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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).
The testing of K.L.G. type FLS.30X spark plugs removed from a Bentley chassis.

Identifier  ExFiles\Box 162\3\  img074
Date  2nd April 1937
  
To Lp.{Mr Lappin}
c. to RM{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}
c. to HS.{Lord Ernest Hives - Chair}
c. to MX.{John H Maddocks - Chief Proving Officer}
c. to Hd.{Mr Hayward/Mr Huddy}
c. to W/K - KC.

6000

Rm{William Robotham - Chief Engineer}/Wst.1/JH.2.4.37.

Re K.L.G. type FLS.{F. Llewellyn Smith - Frames}30X Sparking Plugs removed from your Bentley chassis.

These plugs when received were immediately put into an experimental Bentley, and were run for a considerable time at slow speeds and idling speeds with the engine both hot and cold with no misfiring at all.

There were then tried out for a run at high speed and after several tests at 90 m.p.h. there was no suspicion of misfiring when the car was slowed down and accelerated.

We therefore propose fitting these plugs back*on your car for further test.

Rm{William Robotham - Chief Engineer}/Wst.
  
  


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