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).
Comparison of calculated and observed average current values showing the effect of make-ratio variation for a standard tall coil and distributor.
| Identifier | ExFiles\Box 54\5\ Scan266 | |
| Date | 22th May 1924 | |
| X.3485 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.Y.B. Order No. W.A. 33 22-5-1924 Customer's No. X 3485 Figures obtained by calculation and observation showing the effect of variation of make-ratio on Average Current using R.R. Standard Tall coil and Standard distributor TABLE: MAKE RATIO. | CALCULATED AVERAGE CURRENT | OBSERVED AVERAGE CURRENT. .1 | .051 AMPERES | .050 AMPERES | .0505 .2 | .186 " | .191 " | .193 .3 | .379 " | .378 " | .382 .4 | .618 " | .612 " | .618 .5 | .870 " | .861 " | .870 .6 | 1.150 " | 1.074 " | 1.085 .7 | 1.430 " | 1.289 " | 1.302 .8 | 1.730 " | 1.515 " | 1.531 .9 | 2.030 " | 1.724 " | 1.742 1.0 | 2.340 " | 2.340 " | 2.34 Signed: H.E.W. This Sheet must be filed on completion of the work. | ||