Looking at the MkII manual it states that:
'Maximum diving speed is 450 mph, A.S.I.'
With a constant speed airscrew:
'At maximum rpm, 3,000, the throttle must be a 1/3 open.'
'The pitch control need not be brought back to reduce rpm, the range of pitch is enough to hold down the rpm at any airspeed.'
On climbing it states:
'The aeroplane may be climbed for periods of 30 mins at a boost pressure of +9 lb./sq.in. and 2,850 rpm. In this condition the best climbing speed is 160 mph. A.S.I. up to the rated altitude (13,000 ft.).'
For normal climbing:
'Ground level to 13,000 ft - 185 mph. A.S.I.'
15,000 ft - 180 mph A.S.I.
20,000 ft - 160 mph ''
25.000 ft - 140 mph ''
30,000 ft - 125 mph ''
35,000 ft - 110 mph ''
It also states:
'Watch the radiator and oil temperatures, and adjust as necessary.'
Max radiator temp 120'C
Max oil inlet temp 90'C
With other airscrews:
With the ROTOL 35º constant-speed airscrew, the R.P.M. will remain constant in the dive
within governor limits (1,700-3,600 R.P.M.). However with the WATTS OR WEYBRIDGE fixed-pitch or
de HAVILLAND TWO-POSITION airscrews, R.P.M. limits can be reached and exceeded rather quickly.
When the TWO-POSITION airscrew is installed, the plunger control must be set fully forward in the
COARSE position.
When the ROTOL 35º CONSTANT-SPEED airscrew is installed the airscrew control
should be set back in the POSITIVE COARSE position before starting the dive to prevent the
airscrew from jamming in fine pitch.
The minimum R.P.M. permissible at maximum Boost is:
Mk I - 2080 R.P.M.
Mk II - 2270 R.P.M.
All intersting stuff