• They offered a Columbus frame for a while, but stopped with it.
    Columbus frames had to be soldered with silver, while all Reynolds 531 could be brazed with brass.
    Silver: more expensive, need more skills thus more experiences staff, could not be done with the big sets of torches Gazelle was using in their brazing "street", need better/tighter fit between lugs and tubes.
    Instead of columbus, Gazelle continued with Reynolds 753, which required the same skills and handling as Columbus, but was a bit lighter and fashionable at that time.
    Perhaps the fact that Gazelle and Reynolds both belonged to the Tube Investment group also played a role.
    Later, Gazelle made some prototypes with Columbus tubing (SLX, Max, MS), which never made it to production. A friend of mine still has the SLX somewhere in his garbage as a relique.
    After I left the company, there was a model with Columbus Foco tubing, but I can't tell more about that. Just brows old (post 1990) catalogues.

    Enough history lessons for today ;-)

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