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).
Rear spring particulars and rating curve for a Supercharged Graham vehicle.
| Identifier | ExFiles\Box 126\1\ scan0197 | |
| Date | 25th January 1935 | |
| x4707 To E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}21/KW.25.1.35. Rear Spring Particulars - Supercharged Graham. O.S. N.S. Bump Buffer clearance, car empty 3" 3¼" Rebound " " 1¾" 1¾" Bump " 2 passengers 2⅜" 2⅜" Camber of spring - car empty 2-9/16" 2⅜" Free camber 7½" 7½" These particulars were taken owing to the unusually small rebound clearance. Rear end of spring is 3¼" lower than front end. Rating curve gives following results :- Deflection (inches) Load 1 1 cwt. 56 lbs. 2 3 cwts. 3 4 cwts. 35 lbs. 4 5 cwts. 87 lbs. 5 7 cwts. 14 lbs. Hs{Lord Ernest Hives - Chair}/H.Grylls. | ||