I am going to install my LA 65 in a U Can Do 60 and try props like 13x5  13x4 and see what it can do.<div>
</div><div>Fuel - 15% made it come alive in my other plane.</div><div>
</div><div> Needle valve - Its hard to tell lean from rich.</div><div>
</div><div> Another thing.-  No engine can be rated without trying a hand full of props first.       For example - A real twin engine plane dead stick will fall out the sky if the props did not feather. And my U Can Do will not hover if I try a 8 pitch prop. I need to find a low gear for this plane .</div><div>   A prop in a dive will brake. ( Half throttle or Idle same speed in a dive.) A lot of guys do not even think about this.</div><div>
</div><div>Also a 13" prop is as long as you can go with this engine . Because the tips of your prop can not brake the speed of sound. </div><div>
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