RE: Just got the Phoenix Super Decathlon
I rechecked my CG and it is about 95 mm back from the leading age. It isn't tail heavy, needs very little pressure, forward on the stick inverted, so I think I will leave it right there. I did put a remote glow connection on the plane also. It is soooo much easier to attach the glow igniter on the side of the plane, than at an angle from the bottom, with the inverted engine. Remember, I put a 1100 NiMH, 5 cell pack and both the elevator and rudder servos in the rear of the plane to get the CG, where it is now, with the .91 Magnum. This engine weighs 23.5 ounces. If I was buying a new four stroke for it, I would go with the new Saito .82 or .91, since they weigh much less than the Magnums and OS's.
This plane should rock on a Magnum .52 two-stroke or OS .50 SX two-stroke and would be much easier to balance with either of these engines. The SD just sounds so much better with the smokin' four stroke in it. I plan to buddy box my grandson with it in the next couple of weekends. This thing is definitely NOT a trainer or even a second airplane, but as far as scale aerobatics, it ain't too shaby!!
Happy Landings,
Mike Boyd