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).
Test results for bearing pins bolted through hangers and various front spring top plates.
| Identifier | ExFiles\Box 119\2\ scan0061 | |
| Date | 13th February 1914 | |
| Piece No | Description | Time | Results | X No | Reference 4 Bearing Pins bolted thro Hangers E3316/4 | Orme Evans Standard 22" Radn & 2" bumps | 4 - 10 | Offside Brkt E3314 broke close to flange | X1315 | W.or/Hy{Tom Haldenby - Plant Engineer}9/B.10.Y/14 " | " | 5 - 10 | Nr side Brkt E3316 broke close to flange | " | " " | " | " | Slight leak in Radtr 4 1/2" from offside, 3/4" from bottom at front only. | " | " " | " | 7 - 40 | Offside Brkt E3316 broke close to flange. Radtr leaks 1 1/8" from offside, 6 1/2" from bottom at front. | " | " " | " | 8 - 12 | Nr side Brkt E3316 broke close to flange. Radiator leaks 1 1/4" from nrside, 3/4" from bottom at front, also 2 1/4" from nrside, 3/4" from bottom at front. | " | " Frnt Springs Top plates having 3" bumps & offset solid eyes (Krupps steel by RR Ltd) Top plates .287 thick. hardened & tempered at 850°c & 480°c & | 4 - 20 | Nrside top plate broke 4" from front eye | X888 | W.or/Hy{Tom Haldenby - Plant Engineer}3/B.13.Y/14 " | 8 - 50 | Offside top plate broke 1 1/8" from front eye | " | " Frnt Springs top plates having solid 1/2" + 3" bumps & offset eyes (Le Personne steel by RR Ltd). Top plates were .279 thick hardened in water at 950°c. & tempered at 400°c. | 1 - 30 | Offside top plate broke 7/8" from rear eye. (3" bumps) | X888 | W.or/Hy{Tom Haldenby - Plant Engineer}2/B.13.Y/14 " | 9 - 10 | (2" bumps) | " | " " | 6 - 30 | nr.side top plate broke 5 1/2" from rear eye | " | " " | 1 - 25 | (3" bumps) (2" bumps) | " | " | ||