Tire Repair

By: Pedal Your World  09-12-2011

A flat tire will put an end to otherwise enjoyable rides really quickly. Pedal Your World offers full tire repair services which include not only replacing the inner tube but checking the tire itself, replacing it if necessary, and checking the rim, rimstrip and spokes to make sure there are no burrs or damage which would result in recurring flats. Pedal Your World also sells inner tubes, new tires and tire upgrades, tire patch kits, and anything else you need to keep on rolling!

We would like to offer the following advice on fixing tires.


Patching The Bicycle Tube

1. Find the hole or hole on your deflated inner tube and make sure the outside of the tube is dry.2. Using sandpaper, or the metal scraper that comes with some patch kits, buff the tube around the area of the hole to remove the outer surface of the rubber revealing fresh rubber underneath. Make sure to buff at least as large an area as the whole patch will cover. If you use a metal scraper, be careful not to cut deep enough to create new holes.3. Put glue over the buffed area. Work only in a well-ventilated area.4. Let the glue dry fully. Really! This kind of glue, also called contact cement, must dry completely before applying the patch. Many people are confused about this and do strange things including setting the glue on fire!5. Peel the foil or the plastic backing off the patch and press it firmly on the glued area. Do not touch the side of the patch which sticks to the glue because even the microscopic amount of material on your fingers deactivates its stickiness.Installing The Bicycles Tire And Tube1. Check the rimstrip, the rubber, cloth or plastic covering over the spoke nipples to be sure it is in good condition and in proper position.2. Look at the outside of the tire while feeling around the inside (carefully) to see whether the puncturing object is still stuck in the rubber.If the tire has a large hole, you may be able to shore it up temporarily. Just lay a square of cloth between the tire and the tube. The air pressure will hold it in place.3. Pump just enough air into the tube for it to take its doughnut-like shape.4. Put the inner tube fully into the tire.5. Push the valve about half way into the valve hole on the rim. If you have trouble getting it in, lift up the rimstrip first, push the valve through the rimstrip, then into the rim.6. Lay the wheel on a table and then slip the bottom side of the tire into position onto the rim.The last little bit may be difficult to slip over the edge of the rim. Resist the temptation to use a tire lever to pry it on.This may damage the tire edge, or you may slip and put a hole in the tube. It is almost always possible to get the tire on entirely by hand if you force just an inch or two at a time over the rim using your thumbs. Practice helps more than strength. Except with a few thin tires, almost no strength is needed.7. Now put the top side of the tire on the same way. If you have trouble, make sure there is not too much air in the inner tube. Also check to see that the tire goes on properly. Sometimes the tire won't drop fully into position on the rim, often near the valve. This is why you put the valve half-way into its hole at first, to help prevent the tube getting caught between the tire and the rim edge.8. When the tire is installed, gently pull and wiggle the valve stem into position.9. Put just a little air into the bicycle's tire, about ten pounds per square inch. Look at the tire, all the way around and on both sides, to be sure it is seated properly. If there is a section of tire that is trying to bulge off the rim, let the air out and fix this area by pushing it into position. After you are satisfied with the tire installation, inflate the tire to full pressure. Do this slowly, periodically checking that the seating is still OK. The proper pressure is written (vulcanized) on the tire side.Another seating problem is the opposite of bulging. The tire will not seem to fill up entirely in one area, giving you a wheel with a sort of flat spot. Sometimes this can be cured by letting the air out, manipulating the tire by hand into place, and then re-inflating. Sometimes you have to do more. One approach is to coat the edges of the rim with soapy water to lubricate the tire and rim, allowing the tire to slip into position as you inflate it. Use a kind of soap that dries up. Some mechanics just exceed the recommended pressure for a short while until the tire pops into position, but this is dangerous. In some cases, a new tire is necessary.Note: Bicycle repair people are not all agreed on this procedure. Some use other techniques. If someone shows you another approach, it may be just as valid as long as it works. Choose the one you like best.


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