The widening of the Goshawk frame and track to accommodate 4-wheel brakes.
| Identifier | ExFiles\Box 104\3\ scan0001 | |
| Date | 25th June 1924 | |
| To CJ. from R. {Sir Henry Royce} c. to BJ. PN. {Mr Northey} C. c. to H. {Arthur M. Hanbury - Head Complaints} BA. HS. {Lord Ernest Hives - Chair} c. to BY. {R.W. Bailey - Chief Engineer} X5380 R6/M25. 6. 24. RE. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) FRAME AND WIDENING OF TRACK. X. 5380 X. 4565 X. 5940 In fitting 4-wheel brakes to this chassis it is intended to widen the track 2", partly on account of the 4-wheel brakes, and partly to provide sufficient clearance for semi-balloon tyres. This then becomes the usual large car standard of 56". The rear end and main portion of the frame width can be 1" wider than at present. R. {Sir Henry Royce} | ||
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).