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 report data for gear box pressures and various fluid temperatures at different speeds with the radiator grill on and off.
| Identifier | ExFiles\Box 91\4\ scan0082 | |
| Date | 7th July 1935 guessed | |
| (2) GEAR BOX PRESSURES. Front Compartment 30 MPH...... .05 .10") 40 " ....... .1 .2 ) 50 " ....... .2 .4 ) 60 " ....... .25 .50 ) 70 " ....... .25 .50 ) 80 " ....... .3 .6 ) Temperatures. Petrol Pump. Gear Box. Oil Temp. Engine Oil Water 54°c 70°c 105°c 84°c Radiator Grill on. Reading taken after 3 miles at 80 MPH. 30 MPH...... .05 .10 ) 40 " ....... .1 .2 ) 50 " ....... .2 .4 ) 60 " ....... .25 .50 ) 70 " ....... .25 .50 ) 80 " ....... .3 .6 ) Temperatures. Petrol Pump. Gear Box. Oil Temp. Engine Oil Water 53°c 94°c 105°c 84°c Radiator Grill Off. We carried out a test with the Radiator Grill on and off, and give you the results. Reading every Mile at 70 MPH. Radiator Grill Off. I N Air. Engine Oil. Water. Petrol Pump. Oil Temp. Gear Box. 30 105 78 54 84 29 105 76 52 86 29 105 76 51 86 29 105 77 51 86 29 105 77 51 88 O U T. 30 105 78 51 88 30 105 78 51 88 30 105 77 51 89 30 105 77 51 90 30 105 78 51 90 I N (Radiator Grill On) 30 102 78 53 70 30 105 80 53 72 30 105 80 54 74 30 105 82 54 76 30 105 83 55 78 O U T. 30 105 83 55 80 30 105 82 55 82 30 105 82 55 84 30 105 83 55 84 30 105 83 54 84 ----------------- [Signature: G.W.Hancock] G.W.H. | ||