Test report comparing performance, weight, and component specifications for vehicles GMD-20 and 20-G-IV.
| Identifier | ExFiles\Box 102\1\ scan0252 | |
| Date | 1st February 1935 | |
| -2- Hs {Lord Ernest Hives - Chair} /GR. {George Ratcliffe} 12/KW.1.2.35. (4) GMD-20. Carburetter LeC.4292 off 20-G-IV fitted as in test (2). 13.0 M.P.G./45.3 M.P.H./71 miles. -------------------- GMD-20. Total weight complete T. 1 cwts. 19 qrs. 3 lbs. 21 20-G-IV. " " 1 16 1 14 Difference - - 3 2 7 -------------------- (5) 20-G-IV. Loaded to equal GMD-20 (1 - 19 - 3 - 21). Carburetter LeC.4292 replaced as in Test (2) - 15.2 M.P.G./45.45 M.P.H./75 miles. -------------------- GMD-20. Axle ratio 11 x 50. Tyres 6" x 19". 20-G-IV. " " 12 x 50. Tyres 6" x 18". Hs {Lord Ernest Hives - Chair} /G.Ratcliffe. | ||
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).