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Why Glue Tubulars?

Old 09-21-08, 11:47 PM
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Why Glue Tubulars?

I'm having trouble convincing my friend and roommate of the importance of a good tubular glue job. He's a triathlete, and he's convinced himself that the 140psi in his tyres is enough to keep them on the rim (he has glued them, but it's by far the sketchiest glue job I have ever seen). There's also his belief that one turn a race isn't enough to justify it.

So far I've argued my case through the example of my gluing of my cross wheels, and via a crash at a race in Burnaby last year where three guys rolled tubulars (easily at 200psi). So now I'm at a loss. Pictures of epic crashes on rolled tubulars, scientific evidence, anything to convince him that his tyres need regluing urgently.
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Old 09-22-08, 12:38 AM
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He'll learn eventually. Hence the motto of my sig - really has nothing to do with bunnies, more like you learn how to not fall again. I'm pissed that the awesome Batman 2: The Dark Knight stole my motto though, but in no way does that diminish the movie's awesomeness.
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Old 09-22-08, 05:34 AM
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Poor gluing increases rolling resistance, because the casing squirms on the rim.
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Old 09-22-08, 05:36 AM
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your roomie is why there are clinchers.....
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Old 09-22-08, 05:41 AM
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he's a tri-tard....they don't know how to turn a bike anyway. haha
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Old 09-22-08, 05:50 AM
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some people have to learn the hard way.
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Old 09-22-08, 07:58 AM
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Ask him about Dental Insurance
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Old 09-22-08, 08:19 AM
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let him crash, post pictures, and then tell him "I told you so"...also point out rasmussen's (I'm pretty sure it was him) time trial.
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Old 09-22-08, 08:29 AM
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I helped "glue" some tubulars the other day using Tufo tape. I gotta say the Tufo tape was pretty easy and not messy. If I were to use tubulars regularly, I think that's what I would use. Maybe that would be a good option for your friend.

With all that being said, though, I'm dedicated to modern clinchers-
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Old 09-22-08, 08:34 AM
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Just ask him-

Without glue, when you brake hard what is to keep the rotation of the tire against the road
from damaging the valve stem as it pulls against the hole in the rim?
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Old 09-22-08, 11:04 AM
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Be sure and get his half of the rent at least 2 month in advance. If he won't glue it right at least use the tape method.
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Old 09-22-08, 11:18 AM
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As a high school kid I did this too, and did not generate enough g force to cause a problem. Now I generate less, but I'm more worried about my health.

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Old 09-22-08, 11:20 AM
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You've done what you could, now it's his turn to learn what he needs to know, perhaps the hard way.

Retro Grouch had a very germane quote in another thread: "A fool learns through experience. A wise man learns through other people's experience."
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Old 09-22-08, 11:21 AM
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I wonder if your roommate may have already crashed on his head.
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Old 09-22-08, 01:32 PM
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Originally Posted by fosmith View Post
he's a tri-tard....they don't know how to turn a bike anyway. haha
Truer than you might think. Not sure if you caught any of the GB Triathlon yesterday? A lot of riders stacked it getting on the bikes. One lad fell off twice before he'd moved 10 feet. Impressive...

OP, if your friend has some expensive carbon rims, ask him how he'd feel about them being shaved down the road. That is if he doesn't value his teeth.
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Old 09-22-08, 03:28 PM
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Originally Posted by Matt Gaunt View Post
One lad fell off twice before he'd moved 10 feet. Impressive...
God I hope that's on YouTube
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Old 09-22-08, 04:00 PM
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Originally Posted by LWaB View Post
Poor gluing increases rolling resistance, because the casing squirms on the rim.
That's the least of his concerns.

I once had a tubular roll off the rim, not because of bad gluing but because I had gone so long without a flat (luck) that the glue aged and lost its stick.

I fractured my collarbone, very painful and a good bit worse than sqirming casing (IMHO).

Don't tell your roomie anything, just be ready with the painkillers.
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Old 09-22-08, 08:10 PM
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Its his choice. Make sure you get his rent before races and make some contacts with some good plastic surgeons. If he doesn't want to glue his tires, tell him to take it to a shop and have them glue them. If he's too cheap to do that, tell him to get clinchers. If that fails, well just collect his rent ahead of time.
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Old 09-22-08, 10:48 PM
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Haha, ya, it might be a hopeless case until he crashes hard. It's odd because he's studying engineering, you'd figure this sort of thing would be the logical conclusion to make. Then again he's studying engineering...

I did a roll test by hand today. Pumped the rear tyre up to 120psi, and just gave a nice roll with my palm and finger leverage. Managed to almost take the tyre of the rim. I showed him that. Still no response. I'm worried, maybe he'll crash in the TT tomorrow and learn something.

I do feel like an ass leaving it up to that though.
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Old 09-22-08, 10:57 PM
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he's a triathlete. that explains a lot.


um, let him crash. what option do you have short of sneaking some glue on there yourself in the dead of night?
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Old 09-23-08, 05:50 AM
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Originally Posted by rmfnla View Post
That's the least of his concerns.
Of course, rolling tubs and crashing is his major concern but the flatmate is already blowing off that worry. If he is only interested in things that help him go faster (like some tri-geeks I know), this is another reason to glue tubulars on well.
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Old 09-23-08, 06:00 AM
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Originally Posted by Plantmiester View Post
I do feel like an ass leaving it up to that though.
Give up. I assume he is over 18 years old and you are not his mother. Let it go.
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Old 09-23-08, 08:46 AM
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Simple. Don't ride near him and hope that all of his tris have a no drafting rule.
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Old 09-28-08, 09:55 AM
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140 psi may actually hold the tub on the rim, but what happens when you get a flat and the pressure drops precipitously, quickly? My worst crash ever was due to a poorly glued tub (my fault, no one else's) and the month of road rash and broken collar bone was enough to make me glue tubs better. My continued apologies to the 20 or so other riders I took out during that sprint.

At my current older, somewhat wiser and lazier age, I use clinchers.
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Old 09-28-08, 10:21 AM
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Originally Posted by Plantmiester View Post
I'm having trouble convincing my friend and roommate of the importance of a good tubular glue job. He's a triathlete, and he's convinced himself that the 140psi in his tyres is enough to keep them on the rim (he has glued them, but it's by far the sketchiest glue job I have ever seen). There's also his belief that one turn a race isn't enough to justify it.

So far I've argued my case through the example of my gluing of my cross wheels, and via a crash at a race in Burnaby last year where three guys rolled tubulars (easily at 200psi). So now I'm at a loss. Pictures of epic crashes on rolled tubulars, scientific evidence, anything to convince him that his tyres need regluing urgently.
When he rolls his tubulars off the rim, that's when he'll think "**** that guy was right!".
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