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).
Comparison of the weights of standard and pedestal pistons and results of subsequent testing.
| Identifier | ExFiles\Box 48\1\ Scan184 | |
| Date | 10th September 1926 guessed | |
| contd :- -2- should be an advantage. The following is a comparison of the weights of the standard and pedestal pistons :- [TABLE START] Main Header: WEIGHT. Row/Column Headers: | Complete with gudgeon pin and no piston rings. | Aluminium piston only. | Gudgeon pin complete without pedestals and fixing bolts. Row 1: Standard - | 2.648 lbs. | 2.000 lbs. | .453 lbs. Row 2: Pedestal. Lec.2237. | 2.750 lbs. | 1.775 lbs. | .336 lbs. [TABLE END] 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.{Mr Adams} C. Lovesey. | ||