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).
Performance and noise comparison report between a Phantom II model and a Cadillac.
| Identifier | WestWitteringFiles\U\August1930-November1930\ Scan102 | |
| Date | 17th October 1930 | |
| -7- HS{Lord Ernest Hives - Chair}/SM/17.10.30 contd. P.II. appears to have a greater maximum speed. The carburation is not good below 30 M.P.H. The engine is not as free from sound as one might anticipate but naturally one cannot feel the low speed power impulses as much as P.II up to 30 M.P.H. though above that speed there is little to choose in smoothness as the torque impulses of the 8 cyl. engine even out. Above 65 M.P.H. the Cadillac definitely becomes rather fussy until towards maximum speed quite a roar develops. The engine is far from being free from tappet noise when idling in spite of the claims made for the self adjusting device. The carburetters are, on the whole, quieter than the average American. The engine appears to have thin strips of rubber under the front feet. The fuss mentioned is almost entirely confined to audible noise rather than anything that can be felt in the front seats, and is not very noticeable in the back seats. The body seemed to assist being free from booms. Comparing the front and back seat noises with 94-G.N. there is not a very marked difference between the two cars other than the absence of torque reaction on the Cadillac. There is rather more fuss at 50-60 M.P.H. in the P.II. rear seats. The Cadillac speedometer appeared to be correct up to 60 M.P.H. All the bonnet ventilators were open on | ||