Threaded/smooth presta valves and a stupid pump
#1
Thread Starter
Toledo Ohio
Joined: Jul 2008
Posts: 81
Likes: 0
Threaded/smooth presta valves and a stupid pump
So, intially replaced my original threaded valve rear tube with a smooth one because my stupid pump got stuck on the threads, and I broke the valve trying to get it off. Two days later, the valve separates from the tube at the base of the smooth valve. I took it back to the LBS, they put a threaded tube in. Not long after, the pump gets stuck on the valve and it breaks as I try to remove it once again. Went to a different LBS that I have never been too today, they put in a smooth tube. I check the pressure before I ride, by the time I get home and put the bike in the garage, the tire is completely flat. I try to pump it up, the seal broke again at the base of the tube.
First, anyone have any suggestions on a pump that wont break me, and two, is my rear wheel haunted or something? Am I the only person in the world that can't pump a tire?
First, anyone have any suggestions on a pump that wont break me, and two, is my rear wheel haunted or something? Am I the only person in the world that can't pump a tire?
#3
cab horn

Joined: Jun 2004
Posts: 28,353
Likes: 31
From: Toronto
Bikes: 1987 Bianchi Campione
#6
Senior Member
Joined: Jun 2007
Posts: 12,257
Likes: 5
From: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
also might want to check for any burrs on the inside of the rim where the valve goes.
I don't understand how you guys manage to destroy tubes at the valves, I've never been able to do it
I don't understand how you guys manage to destroy tubes at the valves, I've never been able to do it
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
#9
Senior Member
Joined: Aug 2005
Posts: 1,936
Likes: 0
You may be having a problem with technique, but it's also possible that the little ring that keeps the rubber seal in the pump head is too tight. This compresses the rubber seal too much and it makes it too tight on the valve stem. Try loosening it a bit. Are you buying excessively delicate latex tubes or something? If so, you should maybe try just ordinary, much cheaper butyl tubes.
#10
Junior Member
Joined: Mar 2008
Posts: 152
Likes: 39
From: Cecil County, Maryland
Bikes: 2013 Jamis Dragon Race
Sounds like you spent good money on a bike, but skimped out on the supporting hardware.
Buy a Topeak Joe Blow Pro floor pump. I have one and its one of the best one that I have ever used.
https://www.performancebike.com/shop/...tegory_ID=4360
Buy a Topeak Joe Blow Pro floor pump. I have one and its one of the best one that I have ever used.
https://www.performancebike.com/shop/...tegory_ID=4360
#11
Senior Member
Joined: Sep 2006
Posts: 260
Likes: 0
From: Tucson, AZ
Bikes: 1993 Specialized Allez, 2003 Gios A70 Ultralite, 2002 Rossin Synthesis
If your valve is separating from the tube, this is the first thing I would check. Make sure the rim tape is fully covering the valve hole and there are no sharp edges.
And threaded valves suck. I always go with the smooth Michelin ones, but Specialized and many other companies make tubes with smooth valves.
And threaded valves suck. I always go with the smooth Michelin ones, but Specialized and many other companies make tubes with smooth valves.
#12
Medicinal Cyclist
Joined: Aug 2008
Posts: 2,807
Likes: 0
From: Mohawk Valley/Adks, NYS
Bikes: 2003 Klein Q Carbon Race; 2009 Giant OCR-1
I prefer the smooth valve stems, too. I had trouble with my Park Tools floor pump holding on to the valve stem during pumping, which was disconcerting. Now I just rough it up with a piece of course sandpaper and the pump grips it nicely. Flip up the retaining lever, and it always pops right off. I agree, threaded valves suck.





