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).
Number and size of balance weight washers for 20 HP Chassis tyres.
| Identifier | ExFiles\Box 58\1\ Scan091 | |
| Date | 19th December 1929 | |
| Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} x5820. BY23/N.19.12.29. Re: 20 HP. Chassis - Tyres. Referring to your memo Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/MJ.19.12.29, whilst we agree the balance weight washer 1.35" dia. would make a neater job owing to the fact that only seven washers need be used, but in view of the fact that we have so many cars on the road fitted with balance weights 1.25" dia. I think it is necessary we should continue to use this size and increase the number from 7 off to 9 off. I am instructing the Works accordingly. BY.{R.W. Bailey - Chief Engineer} | ||