Absolutely correct. The fittings are designed for flight loads not tie down side loads.
Pete,
He was only refering to side loads from gusts while in a tied position.
There was a well know wreck to alot
of us guiding down on the peninsula in the 70's when a big blow came thru,
Involving a Cub that was a F&G airplane, at their Lava Ck camp.The pilot was aware of the bracket weakness flaw. After the storm passed he visually inspected his closely and found a tare in one backet
into the first spar hole. The outside was still holding. He made the desicion to try to fly it up to King Salmon........... Which was a poor one.
Shortly into the flight they encountered some turbulence and the wing came off that side. The cub rolled over and into a small stream inverted. I cant remember his name. If I remember correctly the rear seat passenger got out and was able to get
him out before he drowned.........
I bought an 0290D2 engine from Don Johnson that came off his Cub down
in a big blow that was tied with new 1/2" nylon ropes correctly. The ropes
held but the brackets tore out. The guides told that after the wing came off, what is left just beat itself into pieces. There many dozens of cases
of bracket failures recorded in Alaska.
Atlee also told me if I ever got caught
in a bad blow to simply chop a hole down thru your leading edge so you can tie rope right around the spars outboard of the struts........ I know this works as I had to do it one time down on the peninsula and saved my Cub. 4 miles away a friend lost his same nite!
Yep. Bracket failure. Neither of us had
a lick of insurance.
Before the "Hurricane Straps". Atlee offered his "lift strut reinforcement" for the Piper U Channel bracket. Part# 3192. And I know there are hundreds of Cubs that simply installed those years ago and I cant say, I have EVER
heard of a bracket failure, with his 3192 reinforcement either?????
He certainly knew his stuff[emoji6]
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