Cycling Equipment · Public discussion

Columbus tubes - SL vs Brain vs. Thron

Started by David E. Belche · · Last activity · 4 posts · 6,360 views

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Cycling Equipment
Published
13 June 2003
Last activity
13 June 2003
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David E. Belche
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  1. Dear All,

    Looking for a bit of advice on frames built with the above - do the latter two have clear-cut
    advantages (for competitive use) over SL which would make buying a new frame worthwhile? Reason for
    asking is that I'm considering replacing my cyclo-cross frame, since (a) the standover height is
    less than ideal - I think I need 56cm c-c not 58 as is the current case and (b) modern 'cross frames
    are built to take fatter tyres and thus mud clearances are more generous. My current frame is about
    17 years old, and suffers from poor clearance around the brake bosses and fork crown - at the height
    of a British autumn, build-up of dead leaves, etc. causes the front wheel to lock when racing on
    wooded courses. Peugeot market a very nice 'cross bike here in the UK which appears to be just the
    job, though web sources seem a bit ambiguous as to the tubeset used - some claim Brain, others
    Thron. I know Brain is the better of the two, but are both superior to SL for my needs? The Peugeot
    has an oversize profiled down tube, too, which looks as though it ought to cut out unwanted flex, so
    that's a point in its favour. Equipment is a bit basic, but it's the frameset that's of interest -
    would probably transplant bits from the current bike, and use the Peugeot's parts on my SL frame as
    a spare machine/everyday runabout. All feedback gratefully received, as ever.

    Regards, David E. Belcher

    Dept. of Chemistry, University of York

  2. deb-<< do the latter two have clear-cut advantages (for competitive use) over SL

    Brain was essentially oversized SL...Thron generally oversized but a thicker walled
    versuion of Brain.

    Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
    (303)440-3535 vecchios.comvecchios.com "Ruote convenzionali costruite eccezionalmente bene"

  3. I'd just like to add a big "thank you" to Jeff Martin & Peter Chisholm for their swift feedback re.
    this topic.

    David E. Belcher

    Dept. of Chemistry, University of York

  4. Brain vs. Thorn

    Both of these tubesets are very similar. Of the two, Brain uses a higher grade of metal and
    the tubes are slightly lighter due to shorter butts. I wouldn't call the differences
    significant however. In fact, it seems strange to me that Columbus would market two tubesets
    that are so similar.

    Columbus has dropped Brain from their lineup so maybe this is why the confusing Thorn/Brain info on
    the frame in question. In either case, the new frame will be stiffer than your old one due to the
    larger tube diameters.

    Good luck.

    Ed

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