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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).
Weight and low-speed performance issues of an American Phantom I Chassis with a 'Newmarket' body.

Identifier  ExFiles\Box 19\3\  Scan268
Date  9th April 1930
  
x777

To Hm.{Capt. W. Hallam - Head Repairs} from Oy.
c. Rm.{William Robotham - Chief Engineer}
c. Spm. [text crossed out]
-----------------

Oy2/DM.{D. Munro}9.4.30.

Re. 404 MR. Am. P.I Chassis with "Newmarket" body.

Expl. Dept. has the weights of this car, empty with full tanks -

Front 2681 lbs. )
Rear 2870 lbs. ) This agrees closely with our standard
Total 5551 lbs. ) weights for the Newmarket type. 2700 - 2850 - 5550 lbs.

Turbulent head.
4 1/4 compression.
14/52 axle.
20 x 7 tires.

With regard to performance at low speeds, it appears to me that the joint between intake bend and manifold might bear looking at as low speed distribution does not seem good.

The carburetter setting (particularly low speed jet) does not appear correct, may be weak.

Understand it is proposed to put this car on traction dynamometer at which time the carburetter setting can well be checked.

Oy.
  
  


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