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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).
Standardisation sheets, with opinions on battery size and starter motor speed for electrical starting equipment.

Identifier  WestWitteringFiles\I\July1922\  Scan36
Date  19th July 1922
  
To CJ. from H.{Arthur M. Hanbury - Head Complaints}

c. to Wor.{Arthur Wormald - General Works Manager} Hs.{Lord Ernest Hives - Chair}
c. to Hy.{Tom Haldenby - Plant Engineer} RPC.
c. to Dy.{F R Danby} Da.{Bernard Day - Chassis Design}
c. to Er.

ORIGINAL
RECEIVED 21 JUL 1922 F.C.

My dear CJ.,

X4130
X4132
X4399.

RE STANDARDISATION SHEETS.

I am sorry for the delay in replying to your note.

With reference to RPC's memo. - RPC3/T22.6.22 - most of the sheets referred to apply to electrical starting equipment, about which there is some difference of opinion.

(1) Sales I understand have been pressing for a larger battery. I do not agree that a larger battery is necessary, but I agree with an excellent quality of battery, kept in excellent order.

A larger battery is just as likely to run down as a small one, and even more likely to be neglected, and therefore I am in agreement with Da.{Bernard Day - Chassis Design} that we have no evidence that the battery is too small, but that we have much evidence that the Exide battery has been bad in construction and in practice, and in use all batteries are neglected, and do not receive the attention that they require. I am therefore distinctly against a larger battery because of the increased cost and weight.

(2) ALTERATION TO THE STARTER MOTOR TO INCREASE THE SPEED.

This has come about largely through the Americans at Springfield desiring to turn the engine at a higher speed to get it to start easier, as they have bad petrol.

I originally arranged it as at present to save the battery from an over-rush of current and to save the contacts, and to make the starting altogether less rough. We know no reason for turning the engine at a higher speed than our present
  
  


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