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).
Successful type test on phosphor bronze braided H.T. ignition cables, recommending their adoption.
| Identifier | ExFiles\Box 168\1\ img135 | |
| Date | 14th November 1933 | |
| 86117 Rg.{Mr Rowledge} From Hs{Lord Ernest Hives - Chair}/Wst. c. to Sg.{Arthur F. Sidgreaves - MD} c. to Wor.{Arthur Wormald - General Works Manager} c. to By.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to Mr. Jaques. Hs{Lord Ernest Hives - Chair}/Wst.4/MA.14.11.33. PHOSPHOR BRONZE BRAIDED H.T. IGNITION CABLE. We have now completed a type test on Goshawk 35 with a complete set of metal braided ignition cables with the braiding wires of tinned phosphor bronze instead of tinned copper. The wires at the conclusion of the test were found to be quite OK, this being the first occasion that a set of wires has completed a type test without the braiding having been damaged on the exhaust wires due to the rubber expanding and bursting the braiding. A set of wires removed from type test engine EXP.3 with the standard braiding shewed 9 cables to be damaged due to burst braiding. This cable has therefore proved its superiority over the standard cable and we recommend that we apply for an A.M. modification for this item in order that we may adopt this type of cable on production as soon as possible. A standardization sheet is being circulated. Hs{Lord Ernest Hives - Chair}/Wst, | ||