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).
Typed memo discussing engineering updates and issues for various vehicle components.
| Identifier | WestWitteringFiles\H\November1921\ Scan76 | |
| Date | 25th November 1921 | |
| To HS.{Lord Ernest Hives - Chair} & HY.{Tom Haldenby - Plant Engineer} from R.{Sir Henry Royce} -6- R10/G25/11/21 Contd. (1) Head lamp. (2) Side Lamps. (3) Separate fuses for the dynamo field and armature. (4) Coil ignition circuit. (5) Body klaxon, gauge lamp and connection socket. There will be fewer wires to the switch box, but more to the distributing board (this is preferable) Diagram shewn explains this is a new arrangement, and the distributing board requires rearranging. The buzzer etc. is better than a fuse because it does not entirely break the circuit, it being very undesirable to do so with inherently (third brush) controlled dynamo. With a vibrator regulator on the dynamo the arrangement is much more flexible and can be the simpler scheme previously suggested, but at the moment we have not a good regulator available (21) 1 BA. NUTS. Mr. Haldenby reports that there is some confusion in the Works in using 1 BA and 1/4 26s since these two sizes are very much alike in the models. He also said that the hexagon provided on the 1 BA is larger than that on the 1/4 nut. Get the hexagons right. (22) WATER PUMP DRIVE. There is a bad oil leak from the water pump drive on the experimental chassis, but Mr. Hives thinks that the oil drain-age holes are not as large as those we have finally instructed from the drive chamber. He will look into this. (23) SHOCK DAMPERS. With regard to the shock dampers, we have decided to put up the size of the ball joints for the connecting links, and to make these larger ball joints of the type at present used on the 40/50 H.P. endeavouring to lubricate the mechanism from one point, as I suggested for the 40/50 H.P. rear shock damper. Further, owing to the semi-circular "U" bolts on the rear axle not being ideal for jacking up the rear axle, I propose that we use flat "U" bolts with radii in the corners of moderate dimensions, and a drop forged clamping plate under the rear spring hollow on the inside, which shall have a boss at its for-ward end with a tapered hole for carrying the shock damper ball, and be formed with a pad underneath for the jack. Mr. Day's department will deal with this. (Completed) (24) CRANKCASE OIL LEAK AT REAR BEARING. Mr. Hives reports that he has now no trouble with this. (25) BENDIX PINION. (our drg. was not intended as a design) Mr. Hives reports that the screws securing the ends of the spring work out and touch on the surrounding casing. I want Mr. Hives to hunt up the particulars of the spring, and we will work out some improved method here of securing the ends. R R 5327 (200 J.{Mr Johnson W.M.}) (E P D' 408' 30-4-21') B W Street[?] | ||