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A rubber torus shaped balloon which is inflated via a valve inside a tyre to keep it rigid.

13 votes
Accepted

Is there a recycling program that accepts unrepairable inner tubes?

http://alchemygoods.com/ They recycle inner tubes into usable products, and will give you credit towards their products for recycling.
zenbike's user avatar
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14 votes

What happened? tube blew the rim?

This kind of failure is typically caused by excessive wear on the brake surface of the rim. Every time you apply your brakes, you are polishing small amounts of metal away from the rim. Eventually, …
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  • 30.1k
5 votes

Can I use an inner tube that's too narrow for the tyre?

Yes, you can, as long as you don't go more than one size smaller, or the differential is not too extreme. A 1.25 in a 1.5 is fine. A 1.25 in a 2.25 is likely to have issues with flats. Your LBS will …
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16 votes
Accepted

What does A/V mean on an inner tube package?

Schrader valve/Schrader tube aka "American valve" or "Automotive valve" The Schrader valve consists of a valve stem into which a valve core is threaded, and is used on virtually all automobile tires …
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7 votes
Accepted

unblock slime presta valve

Use a valve core tool to remove the core of the valve, and then clean it using a light solvent. It should be only a few minutes work. If there is a lump in the flat tire, the slime may have harden …
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6 votes

Putting a Presta stem nut inside the rim?

No, there is no reason for that type of installation unless the whole in the rim is sized for a Schrader valve, rather than a presta valve. It is, as you found, unlikely to cause an issue though.
zenbike's user avatar
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17 votes
Accepted

Should inner tube have excess length?

A tube should not have excess length, and doubling on itself will cause the tire to feel uneven while riding, as well as increase the likelihood of flats. Assuming the tube is the correct size for th …
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4 votes

If I can't find the hole causing a flat tire, do I need to replace the tube?

To answer the question directly, yes, if your tube is losing air that quickly, it needs repair. It is not a matter of simply being too old. There is likely a very small hole or a leak in the valve. …
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5 votes

Can I use a shock pump to inflate a tube?

A shock pump is designed to fill a very small volume of space with very high air pressures. A tire pump is designed to fill a large volume of air, to relatively low pressures, pretty quickly. You ca …
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15 votes

Heavy Rider (300lb+) - Please recommend a 26" tyre to avoid tyre pinch

As a heavy rider personally, I don't have many issues with flats. A normal tire on the high/maximum pressure works fine to avoid pinch flats. The key is to check tire pressure every time you get o …
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18 votes

When should you replace tires after getting a flat?

Generally, if you are using an inner tube in the tire, you should replace the tire if there is more than a 2 millimeter cut in the tire casing. Not in the rubber, mind, but it the threaded cloth casin …
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