RE: Hangar 9 Pulse XT 40
I've been flying my Pulse with the OS 70 Surpass II (4 Stroke) with an APC 14-7 prop on it, since about end of September now...I LOVE this plane and engine combo.
Inverted mount, so the top of the cylinder head pokes out the bottom, and it looks awesome. The integrity of the cowl on the top of the plane keeps the lines clean and the head out the bottom keeps alot of airflow across the head.