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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).
Data table of 'Buick' valve contours, showing inlet and exhaust measurements against camshaft degrees.

Identifier  ExFiles\Box 124\3\  scan0008
Date  28th October 1918
  
ROLLS-ROYCE LIMITED.
INSTRUCTIONS.
RR 6 (500 T) (SF 121. 28.10.18) MP 197597
X3317

To___________________________
Order No._________________ Customer's No._____________

"Buick" Valve Contours
no clearance in Tappets

Degrees on Camshaft

IN.
0 .969
5 .969
10 .969
15 .964
20 .944
25 .916
30 .878
35 .8375
40 .797
45 .758
50 .738
55 .711
60 .701
65 .706
70 .718
75 .739
80 .764
85 .800
90 .845
95 .897
100 .922
105 .949
110 .963
115 .968
120 .969
125 .969
130 .969
135 .969
140 .969

EX.
0 .928
5 .928
10 .926
15 .908
20 .886
25 .857
30 .811
35 .764
40 .729
45 .700
50 .676
55 .662
60 .658
65 .6585
70 .658
75 .658
80 .659
85 .668
90 .685
95 .708
100 .747
105 .785
110 .830
115 .871
120 .902
125 .928
130 .929
135 .929
140 .929
145 .929
150 .929

Signed_____________________
This Sheet must be filed on completion of the work.
  
  


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