RoadBikeReview.com's Forum Archives - General


Archive Home >> General(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 )


Tyre rubbing on wheel arch...........why???(23 posts)

Tyre rubbing on wheel arch...........why???TheJoker
Sep 9, 2003 3:30 PM
I just installed a new tufo 21mm tubular onto my disc wheel and put it on. Whenever the valve part of the wheel is in the wheel arch the tyre rubs against the wheel arch...

Is the tyre faulty? I think the valve is aligned up with the hole. I had the same tyre on before and it didn't do this. So what's going on?

Grrrr....i'm so unlucky with tyres
re: Tyre rubbing on wheel arch...........why???TheJoker
Sep 9, 2003 3:44 PM
pic of tyre where it doesn't rub...
re: Tyre rubbing on wheel arch...........why???TheJoker
Sep 9, 2003 3:45 PM
pic where it does rub [by the valve]...
re: Tyre rubbing on wheel arch...........why???TheJoker
Sep 9, 2003 3:46 PM
pic of tyre @ 100psi...
Biopace disc?filtersweep
Sep 9, 2003 4:55 PM
Or was it a former "clown bike" wheel with a happy face painted on it?
Biopace disc?TheJoker
Sep 9, 2003 5:10 PM
It's a bog standard Corima disc...

Where did you think the clown face was?
Biopace disc...NOT. Loose carbon fiber needs tensioning...nmbicyclerepairman
Sep 9, 2003 5:15 PM
Biopace disc...NOT. Loose carbon fiber needs tensioning...nmTheJoker
Sep 9, 2003 5:17 PM
what. i don't understand any of this...

what's going on?
Alternately, what you have is a primitive speedometer...morebicyclerepairman
Sep 9, 2003 5:19 PM
When you feel the bumps as a buzzing in the saddle and handlebars, slow down!
Alternately, what you have is a primitive speedometer...moreTheJoker
Sep 9, 2003 5:27 PM
heh. yeah i can count the squeeks to tell the speed...

what's this about carbon fibre tensioning?
I'm sorry. Having fun at your expense...morebicyclerepairman
Sep 9, 2003 5:49 PM
I stopped myself before I recommended removing the tire, flopping it over 180 degrees, and re-gluing it....Or, how about this: take a rasp and file down the high spot on the tire! If that doesn't work, you could use liquid latex to build up the rest of the tire so it rubs all the time...
P.S. carbon fiber is tensioned before the epoxy dries...nmbicyclerepairman
Sep 9, 2003 5:51 PM
P.S. carbon fiber is tensioned before the epoxy dries...nmTheJoker
Sep 9, 2003 5:55 PM
the wear on the carbon is due to braking...
I think Campy sells an aero disc wheel whacker...bicyclerepairman
Sep 9, 2003 6:16 PM
be sure to have it set to "Stun".
Seriously, though, that tire should likely be returned, unlessbicyclerepairman
Sep 9, 2003 6:20 PM
you put , like, A LOT of glue in the area of the valve stem.
If there's a story behind your handle, I would LOVE to hear it. nmbicyclerepairman
Sep 9, 2003 6:23 PM
If there's a story behind your handle, I would LOVE to hear it. nmTheJoker
Sep 9, 2003 6:32 PM
who me? my bike's a C4 Joker. That's pretty much it. it's not rocket science...
Seriously, though, that tire should likely be returned, unlessTheJoker
Sep 9, 2003 6:24 PM
yup, that sucker/fecker's going back to where it came from.

I used the proper adhesive tape stuff, but it's just way off [like 7mm or so] no amount of tape would do that
The valve area has excess butyl...biknben
Sep 9, 2003 4:15 PM
The tube is usually double thick around the valve. The lacing around the valve can sometimes be sloppy too. I noticed that a few tubulars didn't always sit right on the rim at the valve. I had a Conti Sprinter with a noticable thump for a couple rides until it worked itself out. Since then I always made a point of jamming the valve into the rim before I started mounting the rest of the tire.

Is it the same tire or same type (brand/model) of tire? I'd remount and see if it continues.
The valve area has excess butyl...TheJoker
Sep 9, 2003 4:24 PM
yeah, it's the same type of tyre that was on it before [Tufo S3].

The frame is really close to the tyre which is why this small difference has been such a nuisance, I don't know why, maybe a design fault, maybe it's more 'aero'...but I'm remounting it right now...which is NOT easy, but I'll make sure it's not lumpy round the valve.
That's one lumpy tire! (nm)Kerry Irons
Sep 9, 2003 4:34 PM
..and a very dirty bike. nmSpunout
Sep 10, 2003 3:30 AM
re: Tyre rubbing on wheel arch...........why???hackmechanic
Sep 9, 2003 6:30 PM
Either the tire or the wheel is out. Put it in a truing stand and line up the indicator with the edge of the rim and see if they've mounted the hub in the center of the disc. If the rim goes up and down then it's the wheel. If only the tire changes in up and down then you have a defective tubular. If it's not been glued you should be able to return it. You'll always get a fight on a tubular return after it's been glued. Don't blame the retailer, it's the manufacturers policy.