Cycle Repairing and Adjusting
With a Chapter on building a Bicycle from a Set of Parts

TYRE TUBE REPAIRING 6i with the vulcanising solution, and press together without wasting a second. Success by this method is not promised, but the experiment is worth trying. Porous Tubes.—A common method of improving a porous tube is to pour into it, through the valve hole, a quantity of rubber solution made sufficiently thin by mixing with benzene. Turn the tyre about so that the solution runs all over the inside, and continue the twisting and turning until the solution begins to set, then leave the valve open for a day or so. It will be necessary to half inflate the tube immediately after introducing the thin solution. The method is likely to prove a messy business. It has been said that the introduction of french chalk into the tyre (using a small funnel) not only stops up the pores, but preserves the inside of the tube. Keep Tyres in the Shade.—When making a halt on the road, see that the tyres are protected from the sun, by standing the machine in the shade as much as possible. For if the stay is a lengthy one, some of the patches on the inner tube may lift slightly, and prove very difficult to repair, as the escape is so slight that it often can be de- lected only by stretching under water. Vulcanised patches Would be free from this risk.