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).
Benefits of battery ignition over magneto ignition for the Goshawk II engine.
| Identifier | WestWitteringFiles\H\November1921\ Scan56 | |
| Date | 18th November 1934 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CJ. " " WOR.{Arthur Wormald - General Works Manager} " " PN.{Mr Northey} " " EP.{G. Eric Platford - Chief Quality Engineer} " " HM.{Capt. W. Hallam - Head Repairs} " " EFC. FILED 18 NOV 1934 ORIGINAL R7/G15/11/21. X.3455✓ X.3199 X 430 X3129 RE BATTERY OR MAGNETO IGNITION. I wrote some days ago pointing out to members of our staff, the great benefit "Goshawk II" shews of having a governed ignition (auto advance) as this engine, like all other high compression and high efficiency engines, is particularly sensitive that the point of ignitions shall be exactly timed for the speed at which it is running. This can be more easily obtained by an accurately governed battery ignition than with a magneto, which is not practical to drive through a governor. In addition to this, you will notice that in another memo of even date, I point out the advantage that the battery ignition has when starting, i.e. it is more likely to give a spark of enough potential to jump across points coated with oil or petrol, which often occur with a cold engine. R.{Sir Henry Royce} E H S2PV (200 L) (R'D' 408 28-4-14) BW STREATE | ||