Today, I did an engine tear down after the first hr accumulated running with the new compound side housing.

The runs were about 7 to 8 min each. This is the time it takes the engine on the test stand to heat up to max temperature, which was over 200F on water and oil.

 

There was never a leak of water or oil during the tests.

 

As the inspection indicated, the O-Ring seal around the bearing area was as it was when installed. The clamping of the cast iron insert did not show any movements.

 

It looks like the compound side housing with the floating insert periphery is going to work.

 

Next is fixing the test stand for running the engine with gear box and propeller for max power testing. At the same time, I will incorporate ancilliary items, such as ignition, exhaust, fuel system, cooling and motor mount.

 

Richard Sohn
N2071U

Richard,

Very good outcome - will you give the weight difference between the cast iron and the composite housing.

George (down under)

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