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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).
Letter to Ferodo Ltd. detailing the results of bursting tests on various clutch facings.

Identifier  ExFiles\Box 129\1\  scan0256
Date  28th August 1937
  
11/0

EXPERIMENTAL DEPT.

Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}11/JH.

28th August, 1937.

Messrs. Ferodo Ltd.,
Chapel-en-le-Frith.

For the attention of Mr. Longley.

Dear Sirs,

We thank you for the opportunity afforded us yesterday of observing the bursting tests of various 13 1/2" clutch facings.

The following are notes made during our visit of June 3rd. as well as yesterday, and we would be glad to know if you agree.

FACING. CONTINUOUS RING OR SEGMENTED. R.P.M. RESULT DATE.
_________________________________________________________________
Thermoid Ring 6193 Burst June 3rd.

S.6777 Chevrion wound. Ring 5000 Outer edges flew off. " "

Ditto. Ring 5480 ditto. " "

Ferodo No.6. Ring 6240 Remained intact. " "

S.6777 Cloth obl-ique cut. Original impreg-nation. Ring. 6400 Burst. Aug. 27th.

Thermoid. Segmented. 4570 Outer edges flew off. " "
  
  


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