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).
Temperature test results comparing performance with a filled and unfilled dash during a hill climb.
| Identifier | ExFiles\Box 75\4\ scan0072 | |
| Date | 2nd May 1912 | |
| R.R. 148 (20 H) (W 414. 13.4.11) G Temperature tests with & without dash filled in, 1926 chassis 12" frame. ventilated engine guards. C.A.T. Fiddle from Macclesfield V.F. wound at the back. TABLE DATA: Column Headers: Atmos: Temp | Miles per hour | Water temp | Floorboards Top | Floorboards Under | Notes Test 1: Row 1: 61 | 25 | 58 | 21 | 40 | Temp: bottom of hill dash not filled in Row 2: 57 | 25 | Boiled after 5 miles | 24 | 60 | Temp. top of hill Test 2: Row 3: 58 | 25 | 58 | 16 1/2 | 26 | Temp. bottom of hill dash filled in Row 4: 56 | 25 | Boiled after 3 1/2 miles | 14 1/2 | 40 | Temp. top of hill Ventilated undershields were open each test. car was kept at full throttle with the brake. Landaulet body, back open windows dropped. RAA | ||