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).
Blueprint of a modified jet bush and housing nut for a Spectre carburettor.
| Identifier | ExFiles\Box 93\2\ scan0072 | |
| Date | 9th August 1935 | |
| LEC4634. THE DEPTH OF THE FLAT ENDED HOLE TO RECEIVE THE JET NEEDLE, MEASURED FROM THE BOTTOM FACE OF THE SUCTION PISTON, MUST BE HELD TO A FINE LIMIT. FINE LIMIT ON DEPTH OF DRILLING. THE ASSEMBLY OF THE JET MECHANISM TO BE CHECKED BY GAUGES AS IN THE CASE OF THE 20/25 CARB. THIS MODIFIED JET BUSH IS INTENDED TO MINIMISE PRODUCTION ERRORS. WITH THE REQUISITE NEEDLE IT SHOULD BE FITTED TO ALL CARS. S/S. MODIFIED JET BUSH AND HOUSING NUT. SPECTRECodename for Phantom III CARB. LEC4634. SCALE 1/4. HS.{Lord Ernest Hives - Chair} 9.AUG.35. ROLLS-ROYCE, LTD. PRINT ROOM AUG 13 '35 DERBY. | ||