tires keep losing air?
#1
Walks with a limp
Thread Starter
Join Date: Nov 2006
Location: Indy, IN
Posts: 1,346
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
tires keep losing air?
I ump up my tires religiously before I ride, like 3 or so times (at least) a week. they're always losing air. the thing is, they're brand new tubes. and it will alternate, front and back. I'm kind of new to presta valves, but I've never had this problem before. I'm using a Presta to Schrader adaptor to inflate, if that means anything. I'm so confused; I've never had such a slow, peristent leak. Any ideas?
#2
Pwnerer
Are you closing the valve after using the adapter? If not, on bumpy roads at speed the presta valve can open causing you to lose air.
The procedure goes: open the presta valve by unscrewing the top nut, screw on the adapter, inflate, remove the adapter, then close the presta nut. At this point you can either replace the adapter or not, your choice. You may also want to look at your pump to see if it adapts to presta valves. If so, you won't need an adapter other than for using a compressor. Most of them unscrew, you flip the internal parts around, replace them and screw it back together.
Hope that helps you.
The procedure goes: open the presta valve by unscrewing the top nut, screw on the adapter, inflate, remove the adapter, then close the presta nut. At this point you can either replace the adapter or not, your choice. You may also want to look at your pump to see if it adapts to presta valves. If so, you won't need an adapter other than for using a compressor. Most of them unscrew, you flip the internal parts around, replace them and screw it back together.
Hope that helps you.
#3
Banned.
Join Date: Feb 2003
Location: Fort Wayne, Indiana
Posts: 4,761
Bikes: 84 Trek 660 Suntour Superbe; 87 Giant Rincon Shimano XT; 07 Mercian Vincitore Campy Veloce
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 3 Times
in
3 Posts
Originally Posted by Wordbiker
Are you closing the valve after using the adapter? If not, on bumpy roads at speed the presta valve can open causing you to lose air.
The procedure goes: open the presta valve by unscrewing the top nut, screw on the adapter, inflate, remove the adapter, then close the presta nut. At this point you can either replace the adapter or not, your choice. You may also want to look at your pump to see if it adapts to presta valves. If so, you won't need an adapter other than for using a compressor. Most of them unscrew, you flip the internal parts around, replace them and screw it back together.
Hope that helps you.
The procedure goes: open the presta valve by unscrewing the top nut, screw on the adapter, inflate, remove the adapter, then close the presta nut. At this point you can either replace the adapter or not, your choice. You may also want to look at your pump to see if it adapts to presta valves. If so, you won't need an adapter other than for using a compressor. Most of them unscrew, you flip the internal parts around, replace them and screw it back together.
Hope that helps you.
BUT I have a feeling you already know all of this that Wordbiker and I have mentioned; therefore the next question is what brand tubes are you using, and which ones as well as to their weight in grams? Because if your using tubes that are considered ultralight or racing tubes, they are thinner thus will bleed air out naturally at a rate of between 5 to 15 pounds a day depending on how ultralight they are. I use Specialized Turbo tubes that weigh 65 grams and these lose about 10 to 15 pounds a day. The only way to get around this is buy thorn resistent tubes that are quite a bit thicker, or cheap thick Walmart tubes, and those will probably lose about 5 pounds every other week.
#5
Walks with a limp
Thread Starter
Join Date: Nov 2006
Location: Indy, IN
Posts: 1,346
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I'm running 28's at only about 85-90 psi. the tubes are nothing special, I think they're branded as schwinn 28-32s. I may not be screwing the valve all the way in, or it may be working its way loose; I ride on brick streets all the time (one of the reasons for low pressure and wider tires), and sometimes it's pretty brutal.
10-15 lbs a day? I never Knew.
Thanks for the help.
10-15 lbs a day? I never Knew.
Thanks for the help.
#6
Banned.
Join Date: Feb 2003
Location: Fort Wayne, Indiana
Posts: 4,761
Bikes: 84 Trek 660 Suntour Superbe; 87 Giant Rincon Shimano XT; 07 Mercian Vincitore Campy Veloce
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 3 Times
in
3 Posts
Those Schwinn tubes are fairly thick, but could still lose 5 psi a day especially on hot days, banging down on brick roads don't help either.
#7
Elitist Troglodyte
Join Date: Jun 2006
Location: Dallas
Posts: 6,925
Bikes: 03 Raleigh Professional (steel)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Originally Posted by dijos
10-15 lbs a day? I never Knew.
My 120 psi 23s lose about 10 psi/day.
You should look seriously at a floor pump, btw. They aren't expensive.
__________________
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
#8
Walks with a limp
Thread Starter
Join Date: Nov 2006
Location: Indy, IN
Posts: 1,346
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Well, I took the tube out, because it wouldn't hold air at all. (the rear tube is magically ok for some reason), and the whole valve had ripped out of the tube. I beleive this was Operator error when I installed the tubes, cranking the valve stem retaining nut all the way down before I initially inflated the tires.
Thanks for everybody's help.
Thanks for everybody's help.