Quick question about tubulars
06-09-09 | 04:36 PM
#1
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Pug lover! Dogs and bikes
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From: San Jose, CA
Quick question about tubulars
I just removed a tubular that I'm sending to a fellow C&Ver and I want to make sure... Is the tire supposed to be hard and crusty where the sewing is found? I have no experience with tubular tires so please forgive my ignorance.
Last edited by Tigerprawn; 06-09-09 at 04:49 PM.
06-09-09 | 04:44 PM
#2
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From: Collegeville, PA
Bikes: Ruckelshaus Randonneur, Specialized Allez (early 90's, steel), Ruckelshaus Path Bomber currently being built
It's probably just old glue. So long as it holds air, the tread isn't delaminating, the sidewalls are healthy, and the base tape isn't coming up, the tire should be OK.
Pete
Pete
06-09-09 | 05:00 PM
#4
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From: San Jose, CA
Yea, I was concerned about that too as it's evident on most of the tire.
06-09-09 | 05:49 PM
#6
www.onecycles.com
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From: Western Slope, CO
Pic #3: can't you just tighten that section up with a little sewing? they are sew ups, right? or to patch them are you supposed to get in the tire at the seam and then repair the seam after you patch the tube?
06-09-09 | 06:57 PM
#8
One tire shows adhesive residue, no problem, just use a dull scraper to remove the loose stuff, with the tire holding some air.
The other is lacking a base tape, o.k. to use but there will be no repair on that tire when it gets punctured.
The casing showing broken threads is a weak spot, I would place it as spare. Way back on silk or good cotton tires there could be done what was called an inlay, where a section of casing ply was taken from a "healthy" donor and inserted, was some work, there as a guy in the LA area who did this in the 70's Richard Heisler, who rode from shop to shop picking up and returning tires, he taught some others how to do it, all long gone to other better paying careers.
Both tires possibly show casing layer separation, if so, they are emergency spares or casing/tube donors.
Tire life (liquid latex) can help, but I would not trust them.
On the subject of hard track glue, many guys used 3M "Fast-Tak" adhesive, the guys in the know used the one with the last digits, 8031, the others used 8001, the 001 stuff dried hard the 031 stuff stayed pliable.
The other is lacking a base tape, o.k. to use but there will be no repair on that tire when it gets punctured.
The casing showing broken threads is a weak spot, I would place it as spare. Way back on silk or good cotton tires there could be done what was called an inlay, where a section of casing ply was taken from a "healthy" donor and inserted, was some work, there as a guy in the LA area who did this in the 70's Richard Heisler, who rode from shop to shop picking up and returning tires, he taught some others how to do it, all long gone to other better paying careers.
Both tires possibly show casing layer separation, if so, they are emergency spares or casing/tube donors.
Tire life (liquid latex) can help, but I would not trust them.
On the subject of hard track glue, many guys used 3M "Fast-Tak" adhesive, the guys in the know used the one with the last digits, 8031, the others used 8001, the 001 stuff dried hard the 031 stuff stayed pliable.
06-09-09 | 08:06 PM
#10
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From: Appleton WI
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