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).
Bumper tests measuring the relative amplitude of movement of the radiator and engine.
| Identifier | ExFiles\Box 15\1\ Scan240 | |
| Date | 17th March 1930 | |
| I.W.J. BUMPER TESTS OF RADIATOR MOVEMENT RELATIVE AMPLITUDE OF MOVEMENT OF RADIATOR AND ENGINE. A.{Mr Adams} CAR STANDARD CONDITION, TYRES 30 LBS/D'' RADIATOR MOVEMENT. 10 WOBBLES IN 1.1 SECS. FREQUENCY 9/SEC. AMPLITUDE .310 B. CAR STANDARD CONDITION, TYRES 30 LBS/D'' ENGINE MOVEMENT. 10/SEC. .250 AMPLITUDE .250 THESE LINES INDICATE TIME IN 1/10 SECS. THESE LINES INDICATE ACTUAL RADIATOR CAP MOVEMENT. PROGRESSIVE IMPROVEMENTS MADE ON BUMP TEST. I.W.J. 1. I.W.J. STANDARD CONDITION, TYRES 40 LBS/D'' RAD. MOVEMENT AMPLITUDE .310 2. AS 1 - SCUTTLE SOLID. STANDARD BODY. AMPLITUDE .250 3. AS 2 - TUBES IN FRONT OF, & BEHIND RADIATOR AMPLITUDE .210 4. AS 3 - SIDE SPARE WHEELS ON. I.W.J. WITH BOTH XMEMBERS & SIDE SPARE WHEELS ON SCUTTLE SOLID, 40 LBS/D''. AMPLITUDE .175 5. CAR AS 1 - BUT WITH DUMBELL ON FRONT OF DUMB IRONS. DITTO PREVIOUS TEST. AMPLITUDE NEGLIGIBLE. STANDARD CAR AS 1 + DUMBELL WEIGHTS INSIDE FRAME. EFFECT OF RESTRAINING THE FRAME FROM MOVING SIDEWAYS. A^X. TEST A.{Mr Adams} CABLES ON. 30 LBS/D''. AMPLITUDE .275 TEST TO OBSERVE EFFECT OF SECURING FRONT END OF CHASSIS WITH CABLES. TYRES 30 LBS/D''. 10 WOBBLES 1.1 SECS. B^X. TEST B. CABLES OFF. 30 LBS/D''. AMPLITUDE .275 TEST TO OBSERVE EFFECT OF SECURING FRONT END OF CHASSIS WITH CABLES. TYRES 30 LBS/D'' 6.75, 4 CAMS 4 1/2 HIGH. 8 WOBBLES 8.5 SECS. MAX. AMPLITUDE ATTAINED BY ARTIFICIAL MEANS. Z. DITTO PREVIOUS TEST. AMPLITUDE .600 TYRES 60 LBS/D'' ON BUMPER. EFFECT OF VARIOUS BODY MOUNTINGS. 19 EX. TYRES 30 LBS/D'' BODY SOLID. SCUTTLE, SUBFRAME PULLED SOLID. FREQUENCY 10/SEC. AMPLITUDE .300 19 EX. TYRES 30 LBS/D'' SINGLE POINT MOUNTING AT FRONT. REAR STANDARD. FREQUENCY 9.1/SEC. AMPLITUDE .312 19 EX. TYRES 30 LBS/D'' FRONT SOLID. REAR SINGLE POINT. FREQUENCY 10/SEC. AMPLITUDE .250 19 EX. BODY FRONT ON, BUT HELD BY GRAVITY ONLY. FREQUENCY 8.9/SEC. AMPLITUDE .250 19 EX. BODY FRONT ON, BACK OFF. FREQUENCY 9.1/SEC. AMPLITUDE .190 19 EX. CHASSIS ONLY, BODY OFF. FREQUENCY 9.1/SEC. AMPLITUDE .175 BODY LIFTED OFF BY MEANS OF CRANE. BODY LIFTED OFF BY MEANS OF CRANE. BODY LIFTED OFF BY MEANS OF CRANE. STAMP: ROLLS-ROYCE, LIMITED EXPT. ROOM. 17 MAR. 1930 DERBY. | ||