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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).
Maintenance of silencers, noting they do not get choked except on old 30HP cars.

Identifier  ExFiles\Box 38\4\  Scan132
Date  2nd January 1925
  
To E.{Mr Elliott - Chief Engineer} from Hm.{Capt. W. Hallam - Head Repairs}
G.{Mr Griffiths - Chief Accountant / Mr Gnapp} to OJ.
C. to Hs.{Lord Ernest Hives - Chair}

X3642

Hm{Capt. W. Hallam - Head Repairs}4/W2.1.25.

Re Silencers.

In reply to E2/M31.12.24, with the exception of the old 30HP. cars our experience is that the Silencers do not get choked.

We do not include an operation when overhauling cars for cleaning Silencers, as it is not now found to be necessary.

When we have had choked Silencers on the abovementioned old cars our method for clearing them was to make a drill with a long shank, and open out the holes.

[Handwritten initial] Hm.{Capt. W. Hallam - Head Repairs}
  
  


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