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Are Presta valve caps uncool or what?

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Are Presta valve caps uncool or what?

Old 02-03-18, 11:15 PM
  #1  
RockiesDad
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Are Presta valve caps uncool or what?

Looking at a lot of bike photos recently and I noticed that a lot of them don't have valve caps on. Is it because they fell off or got lost or purposely being left off? I leave mine on thinking that they would help keep the air in my tires in case the needle is loose or something.

Just wondering if its cool factor to leave it off???
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Old 02-03-18, 11:27 PM
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The caps are a shield against dirt getting into the internals, they won't keep the air from leaking out if the valve isn't tight, hence the name "dust caps".
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Old 02-03-18, 11:34 PM
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Yup, valve caps are uncool.

Which is why I use them.

And to keep my valve stem nut company, so it's not uncool alone.

Besides, they look better with my argyle socks, black knee warmers and navy blue shorts.
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Old 02-03-18, 11:43 PM
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I too like them, and never go without. Some of mine are anodized aluminum, in colors that match the bike... Very Cool!
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Old 02-04-18, 12:25 AM
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Bout as uncool as dork discs and reflectors. I'm uncool tho...
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Old 02-04-18, 12:48 AM
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Sure, but what about the weight? Not to mention the wind resistance.


Knurled Knut is great, though. Keeps short valve stems from sinking inside the wheel when connecting the pump to a flat tire.
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Old 02-04-18, 02:01 AM
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I have never heard a professional racer claim he lost a race because he forgot to remove his valve caps
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Old 02-04-18, 03:17 AM
  #8  
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Knurled-knuts on every stem tightened up to black piece of Gorilla Tape on rim

Green valve cap front, orange valve cap rear, Propel is White/Black and Roubaix Expert is Red

Looks fine to me.
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Old 02-04-18, 05:25 AM
  #9  
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've never used them simply because they don't do anything. Never had a dirt problem in my tubes' internals either.
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Old 02-04-18, 07:45 AM
  #10  
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To me the presta valve caps just don't look aerodynamic and are unnecessary since there is already a screw to tighten the valve. I also like the lock ring holding the valve firm against the rim.

I have some bikes with schrader valves, and on those I do prefer some type of cap. For some reason, a bare schrader valve doesn't look right. I use these truck type caps that gives somewhat of a presta look.
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Old 02-04-18, 08:25 AM
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Originally Posted by Deal4Fuji View Post
I have some bikes with schrader valves, and on those I do prefer some type of cap. For some reason, a bare schrader valve doesn't look right.
Right, and either do presta valves. Like the bike was haphazardly or sloppily assembled or maintained.
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Old 02-04-18, 08:40 AM
  #12  
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More aero and less weight without them, no benefit with them, so what's the question?

I'll put them on unless I dropped one in the grass or forgot, and then I don't sweat it. It's probably not cool looking to have one valve cap and one bare ... but I'd have a lot of not-cool to address long before getting to that point.
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Old 02-04-18, 08:40 AM
  #13  
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Only uncool for poseurs.
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Old 02-04-18, 08:48 AM
  #14  
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Originally Posted by Nermal View Post
Sure, but what about the weight? Not to mention the wind resistance.


Knurled Knut is great, though. Keeps short valve stems from sinking inside the wheel when connecting the pump to a flat tire.
And also slow down the inflation process by a few secs
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Old 02-04-18, 08:50 AM
  #15  
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Originally Posted by Deal4Fuji View Post
To me the presta valve caps just don't look aerodynamic and are unnecessary since there is already a screw to tighten the valve. I also like the lock ring holding the valve firm against the rim.

I have some bikes with schrader valves, and on those I do prefer some type of cap. For some reason, a bare schrader valve doesn't look right. I use these truck type caps that gives somewhat of a presta look.
Why not just go a little more impressive ...
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Old 02-04-18, 08:52 AM
  #16  
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Originally Posted by canklecat View Post
Yup, valve caps are uncool.

Which is why I use them.

And to keep my valve stem nut company, so it's not uncool alone.

Besides, they look better with my argyle socks, black knee warmers and navy blue shorts.
Those had better be jorts.
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Old 02-04-18, 09:12 AM
  #17  
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I keep presta to schrader adapters on mine, even though I have no need to do so. All my pumps handle schrader valves directly. But even so when I go to top off my tires I unscrew the adapter, unscrew the presta valve nut, re-screw the adapter, pump, unscrew the adapter, screw down the presta nut, an finally re-screw the adapter back on.

I find this unnecessarily complicated process provides me with the perfect balance of convenience and obsessive/compulsive disorder satiation. Additional valve caps for the schrader adapters seem excessive to me; and keeping the presta valves open under the schrader adapters so that they can be used like regular schrader valves seems unsecure to me, even though many people do just that with no adverse consequences.

It is one of the very few OCD things I do.
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Old 02-04-18, 09:15 AM
  #18  
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Originally Posted by Jon T View Post
The caps are a shield against dirt getting into the internals, they won't keep the air from leaking out if the valve isn't tight, hence the name "dust caps".
Jon
I'm pretty sure what he meant wasn't that the caps would hold air pressure but guard against the valve becoming loose accidentally which could then be prone to leaking. Like how a cap on a spray paint can prevents it from loosing its contents...


But really, who cares about a valve cap? They seem to be very prone to falling off, which I would wager counts for the majority of capless valves. I always put the cap on if I have it, but have broke a couple too tight, and others have fell off...
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Old 02-04-18, 09:36 AM
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It's unnecessary.
And for me just boils down to another thing to deal with when I'm trying to very quickly fix a flat and get back on the road.
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Old 02-04-18, 09:38 AM
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I never use them. I see no benefit. I mainly use latex tubes but no matter what air up daily before my ride. They just get in the way. Even on my winter bikes that see weeks and weeks of riding in gunk I've never had a problem.

And just to illustrate the point!



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Old 02-04-18, 09:43 AM
  #21  
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Originally Posted by jamesdak View Post
And just to illustrate the point!



What--only two this time? Why not post the whole menagerie as you usually do?
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Old 02-04-18, 09:51 AM
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Valve caps and jam nuts are simply not needed. It isn't about cool or uncool. There just isn't any benefit.

Not only is there no benefit but using either or both increases time required to fix a flat.

Some people chronically overtighten jam nuts, pulling the tube up through the hole in the rim causing a flat.

Presta valves which push all the way down into the rim are too short. Tubes with longer valves is the answer.

Fumbling with jam nuts and valve caps on the road is just a waste of time.


-Tim-

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Old 02-04-18, 10:08 AM
  #23  
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Originally Posted by Scarbo View Post
What--only two this time? Why not post the whole menagerie as you usually do?
I can't..... I found some pics with caps on. I'm so ashamed of myself.....

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Old 02-04-18, 10:26 AM
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They're absolutely necessary on the rolled up spare tube to keep it from puncturing the tube in storage.

Toss it after installing the tube. Unless you keep the box too...
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Old 02-04-18, 10:54 AM
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I use them only on my brand new spares in my saddle bags.

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