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).
Page 2 of a report comparing the weights of standard and pedestal pistons and noting test results for car 7-EX.
| Identifier | WestWitteringFiles\P\2July1926-September1926\ Scan108 | |
| Date | 30th August 1926 guessed | |
| contd :- -2- should be an advantage. The following is a comparison of the weights of the standard and pedestal pistons :- WEIGHT. | | Complete with Gudgeon pin but no piston rings. | Aluminium piston only. | Gudgeon pin complete without pedestals and fixing bolts. | |---|---|---|---| | Standard. | 2.648 lbs. | 2.000 lbs. | .453 lbs. | | Pedestal. Lec.2237. | 2.750 lbs. | 1.775 lbs. | .336 lbs. | We have since tested - under light conditions - another set of pedestal pistons in the engine for car 7-EX. and found them to be quite good and silent in operation. Hs{Lord Ernest Hives - Chair}/A.C.Lovesey. | ||