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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).
Parts and drawings for the B.80 Marine Unit.

Identifier  ExFiles\Box 133\3\  scan0218
Date  19th June 1940
  
1128

To Rm.{William Robotham - Chief Engineer}
c.c. to Rm{William Robotham - Chief Engineer}/HH.

Jnr.{Charles L. Jenner}3/JH.19.6.40.

B.80 Marine Unit.

We have already sent to you the induction pipe; in order to complete the section we send you herewith PL.241 which is a copy drawing of the Solex updraught carburetter. Also PL.216 Flame Arrester. With regard to the mesh of the arrester this will be decided when I have seen the Amal traveller. In the meantime we can go ahead with detailing the larger square size shown on the drawing.

Herewith PL.251 flywheel and rear end of engine. This deals with the modified floating oil intake and the supply of high pressure oil from the crankshaft to the Parsons reverse box. Please note that at the aft end of the sump the B.80 oil splash tray will be fitted but not the forward one.

PL.237 sheets 1 and 2 Top and Bottom halves of reverse box. The arrangement is that Parsons will supply all the internals, bearings, clutch bands, operating mechanism and we shall make only the casing.

PL.197 Dip stick herewith. The electrical floating oil level gauge will not be fitted.

PL.247 Sandwich piece also herewith.

On the sandwich piece we have mounted the Lucas coils. Inside the sandwich piece there is a trough arranged to pick up oil which drains off the reverse mechanism and returns it to the crankcase.

The starter motor is C.A.V. 12 volt type SC.126. This is the only machine we can find which gives enough torque for starting the 8 cylinder engine with a small flywheel ring. The size of the ring has been determined by the floor line of the installation.

The above drawings release for detailing all the long distance pattern work.

Jnr.{Charles L. Jenner}

2 copies of memo. to Rm.{William Robotham - Chief Engineer}
Original of PL.241.PL.216. PL.251. PL.237. PL.197. PL.247 to Rm{William Robotham - Chief Engineer}/HH.
1 print for Clan.
1 print for file.
  
  


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