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).
Satisfactory performance and dimensions of 2-stage hydraulic jacks.
| Identifier | ExFiles\Box 139\2\ scan0191 | |
| Date | 17th January 1935 | |
| SECRET. +311) W/S - Cx.{Major Len W. Cox - Advertising Manager} c. to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Bwg.{J. C. Bowring}3/KW.17.1.35. Hydraulic Jacks. Thank you for your memo. Cx.{Major Len W. Cox - Advertising Manager}7/KW.15.1.35 re the above. The 2-stage Jacks referred to have so far proved very satisfactory and free from leaks. Unfortunately Da.{Bernard Day - Chassis Design} has not yet had an opportunity of drafting out a scheme for the SpectreCodename for Phantom III, but is hoping to do so in the near future, incorporating a similar 2-stage Jack. For your interest we give below the dimensions of the 2-stage Jack :- Closed length 9.500" Extended 19" Dia. of main cylinder 2.500" These Jacks give a ground clearance of 3.00" as fitted to 28-EX. Hs{Lord Ernest Hives - Chair}/J.Bowering. | ||