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).
Weight comparison of components between a Jaguar and a 4¼-Litre Bentley, detailing the advantages of the heavier parts.
| Identifier | ExFiles\Box 148\5\ scan0438 | |
| Date | 22th September 1938 guessed | |
| COMPARISON OF JAGUAR WITH 4¼-LITRE BENTLEY. Item. Amount heavier than corresponding Jaguar part. Advantage gained from increased weight. BODY: 17 lbs. SILENT BODY MOUNTING. REAR ROAD SPRINGS: 25 lbs. DURABILITY. BRAKES: 16 lbs. SERVO OPERATION. ENGINE: 35 lbs. GREATER BEARING AREA. HEAVIER FLYWHEEL GIVES BETTER SLOW RUNNING. PETROL SYSTEM & PETROL: 35 lbs. 4 GALLS. MORE PETROL CARRIED. SIDE CHANGE SPEED LEVERS.: 5 lbs. CENTRAL CHANGE NOT ACCEPTABLE. ONE SHOT CHASSIS LUBRICATION.: 18 lbs. 12 oz. MARKED CONVENIENCE FOR CUSTOMER. DAMPER GOVERNOR CONTROL.: 9 lbs. 2 oz. RIDING REFINEMENT. TOTAL: 160 lbs. 14 oz. | ||