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).
Specification and test results for a Dunlop Jack for the Peregrine model.
| Identifier | ExFiles\Box 48\1\ Scan057 | |
| Date | 1st December 1932 | |
| X4124. For Files. 1.12.32. DUNLOP JACK FOR PEREGRINEExperimental Bentley car never produced / Aero Engine. The Dunlop Jack (Type D.L.5) made for Dunlops by Lake & Elliott, and agreed to for PeregrineExperimental Bentley car never produced / Aero Engine,(29.11.32.) has the following particulars.. Minimum height 5.00" Maximum height 12.250" Mechanical lift. 7.250" Weight (with handle) 7.75 lbs. This jack was tested by lifting one side of the front of a PeregrineExperimental Bentley car never produced / Aero Engine car from bare rim position to fully inflated tyre position (i.e. throughout its maximum range) 150 times. The jack completed this test satisfactorily. The dimensions of this jack satisfy the conditions demanded by the PeregrineExperimental Bentley car never produced / Aero Engine II car fitted with 5.5 x 18" tyres on 18" rims. Hs {Lord Ernest Hives - Chair} /Lid. {A. J. Lidsey} | ||