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).
Comparison of specifications for a proposed and an existing accumulator for the 40/50 HP model.
| Identifier | ExFiles\Box 58\4\ Scan049 | |
| Date | 19th February 1932 | |
| WORKS CORRESPONDENCE P+R FROM Mr. DATE 19-2-32 TO Mr. RE Rolls-Royce - 40/50 H.P. x6136 PROPOSED ACCUMULATOR. Dagenite Container without cover, 2/3-BDHL-11-A.{Mr Adams} Per Cell. 5 Positive Plates 5 5/8"W x 4 3/4" x 5/32" (plate body). 4 Negative Plates 5 5/8"W x 4 3/4" x 1/8" (plate body). INTER. 2 Negative Plates 5 5/8"W x 4 7/8" x .109" (plate body). END. Inter plate pitch - 17/32". End plate pitch to suit. Double Separation. Deposit Space - 1 1/32". Weight per 6-volt unit, charged 51 lbs. approx. Capacity 87 A.H./20 hour rate. Overall dimensions of 6-volt unit 6 3/4" x 10 5/16" x 9 5/16" H.{Arthur M. Hanbury - Head Complaints} EXISTING ACCUMULATOR. Ebonite Container, with cover, 2/3-RRN-11-A.{Mr Adams} Per Cell. 5 Positive Plates 4 31/32" x 5 5/8" x .15" (plate body). 6 Negative Plates 4 31/32" x 5 5/8" x .135" (plate body). Double Pitch- 17/32". Double Separation. Deposit Space - 1 1/4". Weight per 6-volt unit, charged - 59 lbs. approx. Capacity - 87 A.H./20 hour rate. Overall dimensions of 6-volt unit 5 7/8" x 10 5/8"L x 10 7/8"H.{Arthur M. Hanbury - Head Complaints} Form No. OS. 001. | ||