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).
Technical drawing and calculation sheet detailing EAC-1 steering geometry.
| Identifier | ExFiles\Box 73\2\ scan0178 | |
| Date | 8th January 1924 | |
| X9940 DETAILS OF EAC-1 STEERING. V3441 X9740 X4578 Effective tyre dia. to give true centre point steering = 35.7". Actual effective tyre dia. in practice taken as 33". Deviation in centre point due to this = .228". Torque tending to deflect the steering when one wheel locked on a road, - load on front axle 22 cwts., co-efficient of friction .6" = 740 X .228 lbs.ft. / 12 = 14.1 lbs.ft. PIVOT BACKWARD LEAN = 1º to vertical or 3/16" on std. springs in pivot length. | ||