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).
Modifications and performance of radiator mountings, brakes, axles, and steering systems.
| Identifier | WestWitteringFiles\W\May1931-August1931\ Scan097 | |
| Date | 20th April 1931 guessed | |
| -6- by altering the radiator mounting using a rubber block for controlling the radiator sideways, and a spring for controlling the radiator endways, i.e. allowing the frame to distort without moving the radiator, we considerably reduced the tendency for the bonnet to 'knock' (scheme now issued), without introducing the more expensive vee stay. We also found that a clearance at the rear end of the bonnet must not be less than .187". The front end of the bonnet was maintained an approximate close fit to the radiator. REAR & FRONT BRAKES, to LOP.G.78278 and LOP.G.78490. Incorporating G.L.479 Lubrication Scheme. Anti-Squeak Type Brake Shoes G.79217-8 lined with Ferodo Bonded Asbestos. The rear and front brakes have been efficient. The front have remained silent. The rear started to groan slightly at approx. 9,500 miles. We fitted new pressure springs under the pilot shoes, the springs taken out having taken up a permanent set. The brakes have since remained quiet. FRONT AXLE to LOP.G.78450. Modified Feed Tube in Axle Pivot Pins to G.L.431. The lubrication of the pivot pins and brake actuating shafts appears to be satisfactory. We have not dismantled the parts. REAR AXLE to LOP.G.78285. Axle No.EXP.9 - 161 - 11 X 41 Ratio. Existing axle modified, incorporating G.L.479 - Lubrication of Rear Brake Actuating Shafts. Breather to Ex.5988 fitted to Axle Casing. We have had a slight leak of oil from the drain tube at the O.S. When the hub was dismantled there was no sign of oil having got on to the brakes. There is a slight period from 50 to 40 MPH on the overrun. This would not be complained of. The new scheme of lubrication to the brake actuating shafts appears to be satisfactory. We have not had any sign of the shafts becoming inoperative. CROSS STEERING TUBE to LOP.G.77482. The cross steering tube ball contacts had not been modified for the lubrication. We made these standard. The load has remained fairly constant since this attention. | ||