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Speaking of Tubes...(5 posts)

Speaking of Tubes...Kristin
Jun 15, 2001 12:36 AM
Do some tubes/tire/rim combo's work better than others??? I'm curious.

The DB came with Campy Montreal Rims, Mich. Axial Carbons and Mich. A1 tubes. I went through 3 A1's in 4 weeks. (I'm Getting good at changing tires--under 15 min. now!) The A1's seemed prone to snakebites, which would take a while to work out. Plus, I could never get the valve mount completely under the tire. I replaced the last A1 with a Continental Race tube, and it mounted quite agreeably. The valve mount feels narrower and less stiff than the Mich one, and therefore fits better under the tire. Its been 3 weeks, and so far, so good.

Also, I want to buy Conti tubes online, but I'm not sure what I have. The box doens't say latex or butyl(sp?), just Continental Race. I'm assuming their latex, but don't know for sure.
re: Speaking of Tubes...jayz
Jun 15, 2001 5:48 AM
My dearest Kristin,

I have been using A1's with axial pros and have not had any problem...
the only flats i have had were with other tubes on my training weels.
Is this the same wheel with all the flats?? if so, make sure there is not anything in the tire that is causing the repeated flats.

conti latex tubes are light yellow, butyl are black.jw25
Jun 15, 2001 6:35 AM
I've been using Michelin A1's for about 2 years, and haven't had a problem. If you're getting snakebites, it's probably due to underinflation or possibly a bit of something in the tire causing a pseudo-snakebite flat. The tube doesn't make that much difference in either case, all will fail, though a thicker tube will take slightly more pressure for a real snakebite.
Personally, I'd flip the tire inside out, and inspect it carefully under a bright light. If nothing's apparent, turn it right side round, and look for any cuts in the tread, which might be holding a bit of glass, thorn, etc.
If that's not it, I'm stumped. If the Conti's are working for you, good, and they're comparably priced to the Michelins (Colorado Cyclist and Nashbar have them, probably Excelsports, too). Might as well lay in a stock.
Good luck. Jon
re: Speaking of Tubes...fuzzybunnies
Jun 15, 2001 7:01 AM
Check the rim strips to see if thats causing you're problems. If it's a cheap plastic one pull it out and replace it, sometimes the edges cut into the tube causing flats. Don't know how to tell you if the tube is latex or not. TTFN
hmmm...sounds like they're butylKristin
Jun 15, 2001 9:39 PM
Very, very interesting... were the A1's latex? The packaging never says. Perhaps that's the difference.

The flats (oops...fl*ts) were all on the front (rear tires still has orig. tube). I did take the tire completely off and checked it throughly, inside and out. Nadda. The Rims are cloth lined and, I was told, hand made; so I figured I shouldn't have a problem with shavings. Either way, the tire is clean. (Now, I must confess to hitting a certain number of holes. They could have all been pinch flats--don't know.)

When I said "snakebite," I didn't mean that I was getting snakebite flats, but rather that I was having trouble getting the Mich. tubes to go completely under the tire. It took a while to get all the kinks out. Again, if they were latex, that would esplain things--thinner materials and all.