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

BUILDING A CYCLE 97 or seat tube are quite true with each other by sighting the edges of the two tubes from the front. Before finally fixing the top tube into the seat lug, put a small charge of brazing spelter and borax into the top tube ; about half a thimble- ful will be sufficient. A small air-hole will also be required in this tube, either drilled on the under-side of the tube, or through the top of the seat tube into the top tube. Air-holes.— When a tube is being brazed that has both ends ' blocked up, so that there is no air outlet, a small air- hole is necessary to pre- vent a burst tube or the joint blowing. A very small hole, about gV in., is all that is necessary, and drilled in an out-of- sight position. The seat lug should not be sawn right through until after it is brazed, or it will open when hot and make a bad joint. Fitting up a Back Part.—Cut the back forks off to length, and be sure to have both equal. The best way to measure these is to cut a piece of wire long enough to