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).
Dynamometer readings after altering the cam wheel timing on chassis 1144.
Identifier | ExFiles\Box 33\4\ Scan060 | |
Date | 4th October 1909 | |
R.R. 148 (20 H) (H.{Arthur M. Hanbury - Head Complaints} 360. 16.9.09) E.P. 4941. X1770 4000 Reads taken by Lowe on Dynamometer 4/10/09. 1144 Chassis was improved in power by altering Cam wheel 1 tooth later. Previous timing - average in Mins. = I.O. I.C. E.O. E.C. 3 5/6 4 3/4 21 1/4 + 5/12 Present timing - average in Mins. I.O. I.C. E.O. E.C. 5 1/2 5 23/24 22 1/2 + 2 1/4 Revs. | Gain H.P. | Loss H.P 750 | 7.4 | 1000 | | 1.4 1250 | 1.7 | 1500 | 5.1 | Had engine been run as long at 1000 revs. with altered timing, power would doubtless have been better than previous (signed) LR{Mr Ellor} | ||