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

CHAPTER IX Miscellaneous Repairs and Operations Fitting Seat Lug to Cycle.—For removing an old seat lug on gent’s cycle, and fitting a new one in its place, first strip the frame of all fittings and scrape or file the enamel off the sides of the seat lug and top head lug ; find the brazing pegs or screws, centre-punch them and drill out. The top head lug should now be heated on the brazing hearth and sprung off the head tube with the top tube. This requires care to heat in the proper place and in the springing off, or the head lug or tube may be damaged. When this is free of the head tube, proceed to heat the seat lug and draw this off when sufficiently hot, that is when the brass is flowing. Great care is necessary not to damage the tubes by bending or splitting the thin ends of the lugs. The best way is to procure assistance for this operation so that both hands may be free to work the lugs off' while the blowpipe is at work. Clean up the ends of the head and seat tubes, fit the new seat lug to the top tube, and then replace on the head and seat tubes, peg when in position, and proceed* to re-braze. The new seat lug should be sawn nearly through at the back before fitting on, as it will be difficult to saw after brazing if of malleable iron. 142