"Jim Stewart" wrote

It can run at 5800 rpm, but it depends on your
prop pitch. My CTSW never exceeds 5100-5200 on
full throttle climbout and cruises just wonderfully
at 90-95 knots and 4200 rpm or so.

It just sounds wrong to me, to hear an engine running a sustained 5800 RPM. I
do want to go 120 knots though, so if that means it has to run 5800 RPM, it is a
big turn-off for me.

You know how sometimes people have a hang-up, for no good reason, but there is a
reason?

That is me and Rotax.

We had a SeaDoo that had a rotax (I forgot now) I think around 600 cc engine.
It was a piece of crap, from start to end. You fix one thing, and there was
another problem. Lots of money flushed down into that hole in the water.

Ended up getting a new short block. Ran it for about a year, with some
improvement in reliability, but not much. I got it running fairly good and sold
it. I told the new buyers about its questionable reliability (so I could sleep
nights), but they still wanted it. It was a deal.

Now, I KNOW that the 912 is a completely different beast than that 586 (or
whatever) 2 stroke, but I can never imagine getting into a plane with an engine
that is made by the same company. Not logical, but just the same, my mind is
over ruling my brain! or something like that
--
Jim in NC