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).
Table documenting changes to the road spring periodicities for Burgess' Car 27 R.Y.
| Identifier | ExFiles\Box 17\1\ Scan149 | |
| Date | 27th September 1934 guessed | |
| Burgess' Car 27 R.Y Road Spring Periodicities | | Front | Rear | Type of Springs Front | Type of Springs Rear | |---|---|---|---|---| | Originally | 128 | 76 | LOW RATING | low RATING | | 1st Change | 96 | 84 | Low RATING | Normal RATING | | 2nd Change | 88 | 80 | LOWER POUNDAGE low RATING | NORMAL RATING | 3 | ||