An Ultrasport is just a Kaos with a turtle deck and canopy.

I'm currently working on a Tower Kaos ARF. I discovered that the new OS .55AX will not fit the included metal engine mount without some widening, while the older OS .46SF drops in there with room to spare. Since I can't get to my drum sander attachment at the moment (wife's business inventory), I'll just go with the .46SF. It should be plenty of power for the Kaos.

I am impressed with the Tower Kaos ARF, especially for the cost. With just a touch of grinding on the included metal mount, even my Fox Eagle .60, HB .61 PDP or my K&B .61 Pumper will fit in the nose with ease. I'm not up to building a battery box behind the trailing edge of the wing in the fuselage right now, which is what I would need to run one of the heavier engines. I'll just stick with the OS .46 SF for now. Or maybe even a new ASP .52 two-stroke, should I get tired of the .46 SF.


Ed Cregger