Rolls-Royce Archives
         « Prev  Box Series  Next »        

Daily report on the track testing of a Paulin Bentley II vehicle at Montlhéry.


Identifier  ExFiles\Box 160\3\  scan0176
Date  10th February 1939
  
1379

To. Rm. {William Robotham - Chief Engineer}
from Rm {William Robotham - Chief Engineer} /GR. {George Ratcliffe}

Levallois.
Rm {William Robotham - Chief Engineer} /GR. {George Ratcliffe} 3/JAB.10.2.39

DAILY REPORT.

Paulin Bentley II. B-27-LE.

Montlhéry.

Smooth tread track racing tyres 6.50 x 19" fitted to rear wheels at 3.300 kgs. or 46 lbs/sq".
2nd air vent and baffle made and fitted to centre of sump louvers.

Track conditions Dry.
Barometer 763
Wind 3 to 5 meters per sec.
Air Temp. 9°c

1st Test.
Cold air to silencer. LM.8 needles.
Cut-out plate off.
Best lap speed 174.404 KPH. Oil Temp. 117°c
(6laps) 108.423 MPH. Water " 75°c

Total 16 laps. 3 Voluntary stops. Max. 3400 r.p.m.

2nd Test.
As first but with LM.9 needles. (weaker)
Best lap speed 174.404 KPH.
108.423 MPH. 2 laps.
7 laps completed.

3rd Test.
As 2nd, tyres changed for 6.00 x 19"
same type and pressures.
Best lap speed 174.404 KPH. Oil Temp 120°c
(3 laps) 108.423 MPH. Water " 76°c

8 laps completed. Max. 3500 r.p.m.

Cold air at pressure in front to be taken from centre lamp
position and carried through metal flexible pipe to front centre o
of air silencer.

Two arrangements have been made, one being funnel shape and
the other a replica of S.C.D.863 nozzle.

------------------

Rm {William Robotham - Chief Engineer} /GR. {George Ratcliffe} [Signature]
  
  
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).


Copyright Sustain 2026, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