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).
Modification to prevent regulator resistance unit burn-outs on all chassis, including required parts lists.
| Identifier | ExFiles\Box 166\2\ img092 | |
| Date | 10th June 1937 | |
| report issued .6092. To HPS{Horace Percy Smith - Experimental Factory Mgr} c. Rm{William Robotham - Chief Engineer}/Wst. BY/RD.6/B.10.6.37. REGULATOR RESISTANCE UNIT BURN-OUTS. All Chassis - RR.Sch.896. Please receive herewith details made from the above scheme which provides a fuse and additional resistance wire, so that should the regulator stick, a burn-out will not occur. The new parts required are :- D.76038 - Support. 1 off. D.76039 - Support. 1 off. D.76040 - Bobbin. 1 off. D.76041 - Fuse. 1 off. D.76042 - Pillar. 1 off. In addition, we shall require :- 21 Ft. of S.W.G. Wiggins "Brightray" Glowray D.C.C. Bare Oxidised Resistance Wire. KB.1311A - Bolt. 2 off. K.4304A - Nut. 6 off. K.4405A - Washer. 2 off. K.9005A - Washer. 1 off. DB.{Donald Bastow - Suspensions}689 - Stud. 1 off. Please have a unit built up in accordance with LOP. D.54562, Standard Cutout and Resistance Unit, substituting the new parts for the following standard pieces which will not be required. D.100452 - Support. 2 off. D.100453 - Stud. 2 off. D.100454 - Bobbin. 1 off. D.1687 - Nut. 4 off. K.1802A - Screw. 2 off. D.1395 - Plain Washer. 2 off. 26 S.W.G. "Eureka" Res: Wire - 17 1/2 Ft. (Cont'd) ..... | ||