Gee whiz Dauber...

I did read your post.

Note that the Four-Star's come in (3) sizes....40, 60 and 120.

Therein lies the answer to your question.

Here in the computer age...information is SO easy to get.

Irvine .72? Probably a fine choice. As would be any decent 60-75 sized 2C engine or perhaps up to a .91 Four stroke.

You can go larger of course, but then the model turns into a home sick manhole cover at low power.

I am plenty familiar with this plane. A Saito .80 for example does a fine job with it.



'Race