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).
Blueprint showing the results of bumper tests on radiator and engine movement under various conditions.
| Identifier | ExFiles\Box 17\4\ Scan001 | |
| Date | 17th May 1930 | |
| I.W.J. BUMPER TESTS OF RADIATOR MOVEMENT. RELATIVE AMPLITUDE OF MOVEMENT OF RADIATOR AND ENGINE. A: CAR STANDARD CONDITION, TYRES 30 LBS/SQ" RADIATOR MOVEMENT. Waveform notes: 10 WOBBLES 11 SECS. AMPLITUDE .375. RAD. MOVEMENT AT CAP. B: CAR STANDARD CONDITION, TYRES 30 LBS/SQ" ENGINE MOVEMENT. Waveform notes: 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/SQ" RAD. MOVEMENT Waveform notes: AMPLITUDE .310 2) AS 1 - SCUTTLE SOLID. I.W.J. SCUTTLE SOLID. STANDARD Waveform notes: AMPLITUDE .250 3) AS 2 - TUBES IN FRONT OF, & BEHIND RADIATOR. I.W.J. WITH BOTH XMEMBERS & SIDE SPARE WHEELS ON. SCUTTLE SOLID. 40 LBS/SQ" Waveform notes: AMPLITUDE .210 4) AS 3 - SIDE SPARE WHEELS ON. I.W.J. WITH BOTH XMEMBERS & SIDE SPARE WHEELS ON Waveform notes: AMPLITUDE NEGLIGIBLE. 5) CAR AS 1 - BUT WITH DUMBELL ON FRONT OF DUMB IRONS. DITTO PREVIOUS TEST. Waveform notes: AMPLITUDE .275 STANDARD + DUMBELL WEIGHTS INSIDE FRAME. EFFECT OF RESTRAINING THE FRAME FROM MOVING SIDEWAYS. A x: TEST A.{Mr Adams} CABLES IN. 30 LBS/SQ" Waveform notes: AMPLITUDE .275 Side text: TEST TO OBSERVE EFFECT OF SECURING FRONT END OF CHASSIS WITH CABLES. TYRES 30 LBS/SQ" 10 WOBBLES 11 SECS. B x: TEST B. CABLES OFF. 30 LBS/SQ" Waveform notes: AMPLITUDE .275 Side text: TEST TO OBSERVE EFFECT OF SECURING FRONT END OF CHASSIS WITH CABLES. TYRES 30 LBS/SQ" 6.75, 4 CAMS, 4 1/2" HIGH. 8 WOBBLES 8.5 SECS. MAX. AMPLITUDE ATTAINED BY ARTIFICIAL MEANS. Z: DITTO PREVIOUS TEST. Waveform notes: AMPLITUDE "800" Side text: TYRES 60 LBS/SQ" ON BUMPER EFFECT OF VARIOUS BODY MOUNTINGS. 19 Ex. TYRES 30 LBS/SQ" BODY SOLID. SCUTTLE, SUBFRAME PULLED SOLID. 19 Ex. Waveform notes: FREQUENCY 10/SEC AMPLITUDE .300 TYRES 30 LBS/SQ". 19 Ex. SINGLE POINT MOUNTING AT FRONT. REAR STANDARD Waveform notes: FREQUENCY 9.1/SEC AMPLITUDE .312 TYRES 30 LBS/SQ". 19 Ex. FRONT SOLID REAR SINGLE POINT Waveform notes: FREQUENCY 10/SEC. AMPLITUDE .250 19 Ex. BODY FRONT ON, BUT HELD BY GRAVITY ONLY Waveform notes: FREQUENCY 8.9/SEC. AMPLITUDE .250. 19 Ex. BODY FRONT ON, BUT BACK OFF Waveform notes: BODY LIFTED OFF BY MEANS OF CRANE. 19 Ex. CHASSIS ONLY, BODY OFF Waveform notes: FREQUENCY 9.1/SEC AMPLITUDE .175. BODY LIFTED OFF BY MEANS OF CRANE. 19 Ex. Waveform notes: BODY LIFTED OFF BY MEANS OF CRANE. Stamp: ROLLS-ROYCE LIMITED, EXPTL DEPT., 17 MAY 1930, DERBY. | ||