On Fri, 28 Nov 2008 14:39:46 -0500, wrote:

Some of the first ultralights DID run chainsaw motors - just like the
go-cart crowd. Some of the small aircooled outboard engines were also
used - and some early snowmobiles also used a converted aircooled
outboard. (horizontal twin Johnson Snow Cruiser and OMC)

True. The first ultralights used either a McCulloch 101 (a target
drone engine) or the Chrysler-West Bend engines of about 9HP (from a
two man chainsaw, I believe). However, the snowmobile engines (Cuyuna
and then Rotax) quickly supplanted them.

-Dana

--
People in cars cause accidents. Accidents in cars cause people.