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).
Design of a petrol gauge, instrument board accessibility, and a fix for a speedometer noise.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan192 | |
| Date | 1st July 1930 | |
| HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} C. to SG.{Arthur F. Sidgreaves - MD} BY.{R.W. Bailey - Chief Engineer} [Struck through] C. to CX.{Major Len W. Cox - Advertising Manager} OY. PETROL GAUGE. We think this should be made to suit the present production because we cannot alter the petrol tank for every accessory that comes along. Assuming that the petrol tank is convenient at present with its high filler, and vent in the filler, the gauge must be made so that it shall not fail even though our present vent is obstructed by the 'muff' system of filler nozzle, or any other means. EV.{Ivan Evernden - coachwork} and I have come to the conclusion that we must agree with you that it is impossible to avoid the 3 pipe lines, and still be absolutely safe to meet all filling conditions. Everything should be done that is possible to make the connections at the back of the instrument board as easy as possible to handle, and shewn clearly in the instruction book. It has occurred to me that owing to the difficulty of getting spanners and box keys and screw drivers to the rear of the board we might use wing nuts or thumb screws in many cases. EV.{Ivan Evernden - coachwork} thinks the thumb screws would be most useful on the clamps holding the instruments so that the instruments may be easily pulled out of the grouping plate, and after having got the instruments out it is an easy thing to use any convenient tool to undo the connections. It is now concluded that all instruments must go in from the back, they must be very easy to put in and take out, and that the connections are all on before the instruments are put in position. EV.{Ivan Evernden - coachwork} thinks there is no chapter, and no mention of the instrument board, and the care and reason of the instruments, in our standard instruction book. (The squawk on 16-G-4, at WW. which you thought was on the (speedometer drive was cured by removing the clip and increasing the (radius of the bend of the flexible driving shaft. Great care (should be taken that such bends should have at least a radius of 10".) R.{Sir Henry Royce} [Handwritten annotations in top right corner:] x4038 x7460 x5460 [Handwritten annotations next to text:] x530 x5530 | ||