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).
Letter from a supplier detailing the specifications for road springs.
| Identifier | ExFiles\Box 154\2\ scan0136 | |
| Date | 30th August 1938 | |
| 1305 Spry File HWP/10/38. Spring Dept., Tinsley. 30th.August.1938. Messrs.Rolls-Royce Limited., Nightingale Road, DERBY. Dear Sirs, With regard to our conversation to-day on the telephone with Mr.Whitfield, we submit hereon as requested particulars of the plate thicknesses and lengths of 1000.lbs Road Springs to your Drawing F.B.3851. Plate Nos. Thickness Inches Finished. Lengths Inches. 1. .26. M.P. 50 + 2 eyes. 2. .26. 48.3/4. 3. .26. 42.3/8. 4. .26. 36. 5. .26. 30. 6. .25. 24.1/8. 7. .25. 17.1/2. 8. .25. 11. Total. 2.05. Mainplate Ground, other plates Concave Buffed. Note. So far we have supplied to you only springs of 1000.lbs loading to this Drawing F.B.3851. Yours faithfully, THOS.FIRTH & JOHN BROWN LIMITED. | ||