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Slow running, performance, acceleration, and hill climb tests for a GAE-20 30 HP engine.


Identifier  ExFiles\Box 164\5\  img286
Date  1st June 1937
  
COPY. RM {William Robotham - Chief Engineer} /RC {R. Childs} 6013
To Rm. {William Robotham - Chief Engineer}
c. Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell}
Rm {William Robotham - Chief Engineer} /GR. {George Ratcliffe} 5/JH.1.6.37.

GAE-20 30 H.P. Slow running tests.

Standard distributor head and rotor fitted.
Contacts checked O.K. at .018" gap.
Timing checked and reset at 13° B.T.D.C., F.A.
Tappets checked cold reset .004" and .006".
6 M.P.H. at 13° B.T.D.C. fairly even.
5" at T.D.C. appreciably more even.
Noticeable improvement at T.D.C. idling light.

Performance & acceleration tests.

Standard at 13° B.T.D.C., F.A. | New governor at T.D.C., F.A.
-----------------------------------|----------------------------------
M.P.H. Seconds. | Seconds.
5 - 20 7.1 | 7.0
5 - 30 11.5 | 11.4
10 - 40 13.7 | 13.6
10 - 50 19.7 | 19.6
10 - 60 27.4 | 27.9
10 - 70 41.8 | 43.0

15.5.37. Weather good. | 16.5.37. Rough wind.

Ticknall hill climb.
1st. gate 49.5 secs. 55 M.P.H.,S.R. | 49.4 secs. 55 M.P.H., S.R.
Finish 60.0 secs. 60 M.P.H.,S.R. | 59.7 secs. 60 M.P.H., S.R.
  
  
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).


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