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

i4 CYCLE REPAIRING Fitting a New Rim.—To fit a new rim to replace one broken or so badly dented or knocked about that it would not pay to try and get it true, all the nipples must be unscrewed. A quick way of doing this, if the nipples are slotted on the heads, is with a small brace with a screw- driver bit fixed therein. The nipples can be run off the spokes very quickly by this method. Before beginning to take the wheel to pieces, however, carefully note how the spokes are crossed ; that is to say, how many holes apart in the rim each pair of spokes from the flange are. A sketch of the one side may be made, and the spokes and spoke holes numbered to facilitate putting together. It is pre- sumed that the new rim has been purchased ready drilled ; this is the best way, as only a few pence extra is charged for drilling. In putting the wheel together, first bring a pair of spokes up from the flange to the rim the correct number of holes apart, run the nipples on lightly with the fingers, and then find the pair of spokes most directly opposite on the same flange, and bring these up to their proper holes in the rim. This can be ascertained by counting the number of holes in the hub flange between the first pair of spokes and the second on each side, and then counting the holes in the rim. The spoke holes in the rim are not drilled straight, but on the slant ; that is, half the holes are drilled to the left and half to the right, looking at the rim from the top. The reason for this is that the nipple and spoke will lie in a straight line from the hole in the hub flange to the hole in the rim when tightened up. It will, therefore, be neces- sary to look carefully at the rim before putting the first