Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Pump tires?

Old 07-08-07, 05:15 AM
  #1  
pivoxa15
Senior Member
Thread Starter
 
Join Date: Jun 2006
Posts: 103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Pump tires?

To pump road bike tires, is the rule to empty all the air in the wheel first then pump the air in? How do I judge how much air is enough?
pivoxa15 is offline  
Old 07-08-07, 05:21 AM
  #2  
foomonkey
Senior Member
 
Join Date: Dec 2006
Posts: 176
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
no, you just want to top off the pressure. pick up a floor pump with a built in pressure guage. this one will work:

http://www.performancebike.com/shop/...tegory_ID=4360
foomonkey is offline  
Old 07-08-07, 05:23 AM
  #3  
KevinF
Keep on climbing
 
Join Date: Apr 2004
Location: Marlborough, Massachusetts
Posts: 2,179

Bikes: 2004 Calfee Tetra Pro

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You don't need to empty all the air first, although you do need to release some -- just release a half second worth first and then start pumping. As for what pressure -- most people ride somewhere around 110psi. Your tires will have a maximum PSI printed on their side somewhere; but there's no reason to go that high.
KevinF is offline  
Old 07-08-07, 05:59 AM
  #4  
RonH
Life is good
 
RonH's Avatar
 
Join Date: Jan 2001
Location: Not far from the Withlacoochee Trail. 🚴🏻
Posts: 18,213

Bikes: 2001 Litespeed Tuscany, 2018 Lynskey Helix Pro

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 519 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by pivoxa15
How do I judge how much air is enough?
Look on the side of your tire for the recommended or max pressure.
__________________
The LORD is merciful and gracious, slow to anger, and plenteous in mercy. - Psalm 103:8

I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.
RonH is offline  
Old 07-08-07, 07:39 AM
  #5  
Longfemur
Senior Member
 
Join Date: Aug 2005
Posts: 1,936
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You don't really need to do anything, but I've always found that with Presta valves, it's best to tap on it to release a bit of pressure after unscrewing it, just to help it from staying stuck closed as you try to pump air in. But you don't need to empty the air in the tire.

As far as knowing when enough is enough... if you're out on the road and you have fixed a flat, then re-inflated with your little frame pump, you just pump it up by feel (you are unlikely to be able to put too much air in anyway, as it gets very hard to keep pumping). Other than that, you should be buying and using a floor pump, and preferably one that has a gauge on it to make it easier. Every tire size and brand/quality will be different. It will tell you what the range of pressure is on the sidewall. If you are about average weight, anywhere from the middle of that range and up, if you are heavyweight, at the higher end, and if you're a lightweight, low to mid-range is good. You don't want the tire rock hard when you ride. It's supposed to cushion the ride a little, but you also don't want it too soft (the ride gets sluggish, plus you can get pinch flats on bumps). Experiment with it until it feels right.

One word of caution...

Tire manufacturers know that consumers know quality tires can take higher pressures. There is a tendency for them to put very high numbers on their tires. It doesn't mean you have to ride them like that.
Longfemur is offline  
Old 07-08-07, 05:04 PM
  #6  
pivoxa15
Senior Member
Thread Starter
 
Join Date: Jun 2006
Posts: 103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by foomonkey
no, you just want to top off the pressure. pick up a floor pump with a built in pressure guage. this one will work:

http://www.performancebike.com/shop/...tegory_ID=4360

I have one of these but without a meter as shown in this pump. There is only a little meter attached to the head on the left in the head of the pump. It's unfortunate because when you pump it, you can't even see it as it is facing the ground.

Speaking about the head of the pump as shown in the picture, when one is pumping should the lift on the right or at the back of the head be pulled up or down? What is the purpose of it as air seems to flow out regardless of its position.
Attached Images
File Type: jpg
40-2201-NCL-HEAD.jpg (22.4 KB, 8 views)

Last edited by pivoxa15; 07-08-07 at 05:15 PM.
pivoxa15 is offline  
Old 07-08-07, 05:08 PM
  #7  
pivoxa15
Senior Member
Thread Starter
 
Join Date: Jun 2006
Posts: 103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by KevinF
You don't need to empty all the air first, although you do need to release some -- just release a half second worth first and then start pumping. As for what pressure -- most people ride somewhere around 110psi. Your tires will have a maximum PSI printed on their side somewhere; but there's no reason to go that high.
The thing is when I am going to pump the tire, I unscrew the lid and open the valve. But any little push down the valve will release the air. So to pump the tire there is a push downwards and naturally will release air and when not all of the air is released it seems hard to pump more in. Should it be done with 2 people?
pivoxa15 is offline  
Old 07-08-07, 05:18 PM
  #8  
waterrockets 
Making a kilometer blurry
 
waterrockets's Avatar
 
Join Date: May 2006
Location: Austin (near TX)
Posts: 26,124

Bikes: rkwaki's porn collection

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I'm confused. You just tap the valve to get it unstuck (it tends to stick a little). Then you can pump it up to top it off. Since the pressure is still high in the tire, no air is going to go in until you match the tire pressure with the hose pressure, then go beyond that presure. This will mean that maybe only the last 3 inches up pump stroke are going to put any air in the tire. This is normal.
waterrockets is offline  
Old 07-08-07, 05:34 PM
  #9  
skydive69
Senior Member
 
skydive69's Avatar
 
Join Date: Sep 2004
Location: Seminole, FL
Posts: 2,258

Bikes: Guru Geneo, Specialized Roubaix Pro, Guru chron 'alu, Specialized Sequoia

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
When we finally figure out how to get air in the tire, I want to go on to the proper way of dishing my Zipp 404 wheels.
skydive69 is offline  
Old 07-08-07, 05:51 PM
  #10  
Berg417448
Troublemaker
 
