Solid inner tube 26 inch

Solid inner tube 26 inch DEFAULT

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Puncture proof inner tubes

Stopaflat tubes are "Size Specific" to a tyre and care should always be taken when matching the tube to the tyre. Please note that our 1.75 sizes will fit a 1.90 standard tyre. Tyre width markings are clearly embossed on the outside wall of a tyre. However there can be variations between tyre manufacturers and tread designs.

Occasionally it may be necessary to fit a larger or smaller
tube than indicated by the tyre size to correct this. A simple test is to insert the tube into the tyre, pinch the beads together and measure from bead to bead. This should be around 20mm of the internal width of the rim.

If in doubt please consult your local dealer who will be happy to advise on sizing and fitting.



Our Stopaflat XT range is extra tough and made from a different formula, ideally suited for hire bikes and bike share schemes. Our Stopaflat XT tubes are red in colour, so as to distinguish the tube from our regular Stopaflat tubes, which are yellow. The XT range is also suitable for use in E-Bikes.

AVAILABLE SIZES


12 1/2 x 1 75 x 2 1/4 (47-203)
12 1/2 x 2 1/4(62-203)
16 x 1 75R (47-305)
16 x 2 125 (57-305)
20 x 1 75 (47-406)
20 x 2 125 (57-406)
24 x 1 75N (47-507)
26 x 1 95 (50-559)
26 x 2.125 (57-559)
27.5 x 2.1 (56-584)


14 x 2.40 (64-254)
16 x 2.40 (64-305)


24 X 1.25 Stopaflat XT (32-507)
26 x 1.95 Stopaflat XT (50-559)
700 x 35c Stopaflat XT (37-622)
700 x 38c Stopaflat XT (40-622)
sizes
Please contact us if you have a specific application you think we may be able to assist you with.

Fill in the form below and we’ll get back to you.


Hong Kong
Room 1004 Wang Yip Industrial Building,
1 Elm Street, Tai Kok Tsui, Kowloon
T: +852 2381 2303 F: +852 2397 7148
E: [email protected]


South Africa
1 Alma Street, Newton Park,
Port Elizabeth, 6045
T: +27 (0) 41 364 0110 F: +27 (0) 41 365 3338
C: +27 (0) 82 555 6897 E: [email protected]


United Kingdom
5/140 Warrick Way, London SW1V 4JD
T: + 44 (0) 207 828 2403 F: + 44 (0) 207 828 2662
C: + 44 (0) 79 4630 4801 E: [email protected]

Sours: https://www.stopaflat.co/sizes.html

It’s one of those bits of cycling equipment that looks simple and standardised. But there are a myriad of complications. Cycling Weekly guides you through the intricacies of bike inner tubes.

Inner tube sizes explained

First up is the tube’s diameter. Most road bikes will have 700c wheels and need 700c tubes to fit.

But there are other sizes in use: many gravel bikes like the Pinarello Grevilcome with 650b wheels. It’s also the size used on smaller sizes of Canyon’s women’s range. You’ll need 650b tubes to fit these bikes.

And some city and hybrid bikes use 26 inch wheels, usually with wider tyres, and need different size tubes, while folding bikes and kids’ bikes will often have different sized wheels again.

(Image credit: mike prior)

Next is the tube’s width. Many 700c tubes come to fit tyres up to 25mm, which are often fitted to road bikes. But you can also find wider tubes to fit the 28mm tyres that are increasingly fitted to road bikes. Cyclocross and gravel bikes and many city and hybrid bikes with 700c wheels will have even wider tyres and will need a wider tube still, although most gravel bike riders will choose to run their tyres tubeless.

Bike inner tubes for narrower tyres will usually fit these wider tyres; they will just be a bit more stretched out to fill the space. They're unlikely to burst, but if you get a flat they may go down more quickly. On the other hand, a wider inner tube may be awkward to get into a 25mm tyre.

Mountain bike tyre sizes are usually stated in inches. So a 29 inch MTB tube will have the same diameter as a 700c road wheel, while a 27.5 inch tube will be the same diameter as a 650b road wheel. You can also get 26 inch MTB tubes. But since MTB tyres are typically wider than road tyres, they may be too wide to fit, even in a gravel bike tyre.

>>> How to fix a puncture and mend an inner tube

Inner tube valve types: Presta or Schrader?

Most bikes come with wheels that use presta valved tubes. These valves are quite narrow and have a screw at their valve tip. You need to unscrew it to get air into the tyre. Although the tyre will stay inflated with the screw loose, it’s a good idea to close it up so that you don’t accidentally let air out of your tyre. And a valve cap will stop muck getting into it when riding.

Some presta valves come in one piece, while others have cores that unscrew from the valve body. You can often unscrew them by hand or by wrapping them in a piece of old cloth or rubber and delicately using a pair of pliers. There are also core removal tools available.

A removable core can be replaced if it gets damaged – the screw part is prone to getting bent. The disadvantage is that you can unscrew the core by accident when removing a screw-on pump, undoing all your hard work pumping the tyre up.

Schrader valve inner tube

Some bike inner tubes have Schrader valves like those used on car tyres. These won’t fit into a wheel drilled for a presta valve. Likewise, if your wheel has a valve hole the right diameter for a Schrader valve, a presta valve will not fit securely and there’s a risk the tube will get pinched in the valve hole and blow out.

