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).
Specification sheet for the Peregrine 2 (Revised) vehicle layout.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan429 | |
| Date | 19th September 1931 | |
| Secret HS{Lord Ernest Hives - Chair} EVI/19.9.31. SPECIFICATION OF PEREGRINE 2. (REVISED) LAYOUT SEE N.Sch.3344. GENERAL. Engine 17.7 HP. Wheelbase 10ft. Dash to rear axle 88ins. Max. overall length of body 106ins. Front track 56ins. Rear track 56ins. Frame height at full load front 17.750ins. rear 17.250. ENGINE. Bore 69m/m.{Mr Moon / Mr Moore} stroke 105m/m.{Mr Moon / Mr Moore} Capacity 2360 c.c. R.A.C. Rating 17.7 HP. In design the engine is to be scaled down from J.3. with the exception that some of the smaller units will be common to both. A complete specification of the engine will be sent by "E". CLUTCH. Scaled down edition of J.3. with the flexible torsion coupling. GEARBOX. Scaled down edition of the J.3. Synchromesh Box. four speeds and using the J.3 side levers. Gearbox and axle ratios to follow.from W.W. PROPELLER SHAFT. J.3. Mechanics joints and shaft. REAR AXLE. Scaled down from J.3. and having .650 of hypoid offset. Axle ratios will be sent later. Brake drums 12ins. internal diam. and the same front and rear. Simple direct operation by countershafts aft of the axle. FRAME. Deepest section 7ins. and made of .128ins. steel cold pressed. SPRINGS. Front. 35ins. and 1.500ins. wide. REAR 50ins. and 2.000ins. wide. PETROL TANK. Scaled down from J.3. but to have J.3 filler and fittings. BATTERY & BOX. Suitable size of stock battery but using the J.3.metal box. Suspension to follow the lines of J.3. BRAKES. R-R Servo-Assisted, using the same equalisers as J.3. WHEELS. Rims 18ins.x 4ins. Tyres 5.500ins. Dunlop wheels with double spokes. RADIATOR. Modern R-R appearance, but with loose shell construction following that of J.3. using the same cheapened shutter slat and the same thermostat and non-spilling cap. FRONT APRON. Similar to that for the 25HP. REAR APRON. Similar to that for J.3. SHOCK DAMPERS. Same as for J.3. FRONT AXLE. Scaled down from J.3. but without axle control. BONNET. Rivetless in aluminium. All fitting to be same as for J.3. | ||