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).
Querying the unsprung weights of the PII model compared to the PI model.
| Identifier | ExFiles\Box 16\7\ Scan271 | |
| Date | 28th May 1930 | |
| x7410. To Mr Robotham Oy. McMillan gives. PII Unsprung weights. Front 435 Rear 736 JMa25 Rm{William Robotham - Chief Engineer}: This is 5 lbs. more than PI in front 56 lbs. more than PI at rear. I thought the unsprung weights were less - especially at rear - on PII. Do you confirm? Oy May 28/30. | ||