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).
Comparison of original and latest type side steering tube buffer springs and their ratings.
| Identifier | WestWitteringFiles\P\2July1926-September1926\ Scan065 | |
| Date | 20th August 1926 guessed | |
| contd :- -3- (b) Original type side steering tube F.53260. Rear buffer spring F.51864. Rating 376 lbs/ins. Normal load 75.28 lbs. Front buffer spring F.51863. Rating 1153 lbs/ins. Normal load 75 lbs. Load on ball = 150.28 lbs. This arrgt. was schemed when front springs were fixed at the front with springs anchored at the rear. These springs are constrained to their normal length as max. and cannot follow the ball end up. (c) Latest type side steering tube N.Sch.2067. Equal buffer springs F.53918. Rating 1100 lbs/ins. Normal load 110 lbs. Load on ball = 220 lbs. This steering has been tested by Hm.{Capt. W. Hallam - Head Repairs} and EP.{G. Eric Platford - Chief Quality Engineer} who state it to be a big improvement over standard. It has now been running on 11-G-111 for 2100 miles and has, so far, given no trouble. Hs{Lord Ernest Hives - Chair}/A.J.Lidsey. | ||