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).
Experimental comparison of a Remy 6 volt 6 cylinder coil against a standard R.R. coil, detailing performance with varying cable lengths.
| Identifier | ExFiles\Box 52\3\ Scan353 | |
| Date | 22th August 1923 | |
| -2- Contd. is arrested, when cable length is about 20 feet. The curve for the Remy 6 volt 6 cyl. coil is somewhat similar to that for the standard R.R. coil, and is shown thus --- . --- on the squared paper attached. In carrying out the above experiments the contact breaker speed was constant at 500 R.P.M., the "running" current for the R.R. coil being 1.05 amperes and for the Remy 1.21-1.23 amperes. The single platinum point gap was used (as previously described). The H.T. cable had a core of aluminium flex (30/30) and the diameter over insulation was .265". When using the longer cable lengths, it was somewhat difficult to obtain a definite figure for the maximum gap which would just allow of even sparking. The results given are the mean of several readings. The maximum gaps for even sparking when the shorter lengths of cable were used, were fairly definite. R.C.S.J. | ||