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Old 09-17-12, 08:54 PM   #1
ModelTFan01
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Huffy MTB - Tube will not accept air! Needs Help!

I also posted this on BicycleTutor.com

Just to summarize, the tube will NOT allow any air to be put into it. It lets air OUT, but does NOT let air IN. You can read more below...

I still don't have my own air pump. To put air in my tires, I have to go to a friend's house and use her pump. She said I could use it anytime.

So, I went by her house today. Let all the air out of the tire, and reseated the tire a couple times because the bead never got straight (you could more of the bead in some spots than others and sometimes not at all.)

I wanted to avoid a blowout so I just let ALL the air out, de-seated the tire (like if I were going to replace the tube), inspected the inner tube (just for fun), put the inner tube back in, reseated the tire a few times. In between every re-seat I checked for any bulges/tube wanting to come out. I did this a few times until the tire actually wanted to set on there right.

So, I pumped it up. Got to about 5 pounds when tire pump doesn't pump any more air. I try pushing as hard as I can on the pump but it won't move. I didn't know what to think of it, so I just unplugged the pump and moved to the front tire (which also needed some air, but didn't need re-seating as it actually stays on right.) The front tire pumped up fine, but the rear only got to 5 pounds before it wouldn't move.

I checked "everything." I double-checked the tire to make sure no spots were bulging or there were no spots where the bead was seated improperly. Nothing. Everything came back okay.

I'm still scratching my head. I can let air out of the tire, but can't put air IN TO the tire. I really need help.

When I say "pump" above, it's a floor hand-pump.

The bike is a Huffy MTB. It has 26 inch tires. I read somewhere that the tube could be scrunched up in the tire, limiting air flow.

Before one of the re-seats I de-seated the whole tire and made sure the tube was on there right and no kinks.

HOWEVER, there is one last detail I should add. At the valve stem hole, I can't get the Valve Stem part of the tube to go in there right. It seems as if the tube is always wanting to go between the bead and the bottom of the rim and tries to push the bead up. What I mean is the valve stem gets stuck in an awkward position on the inside of the tire (although you could never tell that by just looking at the Valve Stem.) Could this cause this? Tomorrow (or when-ever I have the time) I'll deflate the tire and take photos.

I should also add that this bike was given to me for free, as the previous owners (my aunt and uncle) never rode the bikes but once or twice. My grandpa used his air compressor to pump it up (bad idea) and he popped the original Kenda tube (the front still has the original Kenda tube.) So we just went to Wal-Mart and bought that Hutchinson tube.

Anyways, the tires (not the tubes) are both original, factory-installed tires. They, of course, don't have a brand or manufacture date on them anywhere. The rear tire (the one with the Hutchinson tube that is giving me problems) is very loose and never wants to seat right. The rear tire (one giving me problems) is so loose I can actually stick my hand into the tire. To de-seat the tire, I don't even need a tire lever or to take the wheel off. I just simply use my hand as the tire lever that tire is so loose.

So IDK if I should spend the money buying a new tire or just keeping this tire. I'm 13 years old (in my last year of middle school), saving up for my first car (hopefully to be a Dodge Ram 1500), and really don't want to waste any money. My parents are probably going to be the ones who buy everything for the road bike tire/wheel project.

I'll admit it... bike tires and wheels HATE me!
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Old 09-18-12, 07:46 AM   #2
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can you put air in the tube when it's not on the wheel? Like just the tube and the pump? When you mount the tire, is there still a little air in the tube (enough to give it shape)?

Also, push the valve stem into the tire a little and you won't have issues with the bead seating properly.
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Old 09-18-12, 11:14 AM   #3
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I can't believe I read most of this thread. lol
Go buy a new tube. it's probably going to cost you four bucks.
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Old 09-18-12, 01:32 PM   #4
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.... saving up for my first car (hopefully to be a Dodge Ram 1500), and really don't want to waste any money....
My head just exploded.
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Old 09-18-12, 02:48 PM   #5
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You could easily double the value of that bike by putting a new tube on it.
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Old 09-18-12, 03:54 PM   #6
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My head just exploded.
Really. Of course I like the idea of having transportation that is green (bicycle), but I also like to get places quickly.

The tube does pump up when it's outside the tire. The tube is okay. It's the tire I have a problem with, as it's cheap and the bead keeps getting un-even.
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Old 09-18-12, 04:06 PM   #7
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It's the tire I have a problem with, as it's cheap and the bead keeps getting un-even.
Adjust it as you go....