Berg417448's Avatar
 
Join Date: Jan 2005
Location: Earth
Posts: 427

Bikes: Yes. The more the better.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 28 Post(s)
Liked 7 Times in 5 Posts
Originally Posted by pivoxa15
Speaking about the head of the pump as shown in the picture, when one is pumping should the lift on the right or at the back of the head be pulled up or down? What is the purpose of it as air seems to flow out regardless of its position.

Once you push the pump head onto the valve you flip that lever up to lock it in place.
Berg417448 is offline  
Old 07-09-07, 08:21 PM
  #11  
pivoxa15
Senior Member
Thread Starter
 
Join Date: Jun 2006
Posts: 103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Let me get this straight. When you want to pump air in, first you unscrew the lid then you push the head in and lift the lever and start pumping.

If you want to get rid of air, you unscrew the lid then unscrew the little bolt type of object then push down the 'pin' and the air goes out very quickly. But this bolt type of object dosen't have to be unscrewed if I only want air to get in?
Just say I wanted to get rid of all the air and want to pump air in again. Should I tighten the bolt then pump air in again or keep it loosened and pump? If its loosened then any pressure exerted on the pin would allow air to escape again.
pivoxa15 is offline  
Old 07-09-07, 08:42 PM
  #12  
Duke of Kent
Senior Member
 
Duke of Kent's Avatar
 
Join Date: Jul 2005
Location: Blacksburg, VA
Posts: 4,850

Bikes: Yeti ASRc, Focus Raven 29er, Flyxii FR316

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I can't believe I'm responding to this, but I feel obligated to help you:

1) Unscrew valve on tube. Push down to let a little air out.
2) Place pump head over valve, push down so valve enters pump head.
3) Take lever on pump head, rotate from parallel to hose to perpendicular to hose.
4) Pump tires to desired PSI.
5) Rotate lever on pump head back to starting position.
6) Firmly but gently pull straight (direction tube's valve is pointing) away from the rim.
7) Screw the valve tight again.

If you don't get these directions...
Duke of Kent is offline  
Old 07-09-07, 08:56 PM
  #13  
JBD
French Warmonger
 
JBD's Avatar
 
Join Date: Mar 2006
Location: Greetings from Michigan The Great Lake State
Posts: 350

Bikes: Lyon Follis, raleigh sportif, giant unknown, centurian lemans r.i.p.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Duke of Kent
I can't believe I'm responding to this, but I feel obligated to help you:

1) Unscrew valve on tube. Push down to let a little air out.
2) Place pump head over valve, push down so valve enters pump head.
3) Take lever on pump head, rotate from parallel to hose to perpendicular to hose.
4) Pump tires to desired PSI.
5) Rotate lever on pump head back to starting position.
6) Firmly but gently pull straight (direction tube's valve is pointing) away from the rim.
7) Screw the valve tight again.

If you don't get these directions...
it doesn't get much more thorough than this

3) Take lever on pump head, rotate from parallel to hose to perpendicular to hose.
do you mean to say the opposite? as in to flip the lever from being perpendicular to the hose to being parallel?
JBD is offline  
Old 07-09-07, 09:05 PM
  #14  
2Tired2Shift
Banned.
 
2Tired2Shift's Avatar
 
Join Date: Aug 2006
Posts: 1,277
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Is this thread a joke?
2Tired2Shift is offline  
Old 07-09-07, 09:31 PM
  #15  
grahny
hobo
 
grahny's Avatar
 
Join Date: Sep 2005
Location: CO
Posts: 3,784
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I fill my tires with a fresh can of perriair for each ride

grahny is offline  
Old 07-09-07, 09:34 PM
  #16  
Pugsly
Ride to Ride
 
Pugsly's Avatar
 
Join Date: Jun 2007
Location: Cary, NC
Posts: 641

Bikes: Fuji C7 full DA

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I always just call AAA when I need air in my tires. They change flats too.
Pugsly is offline  
Old 07-10-07, 12:45 AM
  #17  
pivoxa15
Senior Member
Thread Starter
 
Join Date: Jun 2006
Posts: 103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Duke of Kent
I can't believe I'm responding to this, but I feel obligated to help you:

1) Unscrew valve on tube. Push down to let a little air out.
2) Place pump head over valve, push down so valve enters pump head.
3) Take lever on pump head, rotate from parallel to hose to perpendicular to hose.
4) Pump tires to desired PSI.
5) Rotate lever on pump head back to starting position.
6) Firmly but gently pull straight (direction tube's valve is pointing) away from the rim.
7) Screw the valve tight again.

