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

FREE WHEELS AND COASTER HUBS 115 and steel lining ; 84, brake actuator complete ; 85, roller guide ring ; 86, driving rollers (5) ; 87, sprocket ; 88, driving sleeve and ball ring complete; 89, dust cap; 90, sprocket locking ring ; 91, axle and fixed cone ; 92, curved washer ; 93, axle nut ; 94, spanner. For taking down the “ Torpedo ” hub the milled lock nut (76) on the brake-arm side must first be unscrewed by means of the notched spanner: the brake arm (78) must then be held firmly, and the squared end of the axle (91) unscrewed (from right to left) by means of special spanner (94). Assembling takes place in the reverse order, the brake cone (79) being placed in the hub shell on the ball-ring side, the brake cylinder (83) being intro- duced from the other end in such a way that the pro- jection on the cone (79) enters into the corresponding notch in the steel brake-cylinder lining. In the same way the brake actuator (84) is next inserted, and the driving sleeve (88) placed in position in the shell. In order to complete the assembling, the parts must now be screwed together by inserting the spindle and turn- ing it from left to right. The hub must run freely, but without side shake. In attaching the brake arm, the projecting part marked “OBEN” must always be fitted in the gap similarly marked in the brake cone so as to ensure proper lubrication. In adjusting all bearings, the step, axle nut, and lock nuts on both sides of the wheel must previously be loosened, and it will then be possible to adjust the hub as required by means of the spanner ; turning to the right tightens the bearings, Whilst turning to the left loosens them. The employ-