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).
New and previous performance curves for dynamos.
| Identifier | WestWitteringFiles\M\2April1925-June1925\ Scan102 | |
| Date | 28th May 1925 | |
| R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. 8660 REF: EFCL/T28.5.25. To R & E.{Mr Elliott - Chief Engineer} from EFC. c. CJ. & PN.{Mr Northey} c. By.{R.W. Bailey - Chief Engineer} Da.{Bernard Day - Chassis Design} c. EP.{G. Eric Platford - Chief Quality Engineer} Rg.{Mr Rowledge} Wor.{Arthur Wormald - General Works Manager} ORIGINAL ++ RE DYNAMOS. X4610 We now issue curves attached labelled N, O and P respectively, principally for the purpose of giving the up-to-date representative output curve of the EAC. dynamo with 57 coil armature, but there are contained on these sheets for comparison the previous representative curves which have been issued on the EAC. 29 coil armature, the 20 HP. 57 coil armature, and the 20 HP. 29/coil armature, together also with the specified outputs in the cases of the two chassis. Sheet N exhibits the curves on a dynamo r.p.m. base, but a base of EAC. chassis m.p.h. with 15/52 axle and 33" tyre dia. is also given. On sheet O the curves are given on a common m.p.h. base with the usual axle ratios and tyre diameters, and dynamo speed bases for the two cases are also given, but in the case of this sheet of curves, those for the 29 coil armature are omitted, so that a direct comparison against m.p.h. for the two chassis, together with specified outputs, is available. A third set of curves labelled P refers solely to the EAC. chassis and is a representative up-to-date set of curves for that chassis. Contd. | ||