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Mavic Cosmos and Michelin Axial Pros set-up(7 posts)

Mavic Cosmos and Michelin Axial Pros set-uplaffeaux
Jan 28, 2002 10:52 AM
I bought a Mavic Cosmos wheelset recently, along with new Michelin Axial Pros. Put them on the bike, rode about 100 yards and the rear tube blew (sounded like a gun shoot). I assumed that I'd some how pinched the tube between the bead and rim causing the blow out. I put in a new tube, road about 100 yeards, and the rear tube blew again.

This time I pulled the tire completely off. The tube exploded on the rim side. I felt around in the rim and there was nothing there to cause the problem. The spokes all feel tight, and nothing is pushing through. To be extra cautious I removed the "yellow" plastic stock rim strip and replaced it with Velox rim tape. Then I put the tube and tire back on.

I've not ridden the bike since replacing the tube again. (By the time I'd made it ot the LBS for rim tape, and a new tube, then replaced it, it was dark and raining.) Has anyone else had this problem with this rim/tire combo? Both times I had 110 psi in the tires. They are rated from 87-116 (I think that's right). The rim strips are rated to 130psi. The tubes are Wrench Force extra lights.

Has anyone else had this problem? I'm hoping new tape fixes it, but I'm worries about reinflating them to 110psi. Should I run less pressure?
Same setup; no problems. (nm)morrison
Jan 28, 2002 10:57 AM
re: Mavic Cosmos and Michelin Axial Pros set-upLC
Jan 28, 2002 11:09 AM
Very common setup, since it is basically an Open Pro rim. Open Pro and Axial Pro is a very common, since that is what you usually get when you order a bike kit online. There is nothing wrong, except maybe with your particular rim or more likely your installation of the tube and tire. Most likely you are not getting the tire seated or you are pinching the tube under the edge of the tire.
Tend to agree...Ed3
Jan 28, 2002 11:32 AM
I have Cosmos as well w/ problems.
Although, I had heard that the stock rim strips were garbage so replaced them when I got the tires.

It's probably a pinched tube, IMO
re: Mavic Cosmos and Michelin Axial Pros set-upDave Hickey
Jan 28, 2002 11:30 AM
I had the same problem with Velocity rims and cheap plastic rim tape. I replaced the tape with Velox and haven't had a problem since.
The new rim strip should do the trick; ride it!jtolleson
Jan 28, 2002 11:37 AM
Your rim strip solution sounds exactly like what's up. I have not had such a problem with that combo (though I have the same rims and tires) but HAVE had that problem with low end rim tape.

I think you've got it licked; you just need to put 110 psi in there and go ride it. No, you don't need to ride less pressure.
I agree,the new rim strip should do the trick; ride it!davet
Jan 28, 2002 10:24 PM
The plastic rim strip can bulge into the spoke cavities enough to allow the tube to blow. I have had it happen to me, twice! Replaced the plastic rim strip with Velox, zero problems since.