On 1-Jan-2004, "Ron Natalie" wrote:

I have about twenty hours behind a 912 and two forced landings already.
It sure would be nice not depending on a single powerplant.
Are two 40 hp engines unable to do the work of a 80hp?

The question is will the aircraft fly on one 40HP engine when it really
requires 80HP. Most ultralights don't have much excess power.
The second engine, as they say, takes you to the scene of the crash.


This is particularly true if the propellers cannot be feathered. The drag
of a windmilling prop driving a dead engine is enough to bring down even
high performance twins.
--
-Elliott Drucker