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).
Comparative table of specifications and performance data for various car models.
| Identifier | ExFiles\Box 24\5\ Scan294 | |
| Date | 23th July 1930 guessed | |
| CAR, TYPE | BORE. STROKE DISPLACEMENT CAR WT. TOTAL | EFFECTIVE TYRE. CIRCUM. 50 Lbs/□" | DIRECT DRIVE RATIO | TYPE OF MATRIX. | TOP WATER TEMP. AT 60 M.P.H. ATS. TEMP 20°C VENTILATED BONNET. | MAX. LAP SPEED. MARMON 8-79 R.A.C. RATING 32.5 SEDAN 5 SEATER | 3 3/16 x 4 3/4, 4960 C.C., COMP RATIO 5.5 - 1, WT. 4200 Lbs. | 95.75 INS. | 4.45 - 1 | ZIG ZAG RIBBON WITH INDIRECT FINS | 85°C. AT 53 M.P.H. ENGINE PERFORMANCE UNSATISFACTORY | ESTIMATED 67 M.P.H. HISPANO 1927 2 SEATER COUPE R.A.C. RATING. | 3.938 x 5.512, 6597 C.C., WT. 5000 Lbs. | 108.0 INS. | 3.375 - 1 | ZIG ZAG RIBBON WITH INDIRECT FINS | 74°C. | 85 M.P.H, C.O. OPEN. PIERCE ARROW 1930 6 SEATER LIMOUSINE R.A.C. RATING 40 H.P. | 3.5 x 5.0, 6300 C.C., COMP RATIO 5 - 1, WT. 5200 Lbs | 98.0 INS. | 4.5 - 1 | ZIG ZAG RIBBON WITH INDIRECT FINS | 82°C. | 69.5 M.P.H. GRAHAM PAIGE. 1930 5 SEATER WEYMAN RATING 29.4 | 88.9 x 127, 4700 C.C., COMP RATIO 5.35, WT. 4124 Lbs. | 95.25 INS. | 3.643 | FIN AND TUBE | 77°C | 71.66 M.P.H. R.{Sir Henry Royce} I 19 Ex. CAB DE VILLE 7 SEATER R.A.C. 43.4 H.P. | 4.25 x 5.5, 7680 C.C., COMP. RATIO 4.6, WT. 5362. | 105 INS. | 3.727 | PLAIN AIR TUBE | 71°C. | 82.5 M.P.H., C.O. OPEN. | ||