Fatter tires: minimum clearance
As I mentioned, I think, in another topic, I was getting some new Continental GP5000 tires. I ended up getting 700x28mm cream sidewall, to put on the 1961 Gitane which has huge amounts of clearance; then the 25mm ones already on the Gitane with almost no miles on them got transferred to my 1980 Palo Alto with already had 25’s but worn out and blackwall. Anyway, while doing all this, just for fun, I stuck the Gitane’s rear wheel on the Palo Alto. OK, it fit but the clearance at the chainstays was only about 4mm per side. What’s the normal minimum clearance desired here? My 1st thought was — if it clears, then it clears. My 2nd thought was, if I broke a spoke while riding and the wheel got out of true, it might bind against the chainstay and strand me.
This new stratagem of wider tires is something I’ve been approaching in baby steps; I do not think I have any 23mm tires left. And I am contemplating perhaps doing a 650B conversion on a yet different bike so knowing minimum clearance is germane there too.
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Larry:1958 Drysdale, 1961 Gitane Gran Sport, 1974 Zeus track, 1988 Masi Gran Corsa, 1974 Falcon, 1980 Palo Alto, 1973 Raleigh Gran Sport, 1974 Legnano. Susan: 1976 Windsor Profesional.