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).
List of road springs ordered in 1930 for the Phantom II and 20 HP models.
| Identifier | ExFiles\Box 16\7\ Scan348 | |
| Date | 13th December 1930 | |
| FOR FILES. X7410. ROAD SPRINGS ORDERED 1930. PHANTOM II. X.7410. X.5410. X.4429. FRONT. 19.5.30. 1 Pair 1100. Free Camber 3.5 Pos. Loaded Camber 1.00 Pos. Design left to Firths. Rm{William Robotham - Chief Engineer}4/MJ.8.10.30. 1 Pair. Pos Camber 5.5" Loaded Camber 5.5" Loaded Camber Flat. Poundage 1160. Rm{William Robotham - Chief Engineer}1/AD.18.11.30. 1 Pair. Free Camber 4.1. Loaded Flat Poundage 1100. Rm{William Robotham - Chief Engineer}3/MJ.29.11.30. Free Camber 4.5" Loaded Flat. Poundage 1100. REAR. Rm{William Robotham - Chief Engineer}4/AU.8.10.30. 1 Pair. 1300 lbs. 12" Pos Camber 1300 lbs @ Flat Camber. Rm{William Robotham - Chief Engineer}4/MJ.8.10.30. 1 Pair. Free Camber 9.75" Loaded Camber Flat. Poundage 1280. Rm{William Robotham - Chief Engineer}1/AD.18.11.30. 1350 lbs. 1 Pair. Free Camber 9.25" Loaded Camber Flat. Rm{William Robotham - Chief Engineer}3/MJ.29.11.30. Free Camber 10.25. Loaded Flat. Poundage 1350. 20.HP. FRONT 14.5.30. 1 Pair 675 lbs. Free Camber 5.00" ) Pos Loaded Camber 1.00" ) Grooved. Tested on Bump 1. ran 23 hours, other 41 hours. Firth's best design. 10.7.30. 1 Pair 650 lbs. Specification as for springs ordered 14.5.30. 26.9.30. 650 & 625 lbs. 2 Pairs Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/ Free Camber 5" Pos) Pos. Loaded " 1" Pos) Grooved. 1 Pair taken to U.S.A. Rm{William Robotham - Chief Engineer}2/MJ.13.12.30. 650 lbs. 2 sets. Initial Camber 3.375. Loaded Camber Flat. Design C.K. REAR. Rm{William Robotham - Chief Engineer}4/AU.8.10.30. 820 lbs. 1 Pair Rear. Free Camber 8.6" Loaded Flat 1030 lbs springs at .5 Neg Rm{William Robotham - Chief Engineer}6/AU.21.10.30. Alteration to 700 lbs ) Temp. 20 H.P. Rear Springs ) Sch. Free Camber 6.25 Pos ) Only. Loaded Camber .5 Neg. ) Poundage 930 Rm{William Robotham - Chief Engineer}2/MJ.13.12.30. 950 lbs 2 Pairs. Free Camber 5.9" Loaded Camber .5" Neg. | ||