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).
Outlining design specifications for new experimental radiators and bonnets, with a recommendation to remove shutters for sports cars.
| Identifier | WestWitteringFiles\Q\April1927-June1927\ 12 | |
| Date | 7th April 1927 | |
| TO D.A.) FROM R.{Sir Henry Royce} & E.{Mr Elliott - Chief Engineer} H.S.) (At Le CanadelHenry Royce's French residence.) Copy to BJ. WOR.{Arthur Wormald - General Works Manager} R5/M7.4.27. REC'D & DESPATCHED FROM WW.11.4.27. RADIATORS. X8260 BONNETS. X8250 The new experimental radiators and bonnets to be made should be of the latest type to make the radiator with integral shutters - look as thin as possible - i.e. - (1) The neatest design, saving as much as possible - i.e. .1 minimum clearance for air coming out of the side tubes. (2) Smaller tubes, 7/6.25 mm. (3) Shorter tubes, 4 1/2" for Phantom. (4) Side plate forming tank (single side plate) acting as cooling surface. No money should be spent on high shouldered bonnets, etc. The new R.{Sir Henry Royce} bonnet catch seems to act extremely well: it however should be less expensive, and lighter. There is also the older pattern improved to permit the same way of handling the bonnet as the R.{Sir Henry Royce} pattern. I am in favour of deleting the shutters, & only making louvred and plain bonnets. Our sports car should have a plain bonnet. R.{Sir Henry Royce} | ||