Bicycle Mechanics - Flats with tubulars...
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07-29-02, 10:57 PM
If tubulars need to be glued on and then the glue needs to set, what do you do when out on the road? Do you just slap the spare on and not ride as hard? What are the chances the tire will spin on the rim and tear the valve stem?
07-30-02, 12:12 AM
Use a previously mounted tubular for a spare, so it will stick on the rim a little better and go on a little easier. Yes, do ride easier on the spare and take extra caution on turns-do 'em a lot SLOWER. The chances of tearing the valve stem off is pretty slim.
Ride Sewn UP
Always carry a pre-glued spare. Just spread a thin layer on the tape and let it dry. When you mount it it will adhere to the glue already on the rim. For caution's sake, don't bank as hard on the corners, but the chances of actually having a pre-glued spare roll off the rim are pretty slim.
07-30-02, 10:08 AM
Yes, when the tire's inflated, it grips the rim like an inflatable blood-pressure cuff grips your arm, so pump it up all the way and it should stay put (pre-gluing strongly recommended, as mentioned). Naturally, if you were going to use it for a while you'd want to take it off at home and glue it on properly.
There are places that will repair your punctured tubular for you, if you don't feel like doing it yourself. You might look in the back of, say, VeloNews for such an outfit.
FWIW there are alot of sites that detail
how to repair tubulars. Heck, even my bicycling
repair book goes over it. For minor punctures
its worth looking into. If you're paying $50
and up for tires don't trash them after the first flat.
If you can't repair it (say a really trashed tube) I agree
with MechBgon and send them off for repair.
When you replace a tubular on the road, there is always enough glue remaining on the rim for the tyre to adhere to. No, I wouldn't want to race it hard with a spare, even a pre-glued spare, but I've never rolled a tubular off any rim. The chance of the tyre slipping radially is almost impossible.
When I change a tubular on the road, I usually use the "dork nut", as a way of keeping my tyre properly seated, as I work it onto the rim.
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