Put the tire and tube on the wheel, put a couple pump strokes in and center the tire on the rim. Repeat the process until it looks and rolls round. If you just throw a tire and tube on a wheel and put 60psi in it, it probably won't seat right.
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Old 09-18-12, 04:48 PM   #8
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Probably have a bad rim, might check out a Rhinolite.
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Old 09-18-12, 08:57 PM   #9
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Huffy MTB - Tube will not accept air! Needs Help!

Is enough of the valve stem protruding from the rim? Is your pump head getting a good bite on the valve? Sometimes I have to push against the tire to force the stem out far enough to get good attachment with the pump head.
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Old 09-18-12, 09:39 PM   #10
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I'll hopefully have photos of it tomorrow afternoon. I'll take some with the 5 lbs in it, deflated, and some with the tube pulled out.
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Old 09-19-12, 03:26 AM   #11
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First of all you have to check tube quality, its jointing points and highest pressure level.
These will help to make decision and choosing right tube for cycle tire.
Company name also have direct effect on any product so also keep it in mind. Always use normal air pressure which good for tube and for tire
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Old 09-19-12, 06:02 AM   #12
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Originally Posted by ModelTFan01 View Post
The tube does pump up when it's outside the tire. The tube is okay.
I agree. So the tube is ok. My feeling is that you're not getting the pump adequately attached to the tube. Sometimes when you press down to attach the pump head, the valve stem gets pushed back into the rim. If that's happening, then squeeze the tire opposite with your hand to force the stem back out while you attach the pump. A pump having a screw on head can be helpful here as well.

Or just buy a new tube having a longer stem. I bet though, that you can get the current tube to work.

Also, I understand what you said about the bead not seating evenly. A couple things can help here. One is to wet the outside of the tire before mounting it. Some people use soapy water. I've had good luck also just spraying on some alcohol that I keep handy in a spray bottle for cleaning purposes. Just get the bead wet so it will slide better. Then over-inflate the tire. Usually I inflate tires like yours to 60psi. You'll hopefully hear the bead snapping into place as you go. When done, let out a bunch of the air and reinflate to your desired pressure.

For me the sequence is often like: 1) Wet the bead, 2) Inflate to 60psi, 3) Verify even seating of the bead, 4) Release pressure until tire is squeezably soft, 5) Reattach pump and inflate to 30psi.

Good luck! Keep at it. Be patient. Pay attention to detail. Post back with your progress.
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Old 09-19-12, 03:25 PM   #13
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Tube is a Hutchinson Inner Tube

Is Hutchinson a good brand or some garbage name?
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Old 09-19-12, 03:57 PM   #14
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Hutchinson is a good brand.

http://www.hutchinsonworldwide.com/home-958.html
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Old 09-19-12, 09:46 PM   #15
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So, Hutchinson is a good brand?

I don't like the idea of the water and over-inflating. I'm scared to pump the tire up to the maximum pressure or near it (maximum pressure is 50 PSI, I usually leave the tire at 20-30 PSI) because the rim, let alone of over-inflating it.

I just don't like it when they blow up. What about wetting it then pumping it up to about 30 or 40 PSI?
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Old 09-20-12, 05:09 AM   #16
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What about wetting it then pumping it up to about 30 or 40 PSI?
Sure. Try it. No harm in trying.

Are you able to attach the pump correctly now?

Do you have a friend/neighbor/relative who is comfortable with bikes?

This video might help:

http://www.youtube.com/watch?v=_4_M0dIKGeQ

Notice at the 7-second mark, and again at the 47-second mark, how he pushes against the tire to press the valve stem out while he attaches the pump head. From what you've said so far, I believe you are not getting air into the tube because you are not getting the pump attached properly. Watch the video, especially at those two spots I mentioned.
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Old 09-21-12, 01:32 AM   #17
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When putting the tube into the tire, are you setting the tire's bead at the valve stem first? If you don't, and do it last, the tube might be getting pinched off there. I always start there and once the tube is in, push the bead away from the rim to see if any of the tube is underneath it. You should not see any tube as it should be happily inside the bead's edge.
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Old 09-21-12, 06:51 AM   #18
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You need to put little air in the tube before you put it in the tire.
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Old 09-23-12, 04:08 AM   #19
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Epic troll thread!! 10/10!!!
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