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Old 08-24-07, 01:19 PM   #1
mlink22
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very newbie question - pumping a bike

Hi guys, sorry for such a dumb question but I cannot find any info on this.

I need to pump my tires up on my bike. I am no bike expert but I know that they are schrader valves and I am using a small hand pump. "Blackburn Mountain Air". It supports both schrader and Presta valves.

Problem is I can't get an air tight lock on. I've never dealt with schrader valves so while fooling around with it I realized pushing the pin in released all the air and now one tire is completely flat :\

I've had this pump for ages and lost the instructions a long time ago and have never needed to use it till now.

Hope someone can help.
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Old 08-24-07, 01:29 PM   #2
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http://www.bicyclinglife.com/HowTo/ConvertAPump.htm

I think the link aboove may help you convert your pump from schrader to presta. Bet that is why it will not lock on.
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Old 08-24-07, 01:40 PM   #3
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Thanks for the response but I am a bit confused still :\

My tire valve is schrader so I don't think I need to convert my pump to presta. But if I had to all I do is flip the inside piece around I think.

That link did mention lock caps and I assume I do have a lock lever on top but I don't notice anything when I open and close it. No idea how to tighten the cap either if that is the problem.
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Old 08-24-07, 01:42 PM   #4
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Try a local shop for assistance - I can't imagine not getting the 30 seconds of help it will take.
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Old 08-24-07, 02:16 PM   #5
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See if the "nozzle" has a threaded ring around it.
Try tightening it up.
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Old 08-24-07, 03:16 PM   #6
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You've never dealt with Schrader valves? Like on your car, motorcycle, lawnmower, wheelbarrow and kid's bike? Really?
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Old 08-24-07, 04:17 PM   #7
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You've never dealt with Schrader valves? Like on your car, motorcycle, lawnmower, wheelbarrow and kid's bike? Really?
It's possible, really.
As a side not, I've been using computers since the early 80's and had never touched Microsoft Windows until I started using AutoCAD about 3 or 4 years ago. (lots of people don't believe that one)
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Old 08-24-07, 06:20 PM   #8
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You lucky sod!
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Old 08-24-07, 10:54 PM   #9
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Originally Posted by mlink22 View Post
It supports both schrader and Presta valves.

Problem is I can't get an air tight lock on..
This might be the problem. In my experience a pump that can handle both is usually set up for presta valves. You probably need to convert it to a Schrader valve.
Download the manual from http://www.blackburndesign.com/support.html
I don't know if your pump is the same, but it might give you an idea.
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Old 08-25-07, 12:19 AM   #10
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...and please, get a new computer.
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Old 08-25-07, 07:48 PM   #11
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Check the rubber seal in the chuck

I do not knw what your pump looks like, but on some pump models the chuck on the hose end has a reversable rubber sealing thingee. You may be able to remove it, flip it over, replace it and be able to maintain an air tight seal on the valve stem.
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Old 08-25-07, 08:06 PM   #12
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I started using AutoCAD about 3 or 4 years ago. (lots of people don't believe that one)
I don't believe you're actually using AutoCAD either. What is this, 1994?
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