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noob cant figure out how to use a pump

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noob cant figure out how to use a pump

Old 08-01-09, 06:34 AM
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noob cant figure out how to use a pump

Hi Please laugh now so you can get it out of your system. OK better now? I have a blackburn air tower 2 floor pump. the head has two holes in it one for presta and one for schrader. now when I try to use the presta hole air is still pouring out the schrader hole and I can't get any air to my tire. I just bought the pump and would like to know if I am just an idiot or should I take it back to the dealer?
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Old 08-01-09, 06:48 AM
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ah.... sure.
 
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Lever other direction? My topeak pump has a lever that goes both directions... one for shrader and one for presta. If I flip it the wrong way it does not work...

Yours has a dual head?
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Old 08-01-09, 06:52 AM
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Unlock the valve!

No worries. You have to learn somewhere. Just thank your lucky stars that I'm not out riding (yet) like the hyper-critical BFers who will probably give you a good ribbing for this.

Presta valves have a lock nut on them. When you remove the valve cap, look for a little knurled nut about 1/8" from the tip of the valve stem. This needs to be turned until it is even with the tip of the stem. You should then be able to depress the stem and hear some air hiss out. Now push your pump on as far as it'll go, lock it, and pump away. Just make sure you re-lock the valve stem when you're done.

Good luck and good riding.

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Old 08-01-09, 06:58 AM
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funny cause i had no idea how to use a presta valve until i watched a vid on Youtube... i tried pumping in air into the valve and didn't realize it wasn't even open to accept air... DUH...
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Old 08-01-09, 07:00 AM
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Originally Posted by kyakdiver
Lever other direction? My topeak pump has a lever that goes both directions... one for shrader and one for presta. If I flip it the wrong way it does not work...

Yours has a dual head?
Yeah its a dual head but the lever only works in one direction. I think it might be me just learning how to use it IDK. I had a flat so I changed the tube the I couldn't get it to pump up with the floor pump not the first time I've had this problem. I used my frame pump to get it up to about 70psi then was able to use the floor pump to fill it the rest of the way. Maybe I'm putting the head on too far or not far enough?
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Old 08-01-09, 07:08 AM
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ah.... sure.
 
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Like mentioned above.... Breaking the seal is needed before putting the pump head on the valve. Even with that somethings it takes a good hard effort to break the seal with the pump head on.
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Old 08-01-09, 07:37 AM
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Originally Posted by Joseph Vigue
Yeah its a dual head but the lever only works in one direction. I think it might be me just learning how to use it IDK. I had a flat so I changed the tube the I couldn't get it to pump up with the floor pump not the first time I've had this problem. I used my frame pump to get it up to about 70psi then was able to use the floor pump to fill it the rest of the way. Maybe I'm putting the head on too far or not far enough?
I think I know what's happening (yeahright.. lol) --

It sounds like there's a valve inside the chuck that automatically switches from Presta to Schrader. It operates on pressure resistance -- that is, when you pump, it'll switch to route air out the hole that's building up a bit of pressure. For whatever reason, though, it's sticking, and needs a lot more pressure than usual to flip. That's why it'll work when there's already air in the tire but it won't work on a dead flat.

You should be able to get it to switch by attaching it to the tire and shoving the pump handle down very quickly, almost like you're blowing the switch open. If that doesn't work, try holding the chuck in your hand, cover the Presta hole with your thumb (yes, the Presta one, leaving the Schrader hole open), and give the pump a quick burst.

That's how I got my dual-head pump unstuck, anyway (I think mine was a Blackburn, too). See if it works for yours.
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Old 08-01-09, 10:48 AM
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I have the same pump and as far as I can tell, the chuck is just kinda crappy. you need to press it on firmly and square it up before you lock it on. then make sure it does not get tugged around when you are pumping. I support the hose with one foot and use the other foot to hold the pump.
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Old 08-01-09, 11:07 AM
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Same pump, same problem here too. I actually just got a converter head for the Schrader side which does work since I thought the presta side was busted. Still doesn't create a perfect air-tight seal but it does the job. Overall just a crappy pump i think.
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Old 08-01-09, 11:55 AM
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same problem here, I usually have to put it on 2-3 x before I get a good seal.
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Old 08-01-09, 08:57 PM
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Same pump, and I had the same problem when I first got it. I found it generally helped to push the Presta valve in way more than I'd expect to need to, that did the trick for me and now I don't have any problems using it.
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Old 08-01-09, 09:02 PM
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Might want to cure the problem with a topeak pump.
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Old 08-01-09, 09:11 PM
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Yeah, I'll say I wouldn't recommend anyone else buying it, but since he owns the Blackburn already it can be a serviceable pump if you fiddle around with it a bit.

Alternately, since it's the head that's the problem, just cut the old one off and clamp on a good Presta head. That's what I considered in a moment of frustration before I got mine to work.
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Old 08-01-09, 09:14 PM
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It could be messed up. My ol' pump is begging to be retired. It doesn't work very well anymore - has the problem like yours. Air comes out of the other hole when it shouldn't.
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Old 08-01-09, 09:28 PM
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I also had the same problem with that pump so I gave it away free. It was my second pump (when I kept one at home and in my office) but now that my office is in my home I stick with my reliable Specialized Air Tool.
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Old 08-01-09, 09:36 PM
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Originally Posted by kyakdiver
Might want to cure the problem with a topeak pump.
No kidding. These things sound like quite the pump.

My Topeak Joe Blow (Sport?), the cheapest model, yellow one, works beautifully. It gets chosen to go to racers over the Blackburns and Park Tools of my teammates, and it was like $20.
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Old 08-02-09, 04:29 AM
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Blackburn pumps suck. Mine broke in a week of using it.

Topeak Joe Blow Sport ftw.
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