Larry Dudeck's 1/12th P-166

Larry Dudeck drew his own plans up from an image of a p-166 that he found on the Internet. His aircraft is a semi-scale, 1/12scale model powered by two Graupner 6v. S400 motors. Construction time took several months.

Power supplied by two 6v S400 motors, 2.33:1 gear boxes, 8x6 props. The battery is an 8XCP1700 pack.
Final specs :AUW = 50 oz (1.418 Kg)
Net wing area = 374 DM)
Wing loading = 19.25 oz/sq.ft.(58.8 gm/DM)
No landing gear, hand launched.

Pictures of Larry's P-166.
Click on the thumbnails for a larger image

Larry sent us an update after the Aircraft's first flight:

First flight was Saturday, 3/21. Set the timer for 6 minutes, and gave the P166 a good shove into a 5 MPH breeze. The twin pushers had lots of thrust, giving the P166 a very nice rate of climb. Took it up to a comfortable altitude. A little right aileron trim plus a lot of up elevator had it flying level. Eased the throttle back to a glide. The P166 looses altitude faster than what I would like, not exactly like a brick but a glider she isn't. Put the P166 into a stall, falls off to the left, nothing dramatic.

Cruised around, left circuits, right circuits, a couple of figure 8's. Nothing daring. It looks like it might be a handful in a slow, tight turn, as when trying to line up for a landing. The lack of dihedral might make for some interesting low and slow flying. No aerobatics for a while with this one.

Timer went off at 6 minutes, lined up for a landing into the wind. The wide flat bottom allowed a nice greaser of a landing, coming to rest in about 15 feet. The pack still had some reserve, perhaps a minute or two. The wind started to pick up, decided one flight was enough for the maiden as my knees were shaking.

The CofG seems to back a bit forward, I need to move the pack back a little. Next flight I'll move the pack back about an eigth of an inch.

On the 30th of July 2005 the Piaggio Website received the following, rather sad, email from Larry:

It is with heavy heart that I must report the loss of this plane. It stalled during a low, slow turn while preparing to land. The best winds for the flying site I use are either south or southwest. The day of the crash, the winds were from the east. In retrospect, I should have made the turn at a higher speed. The plane came down, nose first. The fuse was crushed back to the wing root. The only survivors were the wing and the empanage.

I don't know if I will make another fuse or not.

Back to the P166 in scale.