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Cycling - Road, Mountain, Fun, Racing

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  FORUM:   General Team Discussion Forum
TOPIC:   Presta valves 


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DDOORN
DDOORN's Photo Posts: 23,046
7/12/11 9:22 P

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Don't know why I had trouble, but when I got my $1.83 adapter for our schaffer pump I couldn't for the life of me get 'er on the tire!

Finally bit the bullet and bought a Cannondale pump that works like a charm!

Don

Co-Team Leader for All Health Pros, Binghamton Area Losers & Laid Off But Staying Strong SparkTeams

Don't die with your music still in you. -- Dr. Wayne Dyer

"We either make ourselves miserable or we make ourselves strong. The amount of work is the same." --- Carlos Castaneda

"You yourself, as much as anybody in the entire universe, deserve your love and affection." --- Buddha

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GIANT-STEPS
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7/12/11 9:19 P

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Not at all, I leave one on all the time like a valve cap just in case I need to get air from a non-bikie.



TAMIK1964
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7/12/11 7:43 P

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Thanks for all the great tips. Tonight I gave it another try and unscrewed the presta valves a little farther. Worked like a charm!!! I have 2 adapters. Is there anything wrong with just leaving the adapters on the valves?

Tami

If it is to be it is up to me.


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GIANT-STEPS
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7/12/11 12:29 P

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While Presta valves do require a special pump head they do have advantages.

Schrader valves use a spring to close so when pumping the tire you have to defeat the spring with every stroke. It takes more effort to pump up a tire when you have Schrader valves.

Since Presta valves tighten to close rather than relying on a spring they also leak less so you won't have to pump your tires up as often.

For most cyclists the advantages of Presta valves outweight the disadvantages. FWIW, I usually keep an adapter on one of my valves just in case my frame pump fails and I have to get air.



GIANT-STEPS
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7/12/11 12:20 P

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If you are talking about the nuts that tighten against the rim most cyclists don't use them. Some presta valve stems are not even threaded for them.

It sounds like you didn't have the right head for presta valves. I'm partial to the big brass heads that come on Silca Pista pumps. Good bike shops sell them separately so they can be connected to the hose of whatever kind of pump you have.



TOOTHFUL99
TOOTHFUL99's Photo Posts: 499
7/12/11 8:45 A

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One little tip from me, because I tended to rip the stem off while pulling off the pump...

I always purchase tubes with longer valve stems. That way, I can grab onto the base of the stem while pulling off the pump after filling.

It's really cut down on my valve flats.

...and then in the middle of everything, you realize you're alive right now, and the time to live is right now!


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DDOORN
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7/12/11 8:15 A

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Couple tips re: Presta valves:

1) after opening the valve all the way, before pumping, tap the valve a few times until you get some air spritzing out as sometimes a little dirt can plug it and make pumping difficult if not impossible.

2) be OH-SO-CAREFUL when using emergency, hand pumps that strap on your bikes as presta valves bend and ruin so easily. You really have to support the pump like a rock with your non-pumping hand so that you don't jerk the presta valve around. I learned the hard way the first time I did this and ruined the tube.

Don

Co-Team Leader for All Health Pros, Binghamton Area Losers & Laid Off But Staying Strong SparkTeams

Don't die with your music still in you. -- Dr. Wayne Dyer

"We either make ourselves miserable or we make ourselves strong. The amount of work is the same." --- Carlos Castaneda

"You yourself, as much as anybody in the entire universe, deserve your love and affection." --- Buddha

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TENISWHIZ
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7/12/11 7:23 A

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The presta vavles are annoying. And I struggle AFTER getting air into them. Thanks for the link to the air pump. I may look into that b/c I also have trouble sometimes getting the pump off the valve and losing air in the process.

I HAVE ALSO BROKEN THE PRESTA VALVE as well trying to get the darned thing off!!! This is EXTRA annoying b/c that can't be fixed. You need a whole new inner tube!


