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).
Performance graph comparing large and small bore induction manifolds on a 'Japan' engine with twin Zenith carburettors.
| Identifier | ExFiles\Box 5\4\ 04-page240 | |
| Date | 28th November 1930 guessed | |
| TWIN ZENITH CARBS ON "JAPAN" COMPARISON OF LARGE & SMALL BORE INDUCTION MANIFOLD. 26 M/M CHOKES IN CARB. 6.25/1 COMPn RATIO. 116° CAMSHAFT OPEN EXHAUST SMALL BORE PIPE * LARGE BORE PIPE + B.H.P. P.M.E.P. R.P.M. Small Bore (Hand Fitted) Large Bore Manifold Small Bore Large Bore | ||