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).
Standardisation of a ballast resistance nickel wire for a chassis part.
| Identifier | ExFiles\Box 168a\5\ img023 | |
| Date | 9th September 1927 | |
| RR 78B REVISED (10M) (DE444 6-10-26) BM. X8720 COMPLETED 23.9.27 STANDARDISATION of CHASSIS PARTS. Date 9.9.27 Description of Parts: BALLAST RESISTANCE OF 39" OF 33 SWG. NICKEL WIRE IN PLACE OF 25" OF 31 SWG (STANDARD) No. 8720 Drawing No. Part List Origin: To reduce current taken by ignition circuit and assist in saving contact points. Experimental Test Report: Bench expts. have shewn that contact point results are slightly improved as a consequence of the reduction of current due to the use of the double value ballast resistance. (This is additional to the effect of finer primary coil recently standardised). Road Test Report: Run 10,000 miles on 10-G3, 11-G3 and 8-EX. These resistances caused no irregularity. high and low engine speed tests using these ballast resistances have been carried out on the road with satisfactory results. [ ] A Scrap and replace on all chassis, including chassis already delivered to Customers. [ ] B Scrap and replace on all chassis in Works. [ ] C Scrap present stock and replace on all Chassis not yet handed to test. [X] D Alteration effective on future Chassis. Use existing stock Weight of Old Part. Cost of Old Part. Weight of New Part. Cost of New Part. Difference per Car. Difference per Car. Negligible Signature from Car Dept. that above is correct. CBA 22/9/27 Cost of Parts in Works which will be scrapped if commenced on:- Series............ Series............ Series............ [STAMP: PHAN CHASSIS] INITIAL | DATE | REMARKS BJ. | 22.9.27 | Agreed. FHR. Be sure it is not too delicate to get corroded or broken. R.{Sir Henry Royce} | 12.9.27 | Agreed. WOR.{Arthur Wormald - General Works Manager} | 9.9.27 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 10.9.27 | Agreed. RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 13.9.27 | Agreed. Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 12.9.27 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 9.9.27 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 12.9.27 | Agreed. E.{Mr Elliott - Chief Engineer} PN.{Mr Northey} | | CWB. | 15.9.27 | Agreed. CWB. HS.{Lord Ernest Hives - Chair} | 9.9.27 | Agreed. Hs.{Lord Ernest Hives - Chair} | ||