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SCRUFYNERFHERDR
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7/12/11 6:56 A

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I have a Zefal pump that I purchased with my Bianchi about 20 years ago. It had a Shrader valve with a Presta adapter attached. I finally had to purchase a new pump because I got tired of struggling with the pump head not detaching, once finished inflating, before several pounds of air were lost.

I opted for the SKS Airbase Pro. If interested, you can get it at Tree Fort Bikes: www.treefortbikes.com/product/333222340613
/537/SKS-Airbase-Pro-Floor-Pump.html?t
ab=4
and they'll even do an instant price match. I found it in-stock, and for about $18.00 cheaper at www.outsideoutfitters.com/p-18576-sks-airb
ase-pro-floor-pumps.aspx
. Some people might ask, ''Why not just buy from Outside Outfitters and be done with it?'' Customer loyalty. Tree Fort Bikes has done me right, time and again. Unless that changes, they've won my business. Plus you get free shipping on orders over $125 at Tree Fort.

Regardless, I highly recommend the pump. It's solid, heavy and relatively not too expensive.

Do be aware, you CAN unscrew the tip of the presta valve from the stem. You won't break anything - it's more annoying than anything. On the rarity I do that, I say a few curse words (somewhat customarily), and just screw it back in to where it seats properly (be careful not to cross-thread it). And also be aware that you can actually break the tip off if you bend it while trying to attach the pump. Just exercise some caution and common sense and you'll be fine. And, if you break it and can't get the threaded end replaced, it's great tire changing exercise. (^_^)

As for your question about the retaining nut: I used to be of the mindset that I needed them on my wheels, too. You don't really need them, it's more of a preference. They can also scratch your rims so many people opt to not use them at all. But you'll hurt nothing if you put them on.

You'll get the pump procedure down. Just takes a little trial and error.

Ride safe!


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TOPAHI
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7/11/11 11:11 P

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Here's a link to a picture of open and closed.

www.fitsugar.com/tag/cruiser-bikes

Just to let you know... I've never heard of the website... just the first one I came across with a picture.

Edited by: TOPAHI at: 7/11/2011 (23:12)
Tom

Riding a bike is FUN!
The treadmill is NOT!

Never argue with idiots... They will drag you down to their level and beat you with experience.


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TOPAHI
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7/11/11 11:08 P

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Yes... all the way.
Don't force it though.

Tom

Riding a bike is FUN!
The treadmill is NOT!

Never argue with idiots... They will drag you down to their level and beat you with experience.


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TAMIK1964
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7/11/11 10:56 P

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I do have the adapter. I also unscrewed the tip of the presta but was scared to loosen it too much. I did it far enough that when I pushed on the tip it let air out. Do I need to loosen it even more?

Tami

If it is to be it is up to me.


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TOPAHI
TOPAHI's Photo SparkPoints: (14,026)
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7/11/11 10:47 P

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You need a pump head designed for presta valves, or a cheap little adapter available at any bike shop.
I'm also going to tell you something that you probably already know, and that is to "unscrew" the top of the presta valve all the way to allow air in. You screw it down to close.

Tom

Riding a bike is FUN!
The treadmill is NOT!

Never argue with idiots... They will drag you down to their level and beat you with experience.


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TAMIK1964
TAMIK1964's Photo SparkPoints: (6,479)
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7/11/11 10:26 P

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Are there any tips or things NOT to do when trying to put air in a presta valve. My bike pump didn't seem to be doing the job. I just figured it didn't have enough umph! So I took it to the ex's farm shed to use the air compressor. I need to get some rings (don't know the name of 'em but the little ones that go up against the rim) since these valves don't have any. But even when trying to hold the valve strong enough to get a good seal with the nozzle, it seemed like I was letting more air out than in. Maybe I had the tip of the presta valve too loose or not loose enough under the adapter? Are they usually this tricky?

Thanks in advance for any help :)

Tami

If it is to be it is up to me.


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