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20

It is talc, and it is used in the tube making process to prevent the inner tube rubber from sticking to itself.


7

Yes. Slime makes some valve extenders for Schrader valves , and if you have a Presta valve you can use a Presta to Schrader valve adapter (and if you really want, you can attach a Schrader valve extender to that, since you can buy the Schrader valve extenders at Walmart or whatever) . Some companies (like Topeak) make Presta valve extenders as well: ...


7

Can I calculate (approximately) how much air pressure is lost by measuring the hose length and diameter? No, you cannot tell how much pressure is lost based on the size of the hose. This is not because there is not enough information to tell but because the hose is irrelevant. You seem to be under the impression that there is some total amount of ...


6

Pro's: May be a quick roadside fix. May be able to fix without removing tyre. May last a long time. May offer protection against a second puncture in the same wheel. Con's: Expensive for a puncture. Bulky and heavy. Only one can per tyre. Wouldn't be suitable for some punctures and would be a waste if you didn't realise this. This fix may work for ...


6

It goes outside the rim, where you can see it. It's not even strictly necessary. It really only exists to keep the valve stem in place while you air the tire up, which makes the whole process much easier. Weight weenies throw them away to save a couple grams. Also note that if you use it, you don't want to screw it down too tight. Doing so can crimp your ...


6

Air will escape, one of the biggest problems with Ghetto tubeless (unfortunate, but long established name for this technique) and not using specific tubeless ready or UST (tubeless standard) tires is that you need to inflate your tires a lot. At worst for every ride. The tires often do roll off the rim. Not every combination of Ghetto tubeless will work ...


6

I do like you do when riding, and I usually save up my tubes with holes and patch a bunch of them all at once. That way I can use a tub of water to both find the holes, and can go back through them after patching and test to see if they are holding air. If I have any doubt after patching a tube, I give it a little time to cure and then I pump it up and hang ...


5

You could always buy some new tubes with the valve set at a 45 degree angle. Schwalbe sell them for £5/6 depending on the size you need. Easiest way I'd say and saves you faffing about drilling holes or screwing valve extenders on and off.


5

The manufacturer sells said "vulcanizing solution" in quantities of 25g tubes through 1 gallon cans, so you should be able to buy it in larger quantities. Indeed, a quick search of Amazon yield 8 oz cans (or slightly cheaper), and while I couldn't find it on something well known like Amazon there are other places that sell the 1 gallon quantity. However, as ...


5

Since the actual tire has burst, I think the most likely cause is that over the course of the 4000km you have ridden, the tire has suffered a cut or other damage that you did not previously notice. While sitting in your room, the pressure of the tube has gradually stretched the damaged area, and then burst. Inspect the other tire to check for cuts or ...


4

Those tires should work just fine. Any of the MTB slick tires listed on that site would work well with your bike and current rims. You can get too small a tire on too wide a rim, but it takes a much bigger jump than from 2" to 1.5 or so. There is a very conservative guide on Sheldon Brown's bike pages. http://sheldonbrown.com/tire-sizing.html Given your ...


4

Everything you could want to know about tire sizing is here, including recommendations of how wide a tire should go on how wide a rim. In your case, you will look for tires made for 26" rims (ISO 559), but generally, narrow rims should have narrower tires than wider rims. These tires will be marked 26 x decimal number (by decimal number, i mean a number ...


4

44c versus 45c is not enough to worry about. You can use it. Not that you would need to do this but after you have stretched it you should not try and put it in a 35c as it would be hard to do so without a fold in the tube.


3

Well, I hoped someone with more recent experience would chime in. It's been 20 years since I used tubulars, but here's what I remember. While the glue is important, the inflation of the tire will hold the tire to the rim. The glue is largely there to prevent the tire rolling when you're cornering hard and to keep the tire on the rim if you get a flat/slow ...


3

Slime is lighter and conveniently pre-applied in the convenience of you own own home/garage. Slime tube sealant As for can the tube be repaired? The PedalPower can says temporary but not exactly sure what that means. As for Sime if it seals a small puncture I just stay with Slime only. If it is a larger puncture it might be too big to repair period. I ...


