Brake faults, including a seized toggle shaft and squeaking, with findings from an investigation on vehicle 22.G.V.
| Identifier | ExFiles\Box 101\1\ scan0271 | |
| Date | 13th May 1936 | |
| X500 a HOTEL DE FRANCE, CHATEAUROUX(French test region), Indre, France. GWH {George W. Hancock - Head Chateauroux} /3/JAB. 13th May 1936 To. From G.W.H. c to. Hs. {Lord Ernest Hives - Chair} Re. 22.G.V. BRAKES. With regard to your memo E.4/HP.9/5/36. The following is what was found on 22.G.V. during the mileage in London and the information supplied to me at Cricklewood. The O.S. rear brake toggle shaft seized and would not return to off position. The brake was rubbing and heating up. We proceeded to the Cricklewood Depot and asked them to release it. The remarks were; Why dont you do something about this ? this is the third this week. The Fitter put on this job was thoroughly conversant with the trouble and said they were having a lot of the same trouble. In fact two or three days previous, when we called in at Cricklewood, they were in a difficulty as an owner of a 25 HP. had rung up from Whitehall with rear brakes seized and they had no car available at the moment to take a Fitter down, so I proffered and took the Fitter down myself. This was due to the toggle shaft having seized. The shafts in question should be primed with oil when being fitted up. When the one was dismantled off 22.G.V. there was no sign of it having been primed, but to definately say it had not been so, is more than what one can prove. We have had sufficient experience to know that we have had no trouble with these shafts whenthey had been primed in the first instance, and the bijur supply correct. Here again is a difficult problem. An owner having trouble of this sort immediately gives the bijur pump several strokes, and oil is found in the shaft which destroys evidence. The fact remains however that water and dirt does enter thsi bearing. I do not remember having used wood plugs in these shafts. There has been complaints of too much oil. With regard to the pilot shoes, my information comes from Cricklewood, 22.G.V. rear brakes were squeaking. When dismantled by the Fitter at Cricklewood, there was no movement of the pilot shoes. It was not a case of dirt under the shoes. The Fitter remarked that he always had to reset them whencars came in for brake troubles. Our own was an example. I have no further proof. The springs do collapse with heat, but this was not the case with ours. The shoes were reset, nothing else done and the squeaks disappeared. We have just examined the front brakes on 22.G.V. which had developed a bad squeak (new axle). Two of the pilots shoes had .008" movement, the other two .010" but the spring load was much | ||
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).