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).
Ignition system components, including contact materials and distributor design.
| Identifier | ExFiles\Box 54\5\ Scan294 | |
| Date | 4th February 1927 guessed | |
| (2) Oscilloscope should shew if we bounce more than Delco or Bosch. Tungsten might like a little scrub on making as would appear to be the case with Delco. It would rub the contact (not good for platinum) and damp the rebound. Off-set would appear to meet the cam during break and follow it during make. What percentage would this be? A diagram of motion like a valve is necessary. Disc rotor on distributor seems quite a good and easy improvement but should be tested for value, but can do no harm. R. {Sir Henry Royce} | ||