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Re: A2 Aero Data for Corsa Speed, Conti Supersonic and TT on HED JET+ Black [Thomas Gerlach]
Thomas Gerlach wrote:
grumpier.mike wrote:


Actually very easy to install on the Firecresr. I was running a pair of the Corsa G+ tires before and they were almost too loose. I had a G+ blowout the other day on the rear and the bead was off the tire completely


That is slightly concerning. The reason I gave up on cotton-based clinchers in the first place is because they were repeatedly blowing off my Firecrest rims on hot and humid days. It never happened while racing, but I can only image if it did. The problem with the blowoff is that it goes flat almost instantaneously. The same thing was not happening with blown rubber tires and that is how I actually landed on the Supersonic way back in I think 2011


That's not going to happen though with a rim that has the tubeless-ready raised rim bed areas under the bead. I noticed that with Turbo Cottons on the Jet+. They're "locked on" and you have to force the beads off the shelf sideways with your thumbs to unseat them.

As far as "everyday" use goes...I have at least 600-700 miles on the CS I set up tubeless on my rear Jet+. It seems to be wearing fine (not excessively fast) with only 2 "incidences", neither of them major...and both arguably being evidence in favor of the approach. First, was a small staple I noticed prior to a lunch ride (where I was under time constraints) that had embedded in the tread. In hindsight, I should've spun the tire before pulling it out, or left it in for the short ride. I didn't...I pulled it out and then dealt with a bit of sealant spraying out. It was a tiny hole (too small to use a plug on) and I knew the sealant would hold eventually, but at first it wouldn't hold >60psi without blowing out the sealant "clot". I grabbed a different bike for the ride and by the time I got back an hour later it could hold full pressure.

The second incident was during an after-work "crit practice"...going through some turns, the rear felt "loose" and actually slid out slightly. Fearing it was losing air, I stopped and sure enough, it had. I took a look around the tire for something that had punctured it, and only saw a small bit of sealant in one of the tread grooves. Wiped it off and didn't see a hole. I gave the tire a few spins, grabbed my frame pump (Silca Impero Ultimate :-) and pumped it back up. Held fine for the rest of the night.

Other that...its been great. Holds air better than a latex tube, too. I probably should pull the valve core and top off the sealant soon...just in case ;-)

http://bikeblather.blogspot.com/
Last edited by: Tom A.: Apr 22, 17 7:00

Edit Log:

  • Post edited by Tom A. (Dawson Saddle) on Apr 22, 17 7:00