Presta valve caps
12-29-21, 09:30 PM
#26
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Originally Posted by Chuck M
Don't do that. Just take care when using your pump. Presta valves without caps look way sexier than Schrader valves without caps.
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12-29-21, 10:56 PM
#27
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Originally Posted by 3alarmer
...there's a circumcision joke in here somewhere, but it won't be me who makes it.
Presta valves are fine, no need to damage them just pull the pump head straight off no need to jiggle it around. If you are rough with things than yes they can break or at least get damaged, but you just don't have to do that.
My bikes are in various states of having caps and not having them. I have a couple that do happen to have aluminum caps only because they look nice beyond that I don't really care. I might replace if I have it just by force of habit working in a shop but if it cracks or I drop it I will just go without and no issues.
I do however recommend something like this. Never a bad thing to make sure your core is tight and useful for tubeless set ups.
I would love to see a more modern valve at this point but Presta works just fine and I don't really have issues so not really a need and no want for new standards because new standards suck
12-30-21, 08:14 AM
#28
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I agree with the others who say they use them to keep the valve stem clean. That's why I use them. Will they keep the tube from leaking? Maybe, but probably only keeping the valve seat clear from dirt which would prevent a good seat and cause a slow leak.
The only time I had a problem with a presta valve leaking is when I bend the stem. I just bend it back and it it leaks I replace the tube and keep the leaky tube as a spare.
Valve caps are cool. Like the old SNL skit, "More Cow Bells" with Christopher Walken, express yourself!
The only time I had a problem with a presta valve leaking is when I bend the stem. I just bend it back and it it leaks I replace the tube and keep the leaky tube as a spare.
Valve caps are cool. Like the old SNL skit, "More Cow Bells" with Christopher Walken, express yourself!
12-30-21, 08:59 AM
#30
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Originally Posted by BlazingPedals
... Presta valve caps are strictly for style.
12-30-21, 09:11 AM
#32
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Originally Posted by seypat
Those valve caps appear to be a color other than red.
12-30-21, 09:13 AM
#33
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Originally Posted by indyfabz
No. But I have metal valve caps. They are red, so they are the fastest.
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12-30-21, 09:28 AM
#34
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Originally Posted by nomadmax
And make it easier to find the stem when topping up the tires
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12-30-21, 09:29 AM
#35
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+1 check to see if the tube has a removable core, and if it does, is it loose?
BTW, I just now discovered that some Schrader valves also have removable cores and that removing the cores lets you inject sealant into the tube or tubeless tire without gumming up the valve.
I still run tubes on all my bikes and I have never used sealant so none of this really affects me except when I have inadvertently unscrewed and loosened a presta valve core. Accidentally loosening a Schrader valve core would be a lot less unlikely, and I have yet to do it.
BTW, I just now discovered that some Schrader valves also have removable cores and that removing the cores lets you inject sealant into the tube or tubeless tire without gumming up the valve.
I still run tubes on all my bikes and I have never used sealant so none of this really affects me except when I have inadvertently unscrewed and loosened a presta valve core. Accidentally loosening a Schrader valve core would be a lot less unlikely, and I have yet to do it.
12-30-21, 09:36 AM
#36
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This is almost as fun as a chain lube thread.
12-30-21, 10:07 AM
#37
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Originally Posted by tcs
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12-30-21, 10:30 AM
#38
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Originally Posted by Rdmonster69
https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulletin/1280x960/1098_pic_5da466ec8a6657106765c4278738a7f679b78817.jpgRed is def fastest !!
Last edited by 79pmooney; 12-30-21 at 10:33 AM. Reason: Read the next post
12-30-21, 10:35 AM
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Originally Posted by 79pmooney
???? That valve cap looks black. Jeff beat me. I answered before reading the next post. (This is a thread about valve caps, not frame paint.)
12-30-21, 10:36 AM
#40
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Originally Posted by Rdmonster69
Red is def fastest !!
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12-30-21, 10:40 AM
#41
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Originally Posted by Rdmonster69
Red is def fastest !!
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Last edited by rsbob; 12-30-21 at 10:46 AM.
12-30-21, 10:42 AM
#42
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Originally Posted by rsbob
That’s why the cops I know call it “Arrest me red”.
12-30-21, 11:02 AM
#43
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Originally Posted by Rdmonster69
If it was an "S" version I would have never sold it. I bought a Trek Domane SLR 6 this summer. If I would have added a little to it I could have bought an well cared 08 1098S ....at least the Domane is red too !!
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12-30-21, 11:07 AM
#44
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Originally Posted by Rolla
Nope. The plastic cap won't keep air in the tube; they don't seal tight enough, and if the valve is open, the cap will just push down on it and make it leak faster.
The only use I have for a presta cap is as an emergency shraeder adapter. Cut off the tip, turn it upside down, and screw it on. You can then use a shraeder pump or gas station compressor.
https://www.purecycles.com/blogs/bic...hrader-adapter
The only use I have for a presta cap is as an emergency shraeder adapter. Cut off the tip, turn it upside down, and screw it on. You can then use a shraeder pump or gas station compressor.
https://www.purecycles.com/blogs/bic...hrader-adapter
Otto
12-30-21, 12:53 PM
#45
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Originally Posted by Rdmonster69
If it was an "S" version I would have never sold it. I bought a Trek Domane SLR 6 this summer. If I would have added a little to it I could have bought an well cared 08 1098S ....at least the Domane is red too !!
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01-01-22, 07:57 PM
#46
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Originally Posted by BobbyG
+1 check to see if the tube has a removable core, and if it does, is it loose?
BTW, I just now discovered that some Schrader valves also have removable cores and that removing the cores lets you inject sealant into the tube or tubeless tire without gumming up the valve.
I still run tubes on all my bikes and I have never used sealant so none of this really affects me except when I have inadvertently unscrewed and loosened a presta valve core. Accidentally loosening a Schrader valve core would be a lot less unlikely, and I have yet to do it.
BTW, I just now discovered that some Schrader valves also have removable cores and that removing the cores lets you inject sealant into the tube or tubeless tire without gumming up the valve.
I still run tubes on all my bikes and I have never used sealant so none of this really affects me except when I have inadvertently unscrewed and loosened a presta valve core. Accidentally loosening a Schrader valve core would be a lot less unlikely, and I have yet to do it.
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01-01-22, 08:14 PM
#47
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For more than 40 years I've never kept the caps or the nut that Presta valves come with on the valves, and never had a problem. I did have issues with a couple of cheap valves found on Slime tubes I used once. However, on my touring bike I leave the cap on since that bike will see a lot more rain and dirt, so I felt I would rather be safe than sorry while far from home.
Anyway, all Presta tubes come with the cap and nut, you don't need to keep the old ones unless they're some specific color you like you can't find on the new tube.
Anyway, all Presta tubes come with the cap and nut, you don't need to keep the old ones unless they're some specific color you like you can't find on the new tube.
01-01-22, 10:32 PM
#50
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Rule 60. From the good book: https://www.velominati.com/
“Ditch the washer-nut and valve-stem cap.You are not, under any circumstances, to employ the use of the washer-nut and valve-stem cap that come with your inner-tubes or tubulars. They are only supplied to meet shipping regulations. They are useless when it comes to tubes and tires”. Amen
“Ditch the washer-nut and valve-stem cap.You are not, under any circumstances, to employ the use of the washer-nut and valve-stem cap that come with your inner-tubes or tubulars. They are only supplied to meet shipping regulations. They are useless when it comes to tubes and tires”. Amen
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