> To my somewhat limited knowledge of variable pitch props,
> you may also need to monitor the engine manifold pressure
> to keep the engine operating optimally

Mr X is not concerned with manifold pressure. Armed with
the list's "instant knowledge" I was able to talk to him a little
more confidently than I would have otherwise. As he's in the
aviation industry he's aware of all the rules/regs/howtos and
does not require a system that uses anything other than the
prop speed (engine revs). That's not to say he's right, been
caught by so-called experts before now, but he seems to
know what he's talking about and for the time being I've no
reason or facts to persuade him otherwise. My aim initially
is to give him exactly what he's asking for. If (when) he's happy
with that then maybe there'll be more to follow

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