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).
Testing, failure, and return of front springs for a 20 HP Chassis destined for India.
| Identifier | ExFiles\Box 106\1\ scan0012 | |
| Date | 2nd April 1925 | |
| By from Wd.{Mr Wood/Mr Whitehead} c.to Hs.{Lord Ernest Hives - Chair} c.to CC/Dn. X5410 1440 50 Wd{Mr Wood/Mr Whitehead}/NJ2.4.25. 20 HP. Chassis - India. Front Springs. I sent Messrs. Thos. Firth & Sons a copy of Hs{Lord Ernest Hives - Chair}/RB{R. Bowen}/ LG23.3.25 (received with yours By/HM{Capt. W. Hallam - Head Repairs}11/W30.3.25) and in accordance with the second paragraph of By/7/H19.3.25, I offered to return to Firths the 5 front springs referred to which have been tested out on our bumping rig. I drew their attention particularly to the fact that the life of the springs varied from 10.4 to 19.12 hours, the average life being 14 3/4 hours, as compared with 14 1/2 hours life of the usual spring. I also drew their attention to the fact that the top or main plate fractured in each case and that the top plates of two springs were of different thicknesses to the other three. Also, that the top plate of one of the springs has a considerably higher Brinell hardness than the remainder. We are now in receipt of a letter from Firths, dated 1st inst. acknowledging receipt of the report and adding that as they wish to go thoroughly into the matter with Mr. Stansfield, they would like to have the 5 springs returned to enable a close examination to be made. I will hand By/HM.{Capt. W. Hallam - Head Repairs} 5 labels to attach to the springs and shall be glad if you will arrange that same are handed to Dn. as quickly as possible. Wd.{Mr Wood/Mr Whitehead} | ||