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).
List of proposed modifications and considerations for an engine, likely the Condor.
| Identifier | ExFiles\Box 43\1\ Scan042 | |
| Date | 16th January 1923 guessed | |
| - 2 - (8) Consider adopting fixed jet with vacuum control on the float feed for altitude control in place of needle control. (9) Where camshaft casings are bolted together cut off flange on one half, and put in sliding joint as "Condor". (10) Couple magneto timing control to throttle control. (11) Reduce number of rubber joints in water circulation. (12) Consider using new type crankshaft with re-arranged throws if this is successful on "Condor". | ||