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 measuring the relative amplitude of movement of the radiator and engine under various conditions.
| Identifier | WestWitteringFiles\U\January1930-April1930\ Scan116 | |
| Date | 14th May 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/SQ" RADIATOR MOVEMENT. FREQUENCY 9/SEC 10 WOBBLES 11.1 SECS AMPLITUDE .375 B. CAR STANDARD CONDITION, TYRES 30 LBS/SQ" ENGINE MOVEMENT. 10/SEC .250 AMPLITUDE .250 PROGRESSIVE IMPROVEMENTS MADE ON BUMP TEST. I.W.J. 1. I.W.J. STANDARD CONDITION. TYRES 40 LBS/SQ" RAD. MOVEMENT AMPLITUDE .310 2. AS 1 - SCUTTLE SOLID. FREQUENCY 9/SEC .250 AMPLITUDE .250 3. AS 2 - TUBES IN FRONT OF, & BEHIND RADIATOR. BOTH XMEMBERS ON SCUTTLE SOLID. 40 LBS/SQ" AMPLITUDE .210 4. AS 3. - SIDE SPARE WHEELS ON. I.W.J. WITH BOTH XMEMBERS & SIDE SPARE WHEELS ON SCUTTLE SOLID. 40 LBS/SQ" AMPLITUDE .175 5. CAR AS 1 - BUT WITH DUMBELL ON FRONT OF DUMB IRONS. DITTO PREVIOUS TEST. AMPLITUDE NEGLIGIBLE. DITTO PREVIOUS TEST BUT WITH DUMBELL WEIGHTS INSIDE FRAME. STANDARD XMEMBERS AMPLITUDE .275 EFFECT OF RESTRAINING THE FRAME FROM MOVING SIDEWAYS. TEST A.{Mr Adams} CABLES ON. 30 LBS/SQ" AMPLITUDE .275 TEST TO OBSERVE EFFECT OF SECURING FRONT END OF CHASSIS WITH CABLES. 10 WOBBLES 11 SECS TYRES 30 LBS/SQ" TEST B. CABLES OFF. 30 LBS/SQ" AMPLITUDE .275 TEST TO OBSERVE EFFECT OF SECURING FRONT END OF CHASSIS WITH CABLES. 8 WOBBLES 8.5 SECS TYRES 30 LBS/SQ" 6.75, 4 CAMS, 4 1/2" HIGH. MAX. AMPLITUDE ATTAINED BY ARTIFICIAL MEANS. Z. DITTO PREVIOUS TEST. AMPLITUDE .800 TYRES 60 LBS/SQ" ON BUMPER. EFFECT OF VARIOUS BODY MOUNTINGS. 19 EX. 19 EX. TYRES 30 LBS/SQ" BODY SOLID. SCUTTLE, SUBFRAME PULLED SOLID FREQUENCY 10/SEC AMPLITUDE .300 19 EX. SINGLE POINT MOUNTING AT FRONT. REAR STANDARD FREQUENCY 9.1/SEC AMPLITUDE .312 19 EX. FRONT SOLID. REAR SINGLE POINT FREQUENCY 10/SEC AMPLITUDE .250 19 EX. BODY FRONT ON, BACK ON, BUT HELD BY GRAVITY ONLY. FREQUENCY 8.9/SEC. AMPLITUDE .250 19 EX. BODY FRONT ON, BACK OFF. BODY LIFTED OFF BY MEANS OF CRANE. FREQUENCY 9.1/SEC. AMPLITUDE .190 19 EX. CHASSIS ONLY, BODY OFF BODY LIFTED OFF BY MEANS OF CRANE. FREQUENCY 9.1/SEC. AMPLITUDE .175 Handwritten notes: Dots indicate time in 1/10 secs Lines indicate actual radiator cap movement. Stamp: ROLLS-ROYCE, LIMITED CH. ENG'S ROOM DERBY. | ||