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 report detailing component failures on a Peregrine Bumper chassis after bump testing.
| Identifier | ExFiles\Box 119\2\ scan0364 | |
| Date | 23th September 1932 | |
| X4268 RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} C. to By E.{Mr Elliott - Chief Engineer} to E.{Mr Elliott - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Les.2/MA.23.9.32. PEREGRINE BUMPER. This chassis has now been bumped for 58 hrs. on the front and 30 hrs. on the Rear. The following failures have occurred. (1) Front road springs F.100095. (2) O.S. Front top ball end cap of shock-damper link F.100192. (3) Bijur oil feed pipe to front axle F.100074. (4) Rear end piece of radiator stay tube E.58376. (5) Outer N.S. rear shock-damper bracket to X-member F.100450. (1) 7 fractures had taken place by the end of 58 hrs. in front road springs, including both main leaves. By.{R.W. Bailey - Chief Engineer} has had a suitable radius put on the front axle packing to prevent the bottom leaves from breaking. Under the O.S. front spring there has been an additional .250 thick packing, in order to balance the weight of the side spare wheel. This packing has no radius at all. There have been no failures of the bottom leaves on the N.S where there has been a radius. The D.O. have arranged to dispense with the extra .250 packing on the O.S. as they already allow for the weight of the spare wheel in the load of the spring. Will you please arrange for 2 new spring packings to be fitted F.100355 at the very earliest as we dont want to commence bumping the new road spring until these are fitted. As all the failures have occurred at the rear of the front axle it would appear that the axle control will save the springs. As soon as there is an axle ready with axle control we should like to test it on this chassis. | ||