"C J Campbell" wrote in message
...

"Tom Sixkiller" wrote in message
...

"C J Campbell" wrote in message
...
I think Deakin is worth reading, but some of what he says should be
taken
with a grain of salt. His columns are mostly based on experiments with
his
own highly modified Bonanza, a few high performance radial engines,
and
some
theory. In fact, a careful reading of his columns will show no test
data
for
the most common engine and propeller combinations in use today.

You've not read hiscolumns about the test beds they've run at GAMI?

I merely point out that his theories are controversial -- they are hardly
universally accepted, as even this thread amply demonstrates.

Ah...no, you said he doesn't support his conclusions. Charles "Cory" Scott
actually did a very elaborate reply that explains it better than I have the
patience for.

As I said, I
think he has a point, but I have to consider that the engine manufacturers
and aircraft manufacturers might know at least as much about their
products
as GAMI does.

You might want to look into that, because the test stand data shows they may
not know as much as they pretend. Sounds more to me like the manufacturers
are trying to cover their asses for poor quality and potential legal
liability.

Have you looked at the data that Cory and I pointed you to?