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).
Test report on steering complaints and subsequent alterations for car 91 G.Y.
| Identifier | ExFiles\Box 47\2\ Scan417 | |
| Date | 2nd December 1930 guessed | |
| FINAL TEST:- CONDITION OF CAR AS 2ND TEST. ALTERATIONS:- FRONT DAMPERS RESET TO 100LBS, EACH WAY. NEW COLUMN FITTED WITH TIGHTER NUT & WORM. FRICTION VERY LITTLE IN EXCESS OF ORIGINAL COLUMN. (AS CHECKED ON PENDULUM LEVER) RESULT:- NO HIGH SPEED WOBBLE. SLIGHT JOGGLE OCCASIONALLY. DRY ROADS. STEERING A LITTLE TIGHTER THAN WITH ORIGINAL COLUMN. SELF CENTERING 75%. DIRECTIONAL GOOD. (AS 2ND TEST) STEERING AS NEAR PERFECT AS POSSIBLE (PASSED BY MR. NORTHEY) --- 91 G.Y. SALES CAR. STEERING COMPLAINT. 1ST TEST:- CONDITION OF CAR. WHEELS & TYRES:- DUNLOP 7" x 20" BALANCED AT 38LBS/SQ". FRONT DAMPERS:- 75 & 40LBS; 70 & 60 LBS. CROSS STEERING TUBE:- LOAD OF 15 LBS. TRACK:- 1/4" TOE-IN. RESULT:- NO HIGH SPEED WOBBLE. DRY ROADS. BAD JOGGLE PERIODS ABOVE 65 M.P.H. WORSE THAN 137.XJ. LONGER PERIODS, SAME INTENSITY. FRONT AXLE AGAIN TOO LIVELY, INSUFFICIENT DAMPING. 2ND TEST:- CONDITION AS BEFORE. ALTERATION:- FRONT DAMPERS RESET TO 100LBS EACH WAY. RESULT:- NO JOGGLE PERIODS, SLIGHT JOGGLE OCCASIONALLY. DRY ROADS. STEERING GREATLY IMPROVED AT HIGH SPEED. DIRECTIONAL GREATLY IMPROVED. STEERING GENERALLY SATISFACTORY. PASSED O.K. --- ALL TESTS CARRIED OUT ON THE WELWYN BY-PASS ROAD; GOOD SURFACE EXCEPT FOR TWO BAD PATCHES. GH Radcliffe. | ||