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 components for Peregrine and Bentley models, detailing shared and specific parts.
| Identifier | ExFiles\Box 179\1\ img192 | |
| Date | 23th December 1931 guessed | |
| SECTION COMMON TO BOTH PEREGRINE AND BENTLEY SPECIFICATION F PEREGRINE SPECIAL TO BENTLEY ENGINE Crankshaft, con rods, and pistons, valves, springs, fittings & guides. Water and oil pumps, oil relief unit. Petrol pump & other small accessories. Scaled down from J.{Mr Johnson W.M.} 3. Bore 69.5 mm Stroke 105 mm. Approx: 2.720 X 4.125. Tax £18. RR. carburetter. Overhead camshaft engine with s'charger in front driven off crankshaft. Carb: bought out (?) CLUTCH AND FLYWHEEL Clutch & casing including operating shaft. Single plate scaled down from J.{Mr Johnson W.M.} 3. Stronger clutch spring load. PROPELLER SHAFT Mechanic's Joints, common shafts, different lengths. Same as J.{Mr Johnson W.M.} 3. except shaft. Shorter shaft. GEARBOX (1st suggestion.) WHEELS & shafts only. Synchro mesh 3rd. speed scaled down from J.{Mr Johnson W.M.} 3. with no servo & with side lever. Another box with same wheels, but central levers. GEARBOX (2nd suggestion.) Complete box with central levers & no servo scaled down from J.{Mr Johnson W.M.} 3. Synchro mesh 3rd. speed scaled down from J.{Mr Johnson W.M.} 3. No servo, & with central levers. Position of levers. REAR AXLE AND TUBES Whole axle and tubes except gears. Scaled down J.{Mr Johnson W.M.} 3. 3.75 to 1 ratio. Higher ratio gears 4.1 to 1 ratio. REAR BRAKES All parts. Single set of shoes, 12" drums, 2 ropes to shoes, rest scaled down from J.3. ----- RADIATOR & SHUTTERS Thermostat and shutter mechanism. Scaled down from J.{Mr Johnson W.M.} 3. J.3. shutter mechanism & thermostat. Bentley radiator, sloping. | ||