mr rychtarski is probably using columbus airplane, which is aluminium, or perhaps his designers are just ripping off the 'columbus' name and using taiwanese alu, who knows..
@rive_gauche's point was that Columbus Air is a STEEL tubeset. Your frame is aluminium. Therefore, your frame is not Columbus Air. If it's Columbus and it's aluminium, it might very well be Columbus Airplane, after all.
le sigh
columbus air, a venerable steel tubeset
mr rychtarski is probably using columbus airplane, which is aluminium, or perhaps his designers are just ripping off the 'columbus' name and using taiwanese alu, who knows..
and 299, oh well done