Valve Extender
872
Member
884 days
tsilcyc posted 15 weeks ago.
1. Make sure you have the right tubes. There are tubes with valves that have flat spots. These are for removing the valve. These are no good to use with extenders, they allow air to sneak out.
2. Use Teflon tape on your valves to ensure a proper seal.
3. You can give the valve a quarter turn twist with plyers to ensure the valve doesn't close.
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415 days
vistring posted 15 weeks ago.
Do you have to leave the valve extender on the valve? I have always left my on the tube when I ride, but after looking that picture manual on topeak's site, it looks like you can remove them after you inflate the tire? Is the correct?
I could unscrew the working extender off the front tire and use it to inflate the rear if this is the case.
23
Member
115 days
warrenp posted 15 weeks ago.
i have zipp flashpoint wheels. I was told by several people that the valve extenders just SUCK and many people don't even bother with them. I just use tubes with 80mm valves and threw the valve extenders in the junk draw. I'm not saying they don't work but i just heard from enough people they don't like they. The only downfall is some places don't stock the 80mm, even the 60's weren't long enough. I always buy 10 at a time as i ride over 2500km a year and expect the flats.
good luck
872
Member
884 days
tsilcyc posted 15 weeks ago.
vistring wrote:
Do you have to leave the valve extender on the valve? I have always left my on the tube when I ride, but after looking that picture manual on topeak's site, it looks like you can remove them after you inflate the tire? Is the correct?I could unscrew the working extender off the front tire and use it to inflate the rear if this is the case.
You want to leave the valve extender on the valve.
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tsilcyc posted 15 weeks ago.
warrenp wrote:
i have zipp flashpoint wheels. I was told by several people that the valve extenders just SUCK and many people don't even bother with them. I just use tubes with 80mm valves and threw the valve extenders in the junk draw. I'm not saying they don't work but i just heard from enough people they don't like they. The only downfall is some places don't stock the 80mm, even the 60's weren't long enough. I always buy 10 at a time as i ride over 2500km a year and expect the flats.
good luck
The problem is this...
This valve has a removable core. Notice the flat spot? Air bleeds around it. You don't even notice this when you're buying tubes. In fact, I find more tubes like this than not. Just look for valves that are completely round, wrap them in Teflon and you will have no problem with valve extenders again.
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128
Member
172 days
J.Michael posted 15 weeks ago.
I love the tufo valve extenders. although, you'd want to buy at least 3.
2 for the set, and 1 for the flat.
12
Member
192 days
sharkbait posted 15 weeks ago.
Vittoria Value Extenders work well. Buy the tubes with the removable cores. You take the core out, screw on the extender, and then screw the core back in. They never, ever, ever, leak. They give you the little tool to do this, and you can stick it in your saddle bag, or if you don't use one, in your jersey or patch kit.
I got a ton, and pre-install them on my two tubes that I carry when I race. I use them with 80mm stem tubes. I get mine at Excel Sports, but I'm sure they're widely available.
http://www.excelsports.com/new.asp?page=8&description=Presta+Valve+Extenders(Pair)&vendorCode=VITT&major=1&minor=31
203
Member
1192 days
ht001 posted 15 weeks ago.
+1 on using teflon tape to ensure a good seal.
+1000 on buying tubes with 80mm valves. Gets rid of the whole extender issue and makes for a happy rider! :)
1841
Member
1090 days
tri-ac posted 15 weeks ago.
tsilcyc wrote:
The problem is this...
This valve has a removable core. Notice the flat spot? Air bleeds around it. You don't even notice this when you're buying tubes. In fact, I find more tubes like this than not. Just look for valves that are completely round, wrap them in Teflon and you will have no problem with valve extenders again.
I had this problem with my rental wheels this year! What a frustration that was...thank you for a very clear explanation & photo!!!
Adam
Tri-ac
83
Member
415 days
vistring posted 15 weeks ago.
ht001 wrote:
+1 on using teflon tape to ensure a good seal.+1000 on buying tubes with 80mm valves. Gets rid of the whole extender issue and makes for a happy rider! :)
Do they sell tubular tires in 650 with 80mm valves. I seem not to able to find them.
Alright I am pretty new valve extenders.
My rear valve extender (topeak) has been leaking when inflating the tire. I have been able to get it up to PSI and then pull the nozzle off quickly, so it is pretty much up to pressure. Today the $#%# extender came off stuck to the nozzle head of the pump.
Besides ordering a replacement valve from %#$# topeak. I have a zipp extender laying around, which I can screw on the presta valve, but when I go to inflate it it doesn't feel like it is doing anything, and the PSI meter just goes up and down with alot of air going out. When I pinch the tire, it feels almost up to pressure but the pump will not give me a reading.
1. Can I screw the Zipp extender on and pump up the tire?
2. When I get the replacement extender can I just screw it on, or do I have to rip off the tire put the extender on and then re-glue?
3. Are aero rims usually this annoying?
I am all bike maintenance, but it seems I like I spending more time with faulty parts this past month... this is why I love running. I'd take to my LBS, but they are 45 minutes away.
Thanks for any help.