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).
Issues and modifications for Bijour pipes, exhaust systems, pedal rattles, and jacks on various car models.
| Identifier | ExFiles\Box 135\2\ scan0213 | |
| Date | 14th August 1940 | |
| - 8 - On B.22.AW. the rear spring shackle Bijour pipe was found broken. With the protective cover fitted, this is too close a job, as the coil of the pipe is pushed hard on to the moving end of the shackle. This has been shown to Rm{William Robotham - Chief Engineer}/HH and a modified scheme is being prepared. Two Bijour pipes to the pivots of 9-B-V have also been broken, but this had been due to the coils having been fitted the wrong way round, no action will therefore be taken. On 4-B-50 the Superflexit Bijoru pipe to the off-side pivot has broken. As these pipes have been superceded by coil pipes, no action will be taken. EXHAUST SYSTEMS. The lightened type twin exhaust system weighing 72 lbs has been fitted to 11-B-V, and appears satisfactory. In this system, the rear boxes have been shortened 6", and we consider the standard of noise acceptable to Bentley cars. Similar short boxes on 4-B-50 also appear satisfactory. These shortened boxes make for very much easier fitting and incidentally removes the rear end of the box from close proximity to the rear seat cushion. Complaints have been received that 33-G-VII and 4-B-50 when they had long rear boxes gave cause for complaint by passengers, of heat between the rear cushion. As Rm{William Robotham - Chief Engineer}/HH is drawing out the twin exhaust system as fitted to 11-B-V and 33-G-VII, we have suggested to him as a compromise that the rear boxes should shortened by 3" from standard practice. This will enable the boxes to be fitted clear of the rear cushion, and will give us a standard of exhaust quietness acceptable both to Bentley and Rolls-Royce cars. We have also asked that the two tail pipes should be brought out of the back of the car side by side, instead of the scheme drawn by By/McStay, showing one tail pipe on each side of the car. PEDAL RATTLE. Rattles from pedals reported on 33-G-VII, car, were found to be coming from the rather complicated noise insulation scheme. A more simple scheme was fitted on 11-B-V using rubber as the insulating bush. The rubber however causes a stricture of the pedal, and we recommend that a pad of thick felt should be used. A mock-up scheme will be tried on one of our cars as soon as we have time to make it. JACKS. We are not too happy about the jacking system. With the hydraulic jack operated from the rear end of the rear spring, it is impossible to remove the wheel on 10-B-V after it has been | ||