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 issues and modifications on brakes, jacks, bodywork, exhaust, and radiator systems.
| Identifier | ExFiles\Box 82\3\ scan0267 | |
| Date | 11th May 1935 guessed | |
| ( 9 ) A slight leak of oil shows at the joint of the N.S.Axle tube to the box. 15) MORE FRICTION ON THE SWINGING ARM TO IMPROVE BRAKE THUMPS. Up to the present mileage, the setting of the swinging arm has not been consistent owing to the various break-downs. It should be possible to obtain results during the further mileage. 16) SMITH'S JACKALL JACKS. The bracket of the N.S. Jack on the front Axle was broken during one of the brake shudders, and rendered useless. The O.S. was taken off. The steering of the car was not affected with the Jacks on or off. The rear Jacks have been satisfactory in use and no defects noticed. 17) IMPROVED FRONTAL APPEARANCE WITH CENTRALISED WING AND RADIATOR MOUNTING. The Radiator and front wings have rode very steady. There has been no sign of wing flap. We are of the opinion that possibly, the breaking up of the Body is due to the stresses being set up which otherwise, would not be there with the stiffening up of the frame via the front wings. The front wings are showing by cracking that they are being twisted near the dashboard. We are not enamoured with the frontal appearance of the car. 18) LIGHTENED & SIMPLIFIED EXHAUST SYSTEM There was a noticeable exhaust boom. The snout noise was more exhausty. The straight through pipe from the manifold to first silencer burnt and scaled, finally breaking at the bend. The first silencer failed. The front and rear of the silencer cracked. The venturi baffle inside broke off by the venturi. The system is not as yet satisfactory. It was found necessary to fit an extra stay to the front silencer, to prevent the dropping of the frontal exhaust pipe. The rubber mounting of the engine with its movement caused trouble with the cut-out blowing. This was overcome by fitting the stay & with steadying the engine movement. 19) SMALLER RADIATOR MATRIX. We have had no over-heating with the smaller radiator matrix with the present atmosphere temperatures and no fan. Tests are to be taken covering up the side bonnet louvers, also on steep gradients. We lost on an average, half a gallon of water each run during the first part of the mileage. The cause was found to be due to the swirl of the water from the inlet, in the top tank hitting the centre tube for the controls of the shutters which diverted the water upwards into the filler cap. /........... | ||