Letter from B. S. Cunningham discussing the procurement and properties of 100 octane fuel compared to 87 octane fuel for engine use.
| Identifier | ExFiles\Box 174\2\ img228 | |
| Date | 3rd November 1927 guessed | |
| B. S. Cunningham Telephone, Fairfield, Conn-140 Greens Farms, Conn. weighs only 1050 lbs. I would like to compare this with the weight of the 3 ½ or 4 ¼ litre Bentley engine. I have obtained some 100 octane fuel which I am going to mix with the 87 octane I have been using, in order to cut out the pinking which I am beginning to get due to carbon probably. The 100 octane fuel is being sold here in airplane motors, and costs only about a little less than 1 shilling per gallon. I understand it doesn't contain any more ethyl than the 87 octane fuel, but is just more highly refined. I haven't as yet used any of it. Do you think it could cause any damage to the valves or pistons? It seems quite easy to purchase around here. The drive I took in the new | ||
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).