rgb wrote in message ...

Some folks seems to be pretty please with there Rotax 912S so I was
thinking those 2 new engines might give Lycoming and Continental a
little challenge, maybe not ...
For what I can see thoses good old Lycomings are quiet good, but kindof
expensive .

Liquid cooling looks like it'll make it difficult to retrofit to
existing designs. I wouldn't be surprised to see a company like
Diamond modify one of their designs for it.

How they can run a 10.8 to 1 compression ratio on 87 octane gas is a
neat trick. I'm sure temp stabilization from liquid cooling helps,
but that still seems like a very high ratio for the low octane fuel.

John Galban=====N4BQ (PA28-180)