Is this normal?
09-18-17 | 03:35 AM
#26
Lover of Old Chrome Moly
Joined: May 2011
Posts: 2,948
Likes: 24
From: NW Minnesota
This is far more normal than putting goop into a tyre. Like, it's been that way since the tyre was invented.
I believe it has to do with the size of gas molecules in the air, and the smaller molecules find a way of permeating through the rubber inner tube. I think people who use CO2 to inflate their tubes, have greater issues with deflation over a shorter period than those who use normal air.
Car tyres don't have the same issue to the same extent, mainly because... well, have you seen how thick a car tyre is?
I believe it has to do with the size of gas molecules in the air, and the smaller molecules find a way of permeating through the rubber inner tube. I think people who use CO2 to inflate their tubes, have greater issues with deflation over a shorter period than those who use normal air.
Car tyres don't have the same issue to the same extent, mainly because... well, have you seen how thick a car tyre is?
I use a proprietary blend of 78% nitrogen, 21% oxygen and less than 1% carbon dioxide
. I still need to top off my tires every few days (not necessarily every ride). In a week I lose 10-15 psi, more from my road tires and less from my larger and lower-pressure touring tires.
Last edited by Myosmith; 09-18-17 at 03:46 AM.
09-18-17 | 06:09 AM
#27
Senior Member
Joined: Aug 2017
Posts: 308
Likes: 0
From: Vermont
Bikes: Trek Domane SL5, Raleigh Venture 4.0, Ross Gran Tour II
It's not really that much of a stretch-- my nephew rode MTB for years and years, including 4 years on the High School MTB team, and was tubeless the entire time-- he never had to deal with tubes until he got his first road bike. Mind you, he was born in 1996. It's entirely plausible that tubeless bicycle tires predate the OP's cycling career.
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