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).
Modifications for a Goshawk battery ignition distributor unit.
| Identifier | ExFiles\Box 54\5\ Scan196 | |
| Date | 14th June 1922 | |
| To RHC. {R. H. Coverley - Production Engineer} from EFC. {E. Fowler Clarke - Electrical Engineer} c. to Ev {Ivan Evernden - coachwork} /Ds. X3485 EFC {E. Fowler Clarke - Electrical Engineer} 3/T14.6.22. X.3485 - GOSHAWK BATTERY IGNITION. A complete up-to-date combined distributor, contact breaker and governor unit of which you will be making up a number, will apparently comprise the following modifications :- 1. CAM. The cam will be that giving the extra lift, but there are two such cams - (a) D.50710 without providion for lubricating wick. (b) D.50732 with providion for lubricating wick. The complete unit supplied to us should be with a cam of each kind for comparative tests. 2. ROTOR. The rotors will be those to drawing D.50751 with thickened Elo material and keyway removed from opposition to inserts in moulding, also larger screw centres securing the blade which will not be D.50752. 3. RUBBING BLOCK. It has not at present been seriously proposed that we depart from the continental bakelite rubbing block for standard, but for our experimental set we should be supplied with both this and grey fibre rubbing blocks to the same drawing. 4. SPRING. The finally approved spring has not been instructed, but will be in a day or two, to D.50793. This will contain modification consisting of a slot to improve ease of withdrawal of spring. 5. DISTRIBUTOR BASE. The set supplied to us for experimental purposes should have the modification providing lubrication for the cam D.50732 with lubricating wicks, so that on our experimental set running can be compared with and without lubrication. The D.O. instructions sheet for this modification is No.90735. 6. CONDENSER. The final details of the condenser will not be completed by the D.O. until the final construction of these is proved out practically. The condensers should be within the limits we have given for capacity, viz., .275 to .325 mf. 7. Contd. | ||