Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Thread Tools Search this Thread
Old 10-15-07, 03:42 PM   #1
Senior Member
Thread Starter
Join Date: Sep 2007
Posts: 84
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
speakin' of pump problems ...

I have a Topeak Joe Blow sport or whatever the blue one is, and it's recently started acting funny. The pump handle sometimes "rebounds" on me when pumping, and the gauge will not read on MTB tires unless I hold the pump handle down when I pump it (it reads fine with 80+ psi road tires).

Any clue what's wrong with it? I hate to toss the whole thing over some small problem.
krash is offline   Reply With Quote
Old 10-15-07, 06:03 PM   #2
Join Date: Jan 2006
Location: Homestead FL
Bikes: Nashbar X-Cross 29r wheels front disc brake
Posts: 685
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I suspect condensation buildup may be the cause. I had two cheap pumps blow out the same night. They were both full of condensation inside. My new pump, a Nashbar Orange had water bubbling out of the valve fitting after only two tire inflations. I live where the relative humidity is always high and I suspect this contributes.

What to do? I don't know except disassembling the pump as much as possible and cleaning it up.
TRUMPHENT is offline   Reply With Quote
Old 10-15-07, 08:07 PM   #3
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 30,335
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 692 Post(s)
Most pumps have either a ball check or a flap check valve in the base to prevent air backflow. Inspect this valve to see if it's rusty or stuck open. Clean as needed and the pump should go back to working properly.
HillRider is online now   Reply With Quote
Old 10-29-07, 05:53 PM   #4
Accessory guy
Join Date: Oct 2007
Location: Pacific NorthWest
Bikes: Several
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

Any issues with regard to Topeak products can be resolved by getting in contact with the kind people in the customer service group. Here's the link:
2wheeladdict is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 07:33 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    get answers from real people!
Click to start entering your question.