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).
The arrangement of the magneto control gear for the Goshawk II engine.
| Identifier | WestWitteringFiles\H\February1922\ Scan13 | |
| Date | 10th February 1922 | |
| To Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} c. to M.{Mr Moon / Mr Moore} c. to Wor.{Arthur Wormald - General Works Manager} c. to Ay. c. to Hs.{Lord Ernest Hives - Chair} ✓ ORIGINAL. RECEIVED FEB 4 1922 X3517 GOSHAWK II. - MAGNETO CONTROL GEAR X4221 X4239 We send you herewith drawing No. Lec 1532 shewing the above. The control gear has been arranged so that the magneto can be adapted to any production engine as desired once the necessary bosses have been added to the crank-case for a small bracket at the rear end situated over the fly-wheel. The stud holes for this latter should be drilled and tapped in readiness. It will be unnecessary to plug them as they do not break through the fly-wheel casing. Generally speaking we anticipate that where a magneto is required, the battery ignition will be retained, the latter being used regularly and the magneto as a stand-by.{R.W. Bailey - Chief Engineer} The controls however can be arranged for either or both ignitions. The vertical control shaft at present used for the battery ignition only has been modified somewhat to take both ignition controls, but the facings on the crank-case and water jacket cover remain unaltered. The standard production chassis fitted with battery ignition only we think should have the vertical control shaft arranged as on Lec 1532, and then the least possible alteration will be necessary when adapting a magneto. In this respect it will be advantageous to clip on the magneto control lever to this shaft with biting in bolt instead of brazing. (1) | ||