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).
Table of specifications for armature windings in dynamos.
| Identifier | ExFiles\Box 3\5\ 05-page130 | |
| Date | 29th September 1919 | |
| -2- TABLE OF ARMATURE WINDINGS( DYNAMOS) Contd. Machine. C.A.V.N.G.R.R. Lucas E.575. Smith T & M.A. Bijur. Liberty. R.R.20 HP. Lucas A.S.G. Smith A & B 3A Armature dimensions. 3⅛" x 2¼" 3.575"x2.600" 3 3/16 x 3 11/16" 3.6"x2.85" 2 23/32 x 2¼" 2.750 x1.850 4.50"x 3.15" 3 1/16 x 2¼" Cop. dimensions. 1.90"x.78" 2.0 x 1.650" 2.0" x 1.0" 2.0"x.95" 1¼"x 9/16" 2.050 x .750 2.00"x.975" 1.81x1.0" Brush contact area. 1x .60"x.25" 2x .625x.30" 1x.75x.375 1x.75x.275 1 x.35 x.25 1x.75" x .5" 1x.75"x =.150 sq." = .375 sq." =.281 sq." =.206sq." =.088 sq." =.375sq." .375 Armature resistance. .46 .44 .685 .435 .404 .409 .618 Air Gap. | ||