"Morgans" wrote in message
...

"Charlie" wrote

If 40 hp will do it, the new 'industrial' engines are looking really good
at this point. I follow an email list that focuses on small 4stroke
engines for a/c, & most of the discussion lately has been about these
engines. One guy is converting a vertical shaft lawn tractor motor (~32
hp).

These engines aren't at the 40 hp level yet, but it's easy to see bigger
ones coming out in the future. The nice thing about an industrial engine
is the output shaft & bearing is usually designed to take the horrendous
side loads of a reduction drive, so an a/c reduction or prop bending load
shouldn't be too much of a problem, and they are designed for continuous
output, not intermittent or varying load like most engines.

The biggest drawback these engines seem to have is weight. The current
offerings in a two cylinder and about 25 to 30 HP go about 100 pounds,
right?
--
Jim in NC

Or more, in the catalogs that I have seen. :-(

Peter