Hello SAB
Well, Briggs engines in the 1950s were governed, and there
would have been an external spring.
There were no vanes because these were internally governed -
meaning a crankcase system combined with an external spring.
Later, air vane governing offered a cheaper solution to
mechanical governing. These were engines governed by
mechanical-pneumatic governing - like Briggs used.
Even later, we see the advent of pneumatic and
electronic governing.
I do not feel 'small pumps' should affect governing at all.
This must go to engine tuning.
Old Victas were not governed - if you were quick enough,
your hand acted as the governor, hitting the throttle in response.
This was imperfect.
Mechanical. pneumatic, or electric governors act more quickly than
hand throttles. The catch must be the human connection.
SAB, to answer your question, human governing has proven
slower than non-human governing used on IC engines.
Great question!
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Jack
