Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the May Giveaway for a Road Electric Bike Hurricane from KBO


Presta valve broken
#1
While removing the pump head after pumping, the presta valve got broken. I then reinserted the pump to check whether it can sill be pumped, and all of a sudden the remaining needle is lost ( might have gone inside the tube). Is there any way to fix it without changing the whole tube?

And if I need to change the tube, then what would be the tube size? My bike is Giant OCR3 2009 model.

[Image: 20140413_153009.jpg]
  Reply
#2
You need a new tube.

What is the tire size? Look on the tire for some numbers like: 37-622 or 40-559 or 700c x 28 or 26 x 1.75 From that information, you can determine which tubes will work.

When removing the valve chuck, ALWAYS hold on to the valve stem with your other hand.
Nigel
  Reply
#3
Looks like a 25mm 700c (25 x 622)
  Reply
#4
Thanks guys. It is 700c x 25. My local store only sell 700c x 19/23. Would this tube cause any problem?
  Reply
#5
700 x 23 tube will be fine.
Generally no problem to use a tube that's slightly narrow (the second number is the width)
  Reply
#6
Or slightly larger; ± 20% is okay; butyl rubber stretches a great deal. My front tire on my WT is a 28-630; and the tube inside is intended for 35 to 45 - 622.
Nigel
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
I think I might of been a little too has...
Today 02:03 AM
Have you Ever Tried an Electric Bike?
05-09-2021 09:14 AM
2018 Specialized Stumpjumper Comp Alloy ...
05-08-2021 09:31 PM
Schwinn 3rd Avenue 700C hybrid
05-08-2021 02:33 AM
Trek 720 (1997) Drive Train (Crank & Der...
05-07-2021 04:06 PM
Square-Taper BB 68 (1.37 24T) Crank-Arm ...
05-07-2021 01:52 PM
How to Approach Questionable Deals
05-07-2021 01:23 AM
2021 Pro Road Cycling
05-05-2021 01:10 PM
Loose seat stem housing on Trek Madone 9...
05-05-2021 08:53 AM
1962 Varsity - Move Stem Shifters Ok?
05-05-2021 12:40 AM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
27 posts
no avatar 2. ChaseCal
6 posts
no avatar 3. Stephen111
4 posts
no avatar 4. Papa Dom
4 posts
no avatar 5. JoJoJo
3 posts