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).
Design specifications and maintenance requirements for car batteries, with handwritten annotations.
| Identifier | WestWitteringFiles\R\January1928-March1928\ 155 | |
| Date | 23th March 1928 | |
| DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} } FROM R.{Sir Henry Royce} EFC. } (At Le CanadelHenry Royce's French residence.) HS.{Lord Ernest Hives - Chair} } [Strikethrough] C - to BI WOR{Arthur Wormald - General Works Manager} PN{Mr Northey} [Strikethrough] BY.{R.W. Bailey - Chief Engineer} GWB. C. [Strikethrough] EP.{G. Eric Platford - Chief Quality Engineer} SC. [Stamp]: ORIGINAL Z R1/M23.3.28. REC'D.{John DeLooze - Company Secretary} & DESPATCHED FROM WW. 27.3.28. CAR BATTERIES. [Handwritten]: X7535 [Handwritten]: X664 These must be very conveniently accessible without detaching any electrical connections or moving the battery in any way. [Handwritten]: Agreed We ought to be able to take the acid density with the standard apparatus supplied by the battery makers for that purpose, and fill up with a very small jug, or other easily obtainable utensil. [Handwritten]: Agreed I have not sufficient experience to say how often the battery should be examined for filling up, but one might guess every 500 or 1000 miles, or once or twice a month according to the distance run, or other circumstances. [Handwritten]: Twice a month. We should more glaringly point out that where-ever there is trouble of too little charge, a very small charging current should be run through the battery [Handwritten]: If it can be while the car is in the garage. Under some circumstances there is no other way of meeting the difficulty, because a bigger dynamo will charge the battery too quickly, and some- times too much, resulting in destruction. [Handwritten]: But we have auto - switch. R.{Sir Henry Royce} [Stamp, partially legible]: REC'D ... MAY ... | ||