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).
Proposal to modify the exhaust heating system on the New Phantom to improve circulation by rearranging pipes, thereby eliminating a valve.
| Identifier | WestWitteringFiles\N\2July1925-September1925\ Scan72 | |
| Date | 1st September 1925 | |
| R.R. 235A (100 T) (S.H. 159. 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2890 ORIGINAL TO HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} Copy to G.L. [text struck through] RECEIVED [stamped] 48230 [handwritten, struck through] 48080 [handwritten] NEW PHANTOMCodename for PHANTOM I - EXHAUST HEATING With regard to doing away with the exhaust heat on the Phantom throttle, would it be possible to get rid of the exhaust valve by re-arranging the pipes so as to give a natural draught sufficient to maintain the heat - that is - we do not mind if the circulation is rather slow with low power, because not much heat will be needed, but when we have a lot of petrol passing the circulation should be fairly vigorous. We are hoping that in the event of your preferring the exhaust heated scheme that we shall still be able to cancel the valve in the exhaust pipe by carefully arranging the pipes so as to get an ejector effect upon the exhaust, to make sufficient heat pass the throttle valve bend. R.{Sir Henry Royce} | ||