04-01-2020, 10:40 AM
Charles ,
For interest , John Sutton did some tests on the standard A7 pump many years ago , mainly to confirm that it was not an inferior
piece of engineering unsuitable for anything other than a standard spit and hope engine.
Using SAE 40 oil, approx. 0.6 litres / 1000rpm / minute was delivered , approx. 3 litres at 5000rpm - John's figures.
I don't know what an oversized pump delivers , say 25% more , and with more than adequate pressure .
Good enough for my dashes up Harewood , Barbon , Prescott etc.,
Geoff
For interest , John Sutton did some tests on the standard A7 pump many years ago , mainly to confirm that it was not an inferior
piece of engineering unsuitable for anything other than a standard spit and hope engine.
Using SAE 40 oil, approx. 0.6 litres / 1000rpm / minute was delivered , approx. 3 litres at 5000rpm - John's figures.
I don't know what an oversized pump delivers , say 25% more , and with more than adequate pressure .
Good enough for my dashes up Harewood , Barbon , Prescott etc.,
Geoff