The comparison using manifold pressure may not be very applicable as a
majority of 235 and 235/320's have fixed pitch props.
It would be an interesting speed test for a 235/320 (fixed pitch) and
a 320 to fly together at the same RPM with the 320 adjusting the prop to the
same manifold pressure indicated in the 235/320. Although the variable
would be what length, pitch and manufacturer the 235/320 prop has.
Gary Edwards
Say Lorn,
In your matrix (LancairCostSpec.jpg) you show speed and gph.
For these
figures, were all aircraft operated at the same rpm &
manifold pressure? Or
percent
horsepower?
Jim