Having owned an aircraft with a Rotax 914 (turbocharged & intercooled),
Except for the liquid cooled heads, I wouldn't thing this engine is all that
well suited for a tow plane. Not that it isn't a good engine, it's just that
it seems to require more maintenance than the less sophisticated Lycoming or
Continental. Check the Rotax SB's and AD's to see what I mean:

http://www.rotax-owner.com/

For a motor glider like the Stemme, which spends much of it's time soaring
and puts little time on the engine, this isn't so much an issue. And the
reliable starting and smooth running of the 4-stroke Rotax is a real plus.
But for a hard working tug, the maintenance demands may be less inviting.

The 912 / 914 will burn 100 LL, but they don't like it as much as premium
mogas. 100LL use can result in early overhaul due to clogged oil passageways
and sticking rings and valves.

The new diesel engines might be better suited for tug duty?

bumper
"Jeffrey Banks" wrote in message
...
John,

This PIK 27 design looks like a very good candidate for the US LSA
category.

I like the liquid cooled engine and the dive brakes on the empennage.


Jeff