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).
Proposing a simpler method for ignition wiring by running the high-tension conductors through round tubes.
| Identifier | WestWitteringFiles\Q\April1927-June1927\ 95 | |
| Date | 26th May 1927 | |
| TG-RG.{Mr Rowledge} FROM R.{Sir Henry Royce} C. to [redacted] HS.{Lord Ernest Hives - Chair} ORIGINAL R1/M26.5.27. IGNITION WIRING. X4029 Referring to your Sch. DES. 641., shewing scheme of ignition wiring for the plugs between the Vee, I do not altogether like this scheme as arranged, as it does not appear to be very practical to tape 5 H.T. conductors together in a row. I think the scheme can be made much simpler by carrying the wiring in round tubes of fibre, paper, or bakelite. The five wires on the rear half of the engine for each block could be carried in a length of 1" external diameter tube supported by suitable clips from the two end nuts on the induction pipe (see sketch) - [Sketch annotations] THIN SPRING STEEL CLIP THICKER GAUGE STIFF CLIP while the three ignition wires for the front half of the engine on each plug could be similarly carried in .75 tubing. The same idea could be applied in conveying the wiring from the magneto upwards at the rear of the engine. There appears to be sufficient room for two round tubes, one above the other at this point, of 1" or larger diameter as required. R.{Sir Henry Royce} | ||