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).
Programme for test bed work detailing engine component testing procedures.
| Identifier | ExFiles\Box 155\2\ scan0234 | |
| Date | 14th July 1938 | |
| To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. F.Hallam. 1315 PROGRAMME FOR TEST BED WORK. Further to Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby}14.6.38. NO.30 BED. B.III. NO.1. (a) bed. (1) Test and pass off when O.K. "mock up" of latest induction system for B.III No.5. (2) Fit Torsional Indicator shaft in crankshaft and check crank oscillations up to 4300 r.p.m. Damper should be standard poundage 12 - 15 lbs. at 1 1/2" radius. Large harmonic type of damper which fitters are now preparing, to be fitted and crank oscillations again checked. Packham is familiar with the Indicator. (3) Check power at say 3750 r.p.m. and 4000 r.p.m. (a) No water pump or thermostat. (b) Std. pump, no thermostat. (c) Std. pump with thermostat. (d) Large Vauxhall type pump with thermostat. WRAITH III NO.4 UNIT (b bed). Run 20 hrs. endurance for Attwater's camwheel. Each hour 30 mins. at 4000 rpm. 30 mins at 4250 rpm. Each 10 hours - 7 hrs. - full throttle. 2 hrs. - half " 1 hr. - quarter " Keep check on valve clearance alteration as special valves are fitted. On completion of run inspect the camwheel and check for wear and increase in backlash. If O.K. rig up pointer on | ||