In a subsequent video, the engine failure guy (friend of Trent) owns up to the fact that he built an uprated 912, but he "used an 80 horsepower crank" because he didn't have time to put the higher rated crankshaft into it. Less a damnation of an engine type than an admission that some experimental guys just screw up. Check out his discussion of the cause of the failure at time 1:20 here: https://youtu.be/j7uMgxXwfmY
The washout makes the root of the wing stall first, thus preserving roll control as the stall announces itself, since the tips will have nice regular attached flow and the ailerons/flaperons will act normally in that area. My gut feel is that the flaperons will have the same control with or without tip extensions, so leave the washout as it is.
Allen, I think you can get off the ground at 5500 rpm (with a 582 set up for 6500 rpm max). You can easily maintain level flight at 5500 rpm or less, so I bet if you hold the aircraft on the ground in a level attitude, tail up, and wait to about 50 mph at 5500 rpm you can unstick and slowly climb.
Thanks my bad. .016" would be strong enough. Has a working strength of easily 300 lbs per strip, ultimate of maybe 900 lbs, and your butt is resting on several strips at once. My bad. That seat would weigh perhaps twice what a high strength ripstop nylon would weigh, but its not out of sight. OK,. I give in!
Guys, aluminum weighs 1.81 oz per cubic inch. 1/16" thick aluminum 1" wide therefore weighs about 4 oz per linear yard. Nylon webbing weighs .71 oz per yard, so aluminum weighs 6 times more than nylon. Tell me again how light it is.
The best rule is to judge the verticality of the TW pivot axis, the closer to pure vertical the better, since if the angle is slanted, as the TW turns it has to pick up the airplane's tail a bit, which hampers ground maneuverability. It looks good to me. I doubled the spring on mine and found it barely fit inside the channel, so I clamped the two springs together to prevent the extra spring from popping out.
1avidflyer, That was a cheap shot. 99.99% of FAA folks are on our side, and virtually all my dealings with them have been great. But that quote was told to me by a friend, a GS-14 FAA specialist! When I swapped engines, gear and prop, the FSDO guy said just log it into Phase 1, stay within the limits, and log it back out after 5 hours. No inspection, no heartache.