Chassis specification sheet for the Bensport J.I. (B.3) model.
| Identifier | ExFiles\Box 3\4\ 04-page150 | |
| Date | 30th November 1932 guessed | |
| BENSFORT J.I. (B.3) CHASSIS SPECIFICATION. 1st.Car - Sports Saloon to N.Sch's 3478 and 3487. 2nd.Car - Sports Open Tourer - N.Sch.3479. These schemes do not show the 2.000 increase in Wheelbase. Wheelarch clearances N.Sch.3485. Layout of frame, transmission &c. N.Sch.3579. | Section | Description | Design | | :--- | :--- | :--- | | C'case & Bearings. | Bushes, Liners, Caps &c. for 2.250 dia. Journals. Pacing, guides &c for Petrol pump. Dry sump with tank engine filter. Flywheel casing reduced diameter. Delete magneto bracket facing. Torque arms at rear end modified. | Lec.3267 Lec.3267 Lec.3296 | | Torque Reaction Dampers. | May be altered. | | | Crankshaft. | 2.250 journals 6/8 Balance scheme. Same shaft to be standardised for 20/25. | Lec.3284 | | Conn.Rods. | Use standard 20/25. | Lec.3267 | | Pistons. | For turbulent head. E.56610 | Lec.3267 | | Cylinder Head. | Cast iron turbulent head 14 m {Mr Moon / Mr Moore} /m plugs. 1.400 Inlet Valves. Rocker cover monogram "B" not "RR". | Lec.3267 | | Cylinder Block. | Circular water jacket covers. Remove exhaust passage across cylinder. | Lec.3267 | | Valves and Fittings. | 1.400 Inlet valve. Rocker shaft in one piece. Rocker centres respaced. | | | Induction Pipes. | To suit S.U. Carburetters. | Lec.3277 | | ||
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).