Hoppy wrote:

Bryan wrote:


2-stroke engines can be just as if not more reliable than 4-strokes. Look
at the big rigs on the road, a very large number of them are 2-stroke
engines pulling very heavy loads for hundreds of thousands of miles.


Yeah, 2-stroke diesels. Valves, not ported cylinder walls. Pressure lubrication,
not diluted oil/fuel mist.

2-stroke gassers with big cylinders seize a lot, they just do. Except the Rotax
in a CH-7, don't know why that worked out so well, when a Mini-500 with the same
engine is crap.


Almost all the CH-7 helicopters were built and test flown by the
factory, not the customers. There are less than 100 CH-7's while there
are over 500 Mini-500.


Dennis Fetters