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).
Water boiling test conducted on the Broccone Pass.
| Identifier | ExFiles\Box 24\4\ Scan007 | |
| Date | 13th September 1912 | |
| Mr Barrington. REPORT OF TEST ON BROCCONE PASS. WATER BOILING Road. Good surface, winding, nine wide hairpin bends. Grade varies from 9 to 10%. Length 9 miles. 2nd gear used throughout. Weak mixture. 1st ascent Plate off Air tempt. bottom summit 27°c 12°c Loss of water. 2 1/4 ltrs. 2nd ascent. Plate on 24°c 10°c 4 ltrs. 3rd ascent. Plate on bonnet off 20°c 8°c No water lost. water temp. 84°c ek | ||