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

MISCELLANEOUS REPAIRS 145 the blades must be pulled over sidewise until true. To do this, the wheel will have to be removed or the spindle nuts slackened. Only that part of the tube or blade which is bent should be heated when setting. If too much has been heated, cool the straight part with water before pulling true, or a double bend will result, which will be very awkward to remove. To prevent the vice jaws damaging the tube, it is advisable to hold the fork in a pair of wood vice blocks. Shortening Cycle Head.—Assume that it is wished to shorten the head of a cycle frame by in., without purchasing a new head and seat lugs. If the seat tube is shortened a similar amount to the head tube, the same lugs will do if they are taken off without damage ; but if the seat tube is to remain as it is, then new lugs will be necessary to suit the different angle. If the seat tube is to be shortened, first cut off the head and seat tubes the required length. Then clean off the enamel from the side of the lugs to find any pegs or screws, which must be drilled out. The short pieces of tube can then be removed by heating up the lugs on a brazing hearth and twisting out the short ends with a pair of pliers when the brass is well melted. If the seat tube is to remain as it is, cut off the head tube the required length, drill out the peg in the seat lug, unbraze this, and then unbraze the short piece from the head lug. Truing Bracket Spindles.—Hub and bottom-bracket spindles generally have centres drilled in the ends, unless made from the bar. If centres are present, mount the spindle between lathe centres and spin, when the out-of- K