Originally Posted by
Andrew R Stewart
The first thing I would do is try to determine if this is a crack in the tube or just the finish. One way could be to drip some fluid (WD-40?) inside the tube and then position the frame so the "crack" is at the lowest point. Any fluid seeping through to the outside?
This is a brilliant idea and I'll set up the conditions for the experiment here following the postage of this message, purely for science... Since tacking my query, I reviewed earlier photos of my time with this bike and the crack has increased substantially (it was merely a tiny scratch when I obtained it, obscured by all of the others). There is literally liquefied rust seeping out of the wound which has stained the paint and I need kiss it goodbye.
(I've now had three costly keirin frames fail in less than a year—methinks it is time to find another niche of the cycling world to hang my hat on.)
Thanks so much for your help—I needed a kind hand to guide me towards reality and yours was tender