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).
Comparison of dimensions and weights for the U.S.A. Bosch, Rotax AT.4, and R.R. Goshawk dynamos.
| Identifier | ExFiles\Box 51\1\ Scan106 | |
| Date | 28th November 1922 | |
| X.4383 28.11.22. COMPARISON OF DIMENSIONS AND WEIGHTS OF U.S.A. BOSCH DYNAMO. ROTAX AT.4 " R.R. GOSHAWK DYNAMO. U.S.A.Bosch. Rotax AT.4. Goshawk. CARCASE. Dia. 4.975 5.00 5.00 Length. 4.70 5.00 5.00 Thickness. .325 .320 .275 ARMATURE. Dia. 3.225 2.755 3.10 Length. 2.90 3.40 2.75 Weight (lbs) 7.2 7.25 7.3 Total weight (lbs)21.1 22.1 20.8 ______ ______ ______ EFC. {E. Fowler Clarke - Electrical Engineer} | ||