Cool, That would work out better than a straight 35 tube, I think.
The original down tube is 35 BB to 26.8 HT, though.
This frame still has a 25.4 top tube and a 31.8 head tube, by the way. I have a bunch of those laying around.

Thanks for the tip.

-Mark