Rolls-Royce Archives
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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).
Blueprint graph of representative dynamo output curves against R.P.M. and chassis M.P.H.

Identifier  ExFiles\Box 165\6\  img004
Date  27th May 1925
  
AMPERE OUTPUT.
Old schedule of volts

REPRESENTATIVE OUTPUT CURVES OF
R.R. 20 H.P. & E.A.C. DYNAMOS TOGETHER WITH
SPECIFIED PERFORMANCES.
(CARCASE TEMPERATURE 75° C.)

CURVE LABELS:
REPRESENTATIVE 40/50 H.P.
REPRESENTATIVE 20 H.P. (57)
E.A.C. (57) OUTPUT
20 H.P. (57) OUTPUT
SPECIFIED PERFORMANCE

Y-AXIS (AMPERE OUTPUT):
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

X-AXIS LABELS:
20 H.P. (57)
E.A.C. (57)
E.A.C. (33.5" TYRES) & 20 H.P. (31.4" TYRES) CHASSIS M.P.H.
15/52 AXLE
11/50 AXLE
E.A.C. DYNAMO R.P.M.
20 H.P. DYNAMO R.P.M.

X-AXIS SCALE 1 (E.A.C. DYNAMO R.P.M.):
0, 280, 560, 840, 1120, 1400, 1680, 1960, 2240, 2520, 2800, 3080, 3360, 3640, 3915, 4200, 4475, 4750, 5030, 5320, 5600

X-AXIS SCALE 2 (20 H.P. DYNAMO R.P.M.):
0, 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400, 2600, 2800, 3000, 3200, 3400, 3600, 3800, 4000

X-AXIS SCALE 3 (CHASSIS M.P.H.):
0, 10, 20, 30, 40, 50, 60, 70

STAMP: DERBY WORKS COPY

OTHER: Q
  
  


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