Woods valve inner tube

More of a rarity is the Woods valve. This looks like a presta valve, but has a collar holding the valve core in place. Not all modern pumps will fit onto a Woods valve because of the collar.

Valve length and valve extenders

Finally, keep an eye on the valve length. If you’ve got deep section wheels, you’ll need bike inner tubes with longer valves to make sure that they protrude through the rim. Some valves can be as long as 8cm. And you don’t want to get a flat out riding and find that your spare tube’s valve isn’t long enough to attach a pump – believe us, we’ve been there.

If your valve is still not long enough for your deep section wheels, you can buy valve extenders. These screw onto the valve and can add enough extra length to fit the deepest aero wheels.

Buy now: Halo valve extender from Tredz for £5.99

Inner tube material

The majority of inner tubes will be made of butyl rubber. It’s the least expensive material and also the most robust. A butyl tube will be black and is repairable with a standard puncture kit if you get a flat.

Inner tube manufacturers often also have lighter weight butyl tubes in their line-ups. These are just made of thinner rubber. The weight saving comes at the expense of a bit more fragility though, so you need to be more careful not to pinch a lightweight tube when fitting it. They are also likely to be more prone to punctures.

Finally, there are latex tubes. These are the lightest option and also roll faster than butyl. But they are even more fragile than lightweight butyl tubes and harder to fit. And they leak air more quickly than a butyl tube, so you need to reinflate them before each ride. They can’t usually be repaired if they do get a flat either.

Also be careful using latex tubes in rim braked carbon clincher wheels. Because carbon rims don’t transmit heat as quickly as alloy ones, prolonged braking on descents can lead to hot spots on the rim, which in turn can damage the tube leading to failure.

If you don’t drag your brakes on a descent this is unlikely to be a problem, but if you’re an inexperienced descender it’s something to be aware of.

Tubeless tyres

They’ve been around for a while for mountain bikes and there are an increasing number of tubeless tyres available on road bikes. To run tubeless, you need a tubeless ready wheel and tyre. More new road bikes are coming equipped with tubeless-ready wheels and most aftermarket wheelsets you can buy are tubeless compatible too. Don’t try to set up tubeless if you don’t have both of these, as you risk the tyre blowing out when riding.

>>> Best tubeless sealant

Buy now: Tubeless road and gravel tyres from Wiggle from £24.99

Tubeless tyres use a separate presta valve that screws into the rim and has a rubber end to make a seal. Having put the valve in the rim, you mount the tubeless tyre. This has a tighter bead than a normal tyre, so it can be hard work to get it onto the rim.

>>> Best road bike tyres

(Image credit: mike prior)

Getting an airtight seal to the rim can also be tricky. You need to add sealant to the tyre. This helps with getting the tyre airtight and usually deals with small punctures when out riding.

Buy now: Muc-Off tubeless valve kit from Tredz from £24.99

But it may not seal a larger hole successfully, so it’s a good idea to still carry a spare tube, tyre levers and a pump just in case of a major leak.

Sealant tends to dry out over time, so you may need to top up. This is where the removable valve core comes in. Most sealants come with a nozzle to let you squirt sealant through the valve once the core has been removed. Milkit also sells an inner valve kit which lets you check you sealant level and top it up through the valve.

(Image credit: Tannus Tires)

There's also the option of solid rubber tyres, which will rid you of inner tube problems for ever, although at the expense of ride quality.

Puncture proofing bike inner tubes

If your tube has a removable core, you can get additional puncture protection by adding sealant to it. You take out the core, add around 25 to 30ml of sealant and refit the core. Again, this may not deal with the largest holes, but may help keep you going. But if you do flat, the sealant may stop a patch from adhering to the tube, so it's a good idea to carry a spare to get you home.

>>> Best puncture proof tyres

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(Image credit: chris catchpole)

Watch out if you have latex tubes though, as some sealants can degrade the latex over time, causing it to fail. This can also be a problem with tubular tyres, where the tube sewn into the tyre is often thin and made of latex.

Finally, you can buy bike inner tubes already filled with sealant, for an easy way to get some additional puncture protection.

Sours: https://www.cyclingweekly.com/group-tests/everything-you-need-to-know-about-cycle-inner-tubes-330000
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Whatever happened to solid bike tubes?

To answer the actual question, they are no longer sold in the US. In most locations, they aren't legal to sell. A bicycle tire uses the pressure from the inflation of the tube, (or in the case of tubeless tires, the tire itself is inflated), against the casing of the tire to lock the bead of the tire into the rim.

Without that pressure lock, the tires roll off the rim.

Since a solid tube or solid manufactured tire can't by definition inflate against the bead, they were both abnormally hard to install, and prone to rolling off the wheel in use. So they were considered unsafe, and are no longer sold anywhere that I am aware of.

Certainly, no reputable shop will sell them.

answered Jun 20 '11 at 13:11

zenbikezenbike

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Sours: https://bicycles.stackexchange.com/questions/3890/whatever-happened-to-solid-bike-tubes
Changing a bicycle tire tube - 26 inch bike

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