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).
Thermostat-operated radiator shutters for a 20 HP car.
| Identifier | ExFiles\Box 39\4\ Scan070 | |
| Date | 14th May 1924 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} √3499 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} EP.{G. Eric Platford - Chief Quality Engineer} PN.{Mr Northey} OY. Expl. No. OBJECT OF TEST. Thermostat Operated Radiator Shutters, 20 HP Car TESTER. Seyl Warwick CONDITIONS. SUMMARY OF TEST. Two cars have been fitted with the above arrangement viz:- 5 G II (cfr. Royce's Goshawk), & 6 G II the latter having since run 15,360 miles over a period of 7 months. Three different sylphon tubes have been tried of varying contracting temperatures, & that which is recommended shows a temperature on the instrument board of from 77°C to 80°C.. In an atmosphere of 15°C. the shutters will maintain an open position, when running ordinarily, of from 45° to 50°, zero being closed & the maximum opening movement 70°. A glance at Tests 3 & 4 will show that there is a difference in temperatures recorded between the position of the sylphon thermostat & that occupied by the thermometer on Instrument board, i.e. in cylinder head, & the engine speed also affects this. No troubles have been experienced or reported. Details of Tests attached. | ||