3

Based on your edit, do this. Remove the wheel, deflate to about 10 PSI, then roll it along the ground, pressing down hard, for several revolutions. After you've done this examine the strip. Anywhere where the strip is not showing the "average" amount, tug on the tire to pull it out. Anywhere where the strip is showing too much, first examine the opposite ...


3

The visible strip sticking out from the top of the rim and inside the line is in fact the Chafer strip. This is on the tire to prevent the bead hook on the rim from cutting into the tire. The bead is the wire or in the case of folding tire such as the x'plor ush Kevlar ring on the edge of each tire. When seating the tire the bead is place inside the bead ...


3

Its extremely unlikely for an inner tube to just burst. It sounds like you are suffering from punctures. There are two types of puncture; the first is an object penetrating the tire and inner tube, and the second is a 'pinch' puncture where an impact causes the inner tube to be pinched between the tire and rim. Many bikes (even expensive ones) come with ...


3

Yes, absolutely. Spend an extra 20 dollars on good tires and you could save yourself 30 dollars worth of tubes. Plan on spending somewhere around 40 to 50 dollars a tire. Even if tubes were free, the money is worth saving the hours spent on the side of the road dealing with flats. Look for tires in the 'training' or 'commuting' category, for extra puncture ...


3

As I've said in other answers, the right tire pressure function of you and your bike and your terrain. You'll have to play with the tire pressure to balance the ride quality.Just because the tire says pressure x on the sidewall doesn't mean it makes any sense running the tire at that pressure since it might just give a bouncy ride which compromises your ...


3

Ideal Gas equation: pV=nRT With +15oC and -20oC the pressure ratio between the two is: p1/p2 = (273+15)/(273-20). Or 13% higher pressure when put in the garage. However that is assuming you are pumping it to maximum pressure, that the tyre can no longer (or very slightly) expand, making V (volume) constant. That is the basics for your assumption. ...


2

Had exactly the same problem in a 700 x 350 Duro tyre after repairing a puncture and could not understand why the back wheel wobbled so much. Adjusted the spokes for centering the wheel, checked that there was no tube twist, all to no avail. There was however on close inspection about a ten inch point where the Tyre looked as though it was "blown" out ...


2

I followed the advice of leaving the plastic film on. After a few days the tire went flat again. Inspection revealed that the tube was puckered around the patch because the plastic film does not stretch in the same way as the tube and the patch. The new leak was coming from under the patch. Therefore from now on I am going to try to take the plastic off.


2

Forget the slime, thornproof tubes, and tire liners. IMO, the best puncture protection for under $40 are Vittoria Randonneurs. I've had excellent luck with them. I had a pair of Gatorskins before the Randonneurs, and trust me, Kevlar belts do not work as well. Because the Kevlar is a woven material, very sharp objects can penetrate between the Kevlar ...


2

If you're that concerned with lost air and exact pressures, get Schrader valves on your bike and buy a shock pump like the Scott Shock Pump Pro 600, which lets you close the valve before disconnecting the hose. Other than that - if you're not far heavier than 100kg, it doesn't really matter whether you have six or eight or twelve bar in the tubes when it ...


2

Like many comments, it sounds like it's at least partially related to a change in tire pressure. There's also the external change in tire tread that could contribute to the sound change. If you listen to a large knob tire on a road versus a small knob one, they sound totally different. Your tread might be starting to wear, thus giving a different sound. The ...


2

The protective layer is known as "rim tape". The old tube shouldn't remain within the tire - the only thing inside the rim should be the rim tape and the new tube. You may have different tire pressures than before - have you tried playing with them?


2

How much air did you lose? What types of tires/tubes/rim strips? What tire pressure did you start your ride with? A few possibilities: 1) Did you replace the rim strip/tape in each rim when you replaced the tubes and tires? 2) You may have made a small hole in the tube when installing either by improperly using a tool to reseat the tire or by catching ...


2

You have the right idea. Inflate the tube to roughly the side it is in the tyre, which will be a much lower pressure than it would be if it was in a tyre. My floor pump doesn't register the pressure of a tube pumped up like this, so I expect it's less than 10psi/1 bar.


2

A propperly applied patch should resist inflating the tube up to 1.5-2 times the nominal diameter. This is useful for testing the quality of the patching work but also to find the tiniest holes that sometimes are harder to spot. As other say, the definitive way to test is to inflate and submerge in water or to inflate and let overnight to see if it holds. ...



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