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).
Requesting further particulars on a car spring and detailing stress improvements on new springs.
| Identifier | ExFiles\Box 106\1\ scan0029 | |
| Date | 10th June 1925 | |
| To Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} SECRET. DAL/M10.6.25. Handwritten: X5410 INDIA - 9-G-111. X.5770 X.5410 Referring to your Hs{Lord Ernest Hives - Chair}4/LG8.6.25., would you kindly send us further particulars of this spring, that is, as to weight, number plates, thickness if possible, etc. This was the one we saw on the car here which had very little clearance below the rubber buffer. It is possible that it was initially overstressed. The stress on these springs has been dropped over 10,000 lbs.per sq.in. and on the new 25% springs over 15,000 lbs.per sq.in., and in consequence we should certainly expect some improvement. DA.{Bernard Day - Chassis Design} | ||