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).
The excessively strong springs and a noisy gearbox bearing on the Goshawk 11.
| Identifier | WestWitteringFiles\G\September1921\ Scan78 | |
| Date | 20th September 1921 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c.c. to CJ. c.c. to E.{Mr Elliott - Chief Engineer} c.c. to Da.{Bernard Day - Chassis Design} c.c. to EY. c.c. to Wor.{Arthur Wormald - General Works Manager} c.c. to EP.{G. Eric Platford - Chief Quality Engineer} ORIGINAL X4247 (crossed out) X4261 (crossed out) X4262 GOSHAWK 11. X4219 The springs which were fitted to Goshawk 11. when it was at W.W. were 1070 lbs. on the rear and 630 lbs. on the front. We have a pair of 1300 lbs. rear springs but these are hopelessly too strong. In our opinion 1100 lbs. springs will be about the heaviest required for Goshawk 11. For a car with a light open body like our experimental chassis, we require rear springs 800 to 850 lbs. EY. has put on order some springs so that the springing of the car can be judged properly. We anticipate receiving these springs in about a fortnight. Gear Box. X.4247. We have tested all the ball bearings in the gear box and find that they are reasonably quiet. There is one which we are doubtful of. We proved, however, that the Hyatt roller bearing caused a considerable noise. We feel most probably this will prove to be the cause of one of the noises which was troubling us. To prove this we are fitting a plain bush in place of the roller bearing. We have checked over the alignment of the engine and gear box and also all the parts which could have any affect on the top gear working out. We have not been able to find any reason for this. The second unit which we have been running about on the car, does not have this fault. Hs.{Lord Ernest Hives - Chair} | ||