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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).
Outsourcing, costs, and procurement of the Wraith radiator bottom tank and matrix unit.

Identifier  ExFiles\Box 9\3\  03-page090
Date  19th February 1938
  
To RHC.{R. H. Coverley - Production Engineer} from Rm{William Robotham - Chief Engineer}/Std.
c. Roy.{Sir Henry Royce}
c. Hs.{Lord Ernest Hives - Chair}
c. By.{R.W. Bailey - Chief Engineer}

Rm{William Robotham - Chief Engineer}/Std.2/MH.{M. Huckerby}19.2.38.

640

WRAITH RADIATOR BOTTOM TANK AND
MATRIX UNIT.

We understand that the Operations and Planning dept. have decided not to make the above bottom tank EW.1620 in this works, but to buy same outside. We have obtained cost figures from G/Rb.{R. Bowen} on the basis of buying the tank from Messrs. Halladays and fixing support clips with bolts to it in this works. The nett figure so obtained is 4/- per tank with a tool cost for the tank pressing of £53.0.0d. If the tank is also fitted with the outlet pipe EW.1632 and cap EB.3626 sweated in position, the nett figure is then 5/-.

We shall shortly (two-three days) have corresponding quotations from Messrs. Marstons and know that their approx. figure for the tank complete less outlet pipe will be 4/- - 4/6d. Since Messrs. Marstons will be supplying the matrix and side plates and dip soldering the bottom tank to the matrix, it seems logical to let them make the bottom tank as well since their figure is competitive. This will also apply for B.lll and B.30 and will save tool cost since they will use combined tools.

We therefore recommend that the matrix EW.1161 fitted with side plates EW.1178, bottom tank EW.1620, and support brackets EW.1617/8 with fixing bolts KB303/7 welded to brackets should be ordered as a complete unit from Messrs. Marstons immediately.

Messrs. Marstons are also quoting for supplying and fitting the outlet pipe EW.1632 and cap EB.3626 but their figure for this is likely to be higher than the figure of 1/- given by G/Rb.{R. Bowen} It is logical therefore from a cost point of view, that we fit these pieces when the unit is received at these works.

As regards the testing of the core, the scheme for dropping the pressure testing altogether willstill apply
  
  


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