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).
Radiator boiling issues on Phantom models, related to the spacing between radiator tubes.
| Identifier | ExFiles\Box 24\5\ Scan192 | |
| Date | 20th August 1929 | |
| RM.{William Robotham - Chief Engineer} FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} Copy to HK{Col. T. Harker - Sales} X766. DA{Bernard Day - Chassis Design}/EVL/M20.8.29. re. BOILING ON PHANTOMS. This subject has not any direct connection with my legitimate sphere of activites, but I came across it at Sevres. As you know in Paris they are having great trouble with what customers call boiling - really water expulsion and subsequent boiling due to a clogged radiator. There seemed to be one peculiar fact which Sevres illustrated. With the old tubes the space between the tubes was approximately 2 mm., and with the new smaller tubes the space measures 1 mm. We believe the theoretical gap on the old radiators to be 1 mm., and on the new .750 mm. We should be very interested to know whether the examinations of tubes in Derby by yourself would agree. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||