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 Dynamo, Rotax AT.4, and R.R. Goshawk.
| Identifier | WestWitteringFiles\J\November1922\ Scan123 | |
| Date | 28th November 1932 | |
| 28.11.32. COMPARISON OF DIMENSIONS AND WEIGHTS OF U.S.A. BOSCH DYNAMO ROTAX AT.4 R.R. GOSHAWK 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. | ||