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).
Faults and suggesting improvements for several car models concerning suspension, radiators, brakes, tyres, and floor boards.
| Identifier | ExFiles\Box 46\2\ Scan184 | |
| Date | 25th April 1922 guessed | |
| - 2 - actual load on each wheel, the spring cambers and actual clearances as obtained on 4-G-II so that we can try to work to this type of springing as a model. Also in expressing an opinion on 5 and 6-G-II, can you give similar particulars of these cars. [Handwritten] 4G Rolls near 880 lbs & behaviour clipping are due to friction R.{Sir Henry Royce} mentions several suggestions in his report such as alteration to bonnet beading, guards on the undershield, lubrication to the cam for the make and break, larger fan blades, carburetter control in the same place as the instrument board, stronger clutch springs, a place for spare fuse wires etc. These we are trying to embody on 7-G-II. R.{Sir Henry Royce} also complains of the radiator support springs being choc-o-bloc on 6-G-II. On examination, we find this is also the case on 7-G-II. It appears to be a works fault and incorrect springs have been fixed, but the matter is now being corrected. As this point been made right on 6-G-II, the radiator of which R.{Sir Henry Royce} now points out leaks. [Handwritten] See report As regards the tyre pressures - this point I have taken up with Roy{Sir Henry Royce}, and he has arranged an interview with their representative for next week at the Works here so that he can go into this matter. He feels that we shall easily be able to eliminate the marking on the tyres. Also although the pressure according to the Dunlop people appear to be the same as Michelins they rather fix a minimum tyre pressure for each tyre which for the 32 x 4½ tyre should not be less than 55 Lbs. and we propose to tackle this job with a minimum pressure of 40 Lbs. for cars loaded similarly as 4-G-II. The side brake lever on 7-G-II is a very bad one for rattles, and we are attempting to fix on to this car a spring under the trigger plunger so as to avoid this rattle. The floor boards on 7-G-II are inclined to be blown up. We appear to require some definite easily detachable fixing, a matter I have today taken up with Evernden,(who happens to be at the Works) along with several other body points in connection with 7-G-II. [Handwritten] It is damn silly to send out a car with floor boards not fixed down. G6 was awful until we nailed them down. I must also add that this job should be fitted in front on G6 In connection with the floor board job for the front seats on I certainly feel that the question of floor boards being entirely isolated from the gear box should be seriously considered as it is surprising the vibration which takes place at this point when the car is being run at high speeds. As regards Tyres. Roy{Sir Henry Royce} is rather anxious that we should try others apart from Dunlops and is pressing for a test of the Belgrave tyres which were supplied some time ago. Do you consider it would be in order for us to fix these on 7-G-II. This car is at present fitted with straight sided Dunlop tyres, similar to those fitted on 6-G-II. (R.W.Wire Wheels). [Handwritten] The tyres are doing very well on G5. They should complete the 10,000 miles which is excellent. Best place to test tyres is over here. Belgraves could be fitted to next car coming out. | ||