If you don't get these directions...
Thanks. Why push down to let a little air out? What happens if I don't do that?
pivoxa15 is offline  
Old 07-10-07, 12:58 AM
  #18  
Mach42
Senior Member
 
Join Date: Sep 2005
Location: Salt Lake City, UT
Posts: 643

Bikes: 2005 Scattante R660 Triple, 2006 Specialized Rockhopper Comp Disc

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by pivoxa15
Thanks. Why push down to let a little air out? What happens if I don't do that?
The valve tends to stick a little after it's been sitting in a tightened state for a day. Tapping the valve makes it unstick, which makes it easier to get that first rush of air.

As you put in that first pump stroke, you'll hear the valve make a slight "tack" sound when the first rush of air goes in. That's the valve releasing, and tapping it just makes it release earlier in the stroke because it's not stuck.
Mach42 is offline  
Old 07-10-07, 03:43 AM
  #19  
fujibike
Senior Member
 
fujibike's Avatar
 
Join Date: May 2003
Location: Delaware
Posts: 369
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Duke of Kent
I can't believe I'm responding to this, but I feel obligated to help you:

1) Unscrew valve on tube. Push down to let a little air out.
2) Place pump head over valve, push down so valve enters pump head.
3) Take lever on pump head, rotate from parallel to hose to perpendicular to hose.
4) Pump tires to desired PSI.
5) Rotate lever on pump head back to starting position.
6) Firmly but gently pull straight (direction tube's valve is pointing) away from the rim.
7) Screw the valve tight again.

If you don't get these directions...
If they have a cap on the valve they may never get their tires inflated!!!!
fujibike is offline  
Old 07-10-07, 04:06 AM
  #20  
KevinF
Keep on climbing
 
Join Date: Apr 2004
Location: Marlborough, Massachusetts
Posts: 2,179

Bikes: 2004 Calfee Tetra Pro

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by pivoxa15
I have one of these but without a meter as shown in this pump. There is only a little meter attached to the head on the left in the head of the pump. It's unfortunate because when you pump it, you can't even see it as it is facing the ground.

Speaking about the head of the pump as shown in the picture, when one is pumping should the lift on the right or at the back of the head be pulled up or down? What is the purpose of it as air seems to flow out regardless of its position.
The pump you have pictured looks like a portable one used primarily for fixing flats along the side of the road. You'll get enough air pressure with that to get yourself home, but getting to "optimal" air pressure with a portable pump is nearly impossible and certainly not something you'd want to do on a regular basis. Get a floor pump with a gauge!
KevinF is offline  
Old 07-10-07, 07:13 AM
  #21  
Terex
Senior Member
 
Terex's Avatar
 
Join Date: Jan 2005
Location: 7600' Northern New Mexico
Posts: 3,614

Bikes: Specialized 6Fattie, Parlee Z5, Scott Addict

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Can you fill Italian tires with German air, and German tires with Italian air? And what about water bottles? If you're running full Campy, can you fill your bottles with Gerolsteiner water? This is all so confusing...
Terex is offline  
Old 07-10-07, 07:17 AM
  #22  
shabbasuraj
Senior Member
 
shabbasuraj's Avatar
 
Join Date: Mar 2005
Posts: 1,570
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Fill with nitrogen... for more performance... allegedly..
shabbasuraj is offline  
Old 07-10-07, 07:41 AM
  #23  
Longfemur
Senior Member
 
Join Date: Aug 2005
Posts: 1,936
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
These things are not always obvious to new people not familiar with presta valves...

The lever on the pump head has nothing to do with the airflow. It's really just to clamp the pump head onto the valve stem so you don't have to hold it on by hand while you're pumping. Presta valves on road bikes don't let air out of the tire when you put the pump head on or off. They don't work like the valves on your car tires. As long as you push the pump head in straight and pull it off straight, no air will be released. What you hear when you take the pump off the stem is the air pressure built up in the pump itself, not air from the tire. Maybe you should ride over to your local bike shop and have them show you how to do this?
Longfemur is offline  
Old 07-10-07, 07:49 AM
  #24  
GP 
Senior Member
 
GP's Avatar
 
Join Date: May 2004
Posts: 7,631
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 28 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by Longfemur
Maybe you should ride over to your local bike shop and have them show you how to do this?
That's a good idea. I've been over at the local shop when the owner has shown people how to remove a wheel and how to put a tire on. If you've never filled a presta valve, you don't have a riding partner to show you how and you don't want to damage the valve, I can understand the confusion.
GP is offline  
Old 07-10-07, 09:23 AM
  #25  
Terex
Senior Member
 
Terex's Avatar
 
Join Date: Jan 2005
Location: 7600' Northern New Mexico
Posts: 3,614

Bikes: Specialized 6Fattie, Parlee Z5, Scott Addict

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Also, lot's of good info on tire repair, including explanation of valve types at http://www.parktool.com/repair/readhowto.asp?id=100

Park Tool site has lot's of good info (with pictures) on basic bike repairs.
Terex is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.