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).
Graph and table comparing practical and theoretical results of steering wheel movement induced by front axle movement.
| Identifier | WestWitteringFiles\Q\February1927-March1927\ 7 | |
| Date | 1st March 1927 guessed | |
| ANGULAR MOVEMENT OF STEERING WHEEL INDUCED BY FRONT AXLE MOVEMENT PRACTICAL RESULTS. GRAPH: Y-Axis: STEERING WHEEL ROTATION X-Axis: AXLE MOVEMENT RELATIVE TO THE FRAME Data line 1 (upper): 20. H.P. Annotation 1: JG III K.{Mr Kilner} SERIES .700 LEAD OUTSIDE PEND: LEVER Data line 2 (lower): 40/50 Annotation 2: 8 E.X C2 SERIES Initials below graph: A.S.L THEORETICAL TABLE: COLUMN HEADERS: TYPE OF CHASSIS AND STEERING 1. LINEAR MOVEMENT OF PENDULUM LEVER BALL PIN DUE TO BAD. GEOMETRY 2. ANGULAR MOVEMENT OF STEERING WHEEL DUE TO DROP OF AXLE ON FULL REBOUND (ASSUMING SOLID S.S. TUBE) 3. MAX DEFLECTION OF S.S. TUBE SPRINGS BEFORE COMING CHOC A BLOC 4. ANGULAR MNT OF STEERING WHEEL AFTER THE SIDE STG: TUBE HAS BEEN COMPRESSED TO THE STOP 5. LOAD AT WHEEL RIM OCCASIONED BY 1.5" AXLE REBOUND. STEERING, MEASURED REVERSIBLE EFFICIENCY UNDER LIGHT LOADS 45-50 % 6. FORCE NECESSARY TO HOLD PEND LEVER STATIONARY AND ALLOW THE S.S. TUBE TO BE COMPRESSED. EFFICIENCY 45-50% TABLE DATA: Row 1: TYPE OF CHASSIS AND STEERING: 20 H.P INSIDE PENDULUM LEVER WITH F.W.B. Column 1: .575" TO REAR Column 2: 35° Column 3: .400 RATING 600 LBS/1" Column 4: 10.5° Column 5: 6.6 LBS. Column 6: 4.2 LBS. Row 2: TYPE OF CHASSIS AND STEERING: 20 H.P OUTSIDE PENDULUM LEVER WITH F.W.B. Column 1: .500" Column 2: 38° Column 3: .400 Column 4: 7.5° Column 5: 6.7 LBS. Column 6: 4.5 LBS. Row 3: TYPE OF CHASSIS AND STEERING: 40/50 OUTSIDE PENDULUM LEVER Column 1: .150" Column 2: 15° Column 3: .600 RATING 1500 LBS/1" Column 4: NIL Column 5: 2.7 LBS. Column 6: 7.9 LBS. H.E.B NOTE: NOTE THAT IN COLUMN 5 THE LOAD TRANSMITTED BY THE 20 H.P TO THE HAND IS DOUBLE THAT OF THE 40/50 IN SPITE OF THE FACT THAT THE 20 H.P S.S. SPRINGS ARE RELATIVELY 16% WEAKER AND ARE SET UP SO GIVING NO DOUBLE RATING. ACTUAL EFFECTIVE RATINGS SHEWN IN COLUMN 6 WHERE 20 H.P IS MORE THAN 40% LESS THAN THE 40/50. | ||