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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).
Report comparing the electrical installation and faults on experimental cars 1.EX and 6.EX.

Identifier  ExFiles\Box 36\4\  scan 121
Date  25th August 1920
  
x 3014b
R11/G25.8.20.

To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce}
Copy to CJ.
" Wor.{Arthur Wormald - General Works Manager}
" Da.{Bernard Day - Chassis Design}
" By.{R.W. Bailey - Chief Engineer} X.3763b.
" EFC. X.3923b.
" RP. X.298.

RE ELECTRICAL INSTALLATION. 1.EX COMPARED WITH 6.EX. X.2515.

X.3014h
X.3770.

The smith dynamo on 6.EX was definitely noticed to give a large current and an earlier charging current, but 1.EX was not bad when it was in working condition, but on this particular journey the charging current on 1.EX failed, which Hs.{Lord Ernest Hives - Chair} reports due to the cutout not working satisfactorily (probably corroded contact.)

As regards 6.EX this also failed to give a charging current, and it was found that one of the fuses was blown. This fuse was replaced, and the charging went on well for a time, after which it failed again. A second fuse was found to be blown. This was replaced, but no further charge could be obtained from the dynamo. On return to West WitteringHenry Royce's home town this was taken down and the armature was found to have overheated and melted the solder on the com. bands and armature bands.

X.3659.
X.3555.
X.3444.

On this car the wiring is very much neater, and makes the engine look far neater under the bonnet. Owing, however, to the long scuttle, it is impossible for a man slightly above the average dimensions to reach the distributor board, and it would appear that it might be better to locate the distributor board under the bonnet, as suggested by Mr. Day, and at one side near where the ballast resistance is

Contd.
  
  


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