Flip Modifications

[ernie.buenafe]

I've now upgraded Flip to a Hacker B50-6S motor and Graupner CAM 16x13 prop. Flight testing showed a noticeable improvement in climb performance. Not as good as a hotliner, but good enough. I run the motor only during climbs to altitude, and fly the Flip pretty much like a hotliner. And frankly, I think it flies better this way, its true glider nature in full display.

Landing is a challenge, primarily due to the fast approach speed. Even with crow mode employed, once the plane gets within 2-3 feet of the ground, ground-effect takes over and the Flip just keeps on trucking. That could be an issue if there are any other fliers on the field. To me, that's an unsafe situation.

So...I going to try and retrofit flaps. The plan it to turn the inboard portion of the full-span ailerons into flaperons. This will give me 10" of flap. It's not much, but it should be enough to slow the Flip down some on approach. Flap servo placement will be next to the aileron servo. I've actually done something like this before with a power plane. Once I cut the proposed flap section free of the aileron, I'll have to increase the bevel angle to allow for about 60 degrees of down travel. That should be enough for flap movement.

Looks the Flip will be grounded for at least a week.

[Rocky Stone]

Nice, Ernie!

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