ORIGINAL: wright2u
I have a 82 inch Cap 232, powered by a Moki 180 and when I perform a loop it will pitch upward and will not complete the loop, also when landing and I throttle down on approch the plane will pitch upward. (WHY???)[
]
There is a trimming process you should go through, you can find it on the NSRCA website. It includes a test for engine downthrust. If you're flying along at half throttle, trimmed for straight & level flight, and dropping the throttle causes a pitch up... you have too much down thrust. That is, when you remove the down thrust by cutting the throttle, you find you've put in a lot of up elevator trim to keep the plane flying straight & level under power.
My Midwest Cap / Moki 180, makes huge loops. Or tight ones. Yours will too, once you sort out the trim issues and resolve any engine / prop issues. Start with that downthrust test, and go through the rest of the trim procedure.
Good luck,
Dave Olson