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).
Comparison of spring and body weight specifications for chassis GCK.52 and G.A.9.
| Identifier | ExFiles\Box 47\5\ Scan067 | |
| Date | 10th August 1926 | |
| [Top left stamp: RECEIVED 11 AUG 1926] [Top right, typed]: Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} C BY22/H. 10.8.26. [Top right, handwritten]: X41198 CHASSIS GCK. 52. SIR JOHN LATTA. Referring to CWB8/GM. 5.8.26. a comparison of the two chassis referred to is as follows:- G.A.9. Front. 650 lbs. Rear 900 lbs. These were never changed, and have given complete satisfaction. G.C.K.52. Originally:- Front 650 lbs. plus wides, 25% stiffer. Rear 900 lbs. plus wides. These were changed later to:- Front 700 lbs. Rear 1000 lbs. the fronts being 25% stiffer type. The body weights are as follows:- G.A.9. - 9 cwt. GCK.52. - 10 cwt. estimated. 11½ cwt. actual. It was this increase of 1½ cwt. on the body which led us to increase the strength of the springs when we modified same in BY {R.W. Bailey - Chief Engineer} /C6/G.7.5.26. I judged from my conversation with you that you were of the opinion that GCK.52. as now sprung compares quite favourably with the standard car in the Experimental Dept. which is considered to be correctly sprung. BY. {R.W. Bailey - Chief Engineer} [Handwritten signature: BM] | ||