Make sure that you have at least three times the outlet area than the inlet areal. I also recommend that you block off the two holes on both sides of the spinner, so you are not allowing excess air into the cowl area that will not be flowing directly across the head portion of the engine, with the inverted set up.

I tried to maiden mine on Saturday at the Randolf Auxiliary Field (paved runway) in Sequin, Texas. When I taxied out and started to take off the plane suddenly started to turn violently to the left. When I picked it up, the plastic wheel hub had broken. A trip to the LHS and I had two new Sullivan Skylites in hand. Next attempt, weather permitting will be without wheel pants, since I will fly primarily off grass, I bought 2.75" wheels. Aso, as previously mentioned, the weak stock tail gear bent quite a ways, so also purchased a Ohio tail gear at the LHS (Second Chance Hobbies) to replace it. I don't care for the Sullivans, even though they are cheaper and lighter, as they only last about 4-5 months on the rough grass surfaces we fly on. Never has an Ohio gear failed on me yet, replaced plenty of wheels on them, but it is definitely worth the $17 purchase price.

Next weekend's weather is definitely forecast for typical March wind and rain (I hope). So don't know when I will be able to test/trim fly and report on the performance. the engine is running great and acts like it will definitely over power the plane. I set up a throttle curve, while I had it out, so it should behave well in flight.

Good luck to everyone else.
Mike Boyd