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).
Test conditions and notes for a vehicle at Brooklands, covering carburettor, fuel, steering, and spark plug configurations.
| Identifier | ExFiles\Box 29\3\ Scan195 | |
| Date | 2nd June 1930 | |
| F.{Mr Friese} Dodd. From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} x788. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/MJ.2.6.30. BROOKLANDS 2.6.30. CONDITION (1). Air Silencer Carburetter. Plain Bonnet. Lap Speed. Top & Bottom Rad. Temperature. Oil Temp. Gearbox Temperature. Acceleration 10 - 30, 30 - 60, 60 - 70. All figures taken (a) C.O. open. (b) C.O. closed. (c) Ventilated Bonnet C.O. open. CONDITION (2). Standard Carburetter. Plain Bonnet. Lap Speed. Top & Bottom Rad. Temp. Scuttle Temp. Oil Temp. Gearbox Temp. Acceleration 10 - 30, 30 - 60, 60 - 70. All figures taken (a) C.O. open. (b) C.O. closed. (c) Ventilated Bonnet. (d) Fan on & Fan off PETROL SUPPLY. If any starvation takes place in the system it should be located. We suspect that the non-return valve in the delivery line to the autovac may cause trouble and this should be tried the right way up and inverted. Also the porous pot filter may be replaced by the plate element in case of shortage and if this persists the filter element may be removed completely. STEERING. Wider Track 19" American, 20" Dunlop, 20"/Dunlop to be compared for joggles and selectivity at 30, 35 and 40 lbs/sq.in. pressure, rear tyres 35 lbs/sq.in. Standard 20" wheels and tyres to be tried with dumbell across the front of the car at 35, 40 and 45 lbs/sq.in. and selectivity and joggles recorded. Tyre pressure to be checked when thoroughly warm. PLUGS. New K.L.G. and Lodge compared for preignition. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||