valves and pumps
02-22-06, 11:23 AM
#2
Senior Member
Join Date: Sep 2001
Location: Montreal
Posts: 6,521
Bikes: Peugeot Hybrid, Minelli Hybrid
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
The chuck that attaches the pump to the valve are different. The schrader valve includes a spring that holds the valve shut. The chuck for the schrader valve has a pin in the middle that holds the valve open while the chuck is attached. The presta valve is held closed by the pressure in the tire, but the valve has a little nut that holds it shut when not being pumped. You have to loosen this nut before you attach the pump chuck. Some pumps have chucks that have to be taken apart to convert from one style to the other, others have double heads, and some chucks recognize the valve type as you put the chuck on and reconfigure themselves accordingly.
02-22-06, 11:36 AM
#3
Senior Member
Join Date: Dec 2004
Location: Quahog, RI
Posts: 1,509
Bikes: Giant TCR Comps, Cdale R5000, Klein Q-Pro, Litespeed Siena, Piasano 105, Redline Conquest Pro, Voodoo Bizango, Fuji Aloha
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Also, you can get an adapter to use a shrader pump with a presta stem. Run ya few bucks.
