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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 for a 4.50 inch D Super Low Pressure Rim.

Identifier  ExFiles\Box 159\3\  scan0047
Date  8th March 1932
  
MODIFICATIONS
.610 ALT FROM .635
.187 R DELETED
.218"
.064" ADDED
A 7 3/4" ALT FROM 7 7/16" 21/7/32 DMS
B SEE MEMO DEV. DEPT. T.D.O. 21/4/33 3/5/33
C SEE MEMO D.D.F. T.D.O. 20 3 34
D 5/8" FROM 1 1/16" 6. 35
E .083" FROM .047" 15.1.35
.610
4.500 +.003
1.312 +.031 -.000
1.000 +.006
.625 +.031 -.000
.488
.687 +.047 -.016
.156 R.{Sir Henry Royce}

.375 R.{Sir Henry Royce}
.137 R.{Sir Henry Royce}
.32 DIA. HOLE IN EACH FLANGE
DIAMETRICALLY OPP. VALVE HOLE
VALVE DEPRESSION
.187 R.{Sir Henry Royce}
17/32
35°
1/4 DIA.
.56 R.{Sir Henry Royce}
.375 R.{Sir Henry Royce}
20°
.51 R.{Sir Henry Royce}
32 R.{Sir Henry Royce}
NOTE: VALVE HOLE TO BE PIERCED ON EITHER SIDE OF WELL ACCORDING TO REQUIREMENTS OF INDIVIDUAL ORDERS.
4.50"D.{John DeLooze - Company Secretary} SUPER LOW PRESSURE RIM
M.S. STRIP. 7 WIDE X 10 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} (.128) THK.
C 01830
LIST OF TOOLS
FORMING & CIRCLING ROLLS - BO2854-65
SAWING OFF BLOCKS - STG 277 & 8
WELDING BLOCKS - STG 279 & 280
JOINT ROUNDING BLOCKS - BO2875 & 6
CONTRACTING BLOCKS - STG 276
CIRCUMFERENCE TAPES - STG 281
LIMIT GAUGES. - BO2867 & 8
MEAN GAUGES. - BO2871 & 2
STRIP GAUGE - BO2867-9
VALVE DEPRESSION TOOLS - BO2882
VALVE HOLE GAUGE - BO2882
RIM SIZE | A INS. | B MM. | C INS. | D MM.
4.50x16 | 15.97 | 50.17 | 1274.3 | 13.97 | 43.89 | 1115
C' DIA. MEAN DISC FIT
D' DIA. +/- .015 CIRC +/- .047
DUNLOP DEP
DRAWN BY
CHECKED
SUPERCEDES
DATE 8.3.32
SCALE 2"=1'
RSO158
  
  


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