Flying Characteristics

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What is the most important thing, a good IMAC plane has to be: Right, neutral. So what's the secret about that: There is no secret. Simply care about an axial wing and stab position and about the same fuselage side area above and below the wing axis. That's it. It doesn't take long to recognize, that we did our homework with our Yak 55SP. It's possibly one of the best aerobatic designs in the world. You'll need absolutely no coupling for knife-edge. Guaranteed!
	Because of the Yak's short nose, you should better use only one highest power servo (i.e. the JR 8711 or similar) for each stab. Otherwise, you could possibly get problems with the CG-position, especially if you're using tuned pipes. But there is no need for more servos: Simply add about 25 g of lead in the counterbalances, and then you are save. We've flown our prototype through the craziest maneuvers and nothing happend.
The huge fuselage makes the Yak impressive in the air. It is also the key to a very very constant and slow style of flying. You have to see it at the field or get a small impression at our product video. You really have the time to celebrate your show. The bad part: The Yak needs POWER! That's why we recommend at least a DA-150 on pipes. A 170 on cans delivers about the same amount of peak power, but more torque. Are you thinking about a 170 on pipes in your Yak? Then do it! We have a lot of experience with the DA-170 on the new Greve 170cc pipes now and it works just wonderful. Also the MTW RE3 are a great choice.
	The CARF Models Yak 55SP has a very unique wing geometry. While it's absolutely perfect for snaps, it also provides a huge wing area to make the plane floaty for crazy 3D-stuff. The Yak is always a winner!

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