Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Instruction sheet containing a table of make ratios and distribution sums for various magneto types.

Identifier  ExFiles\Box 4\5\  05-page210
Date  17th June 1921
  
RR.210.(250 Bks.) (P.173. &. Co. Ltd.) P.D.P. 18/5/20
ROLLS-ROYCE LIMITED.
INSTRUCTIONS.
To: E.F.C.
Order No: P.B.7.
Customer's No: X.430
Table of Magneto Make Ratios, Etc.
Magneto. | Type. | Make Ratio. | Distribution sum of make & break verifying | Distribution sum of make & break and switch verifying
Watford | E.6 | a) .860 | 77.5 | 78.4
" | E.O.6 | a) .960 b) .888. | 77.8 | 78.7
R.{Sir Henry Royce} Bosch | Z.R.6. | .458 | 77.0 | 77.5
USH Bosch | Z.R.6. | .850 | 83.8 | 84.6
" | B.6. | .864 | 39.6 | 40.5
" | D.U.Z.6 | .870 | 80.9 | 81.8
Conner | C.M.I | .433 | 71.8 | 72.2
B.T.H. | F.M.6 | .556 | 51.2 | 51.8
Eisemann | G.N.8. | .841 | 73.1 | 73.9
Dixie | Aero. 64 S. | .407 | 71.6 | 72.0
Signed: C.H.P.
This Sheet must be filed on completion of the work.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