From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Analysis of roller forces, flange mechanics, and free-wheel action within a clutch system.
| Identifier | WestWitteringFiles\R\2October1927-November-1927\ 104 | |
| Date | 18th July 1927 guessed | |
| - 6 - more marked, proportionately, the greater the speed of revolution. It appears then that, if these are the only forces on the roller, the latter is subject to an unbalanced axial force in the direction Y to X, of amount L - L¹ cos α neglecting the forces T, T¹. The effect of this would be immediately to force all the rollers out of the X-end of the race, if they were not stopped by an obstacle. The obstacle in question is a flange G₂ G₂¹ (fig. 4) integral with the inner member; and the thrust of the rollers on this flange supplies the remainder of the axial force which the rollers have to transmit to the inner member. It will be observed that it is essential that this flange G₂ G₂¹ should be a part of the inner member. If it is attempted to retain the rollers by means of such a flange attached to the outer member, the thrust of the rollers on this flange will simply be subtracted from the friction thrust exerted by the outer member and the force tending to push home the clutch diminished accordingly. In fact this effect may be so marked as completely to neutralize the clutching action. A similar flange G₁G₁¹ is provided at the Y-end of the race and serves to retain the rollers in the "free-wheeling" action described below. 4. Free-wheel action. If the driven shaft (the inner member in fig. 4) is actually tending to rotate faster than the driving shaft, the relative rotation is in the sense opposite to the arrow in fig. 4, and the rollers will likewise revolve (and slip) in | ||