rmh

I assembled my H9,33% CAP with 1/4" 20 steel bolts into steel T nuts in the wing - I don't like this setup -but was cutting corners timewise--- I have same setup on my 330 --but have hard rubber washers -not the plastic washers I used this time .

Anyway ------- first flight - 5 minutes in - 200 ft up - one panel slides out about 6"
Instant flat spin.
I was really caught off guard-my spotter said -the panel came out!
I shut off the engine
He said hold full up -which is where I was --
The plane stayed in a slow flat spin -landed in 1' tall pasture grass.
Total damage one gear leg bent back hard --the in cowl exhaust caught in the damp morning soil-dirt. which cracked three of the engine stand off triangular braces and one cowl mount - That and one whel pant - that's all -
will be flying tomorrow.
The part which surprised m was that the loose panel held position - .
I picked up the plane and simply slid it from the tube .
So - no more steel to steel retainer setups -which I never put on my own planes and will never do it again.
Back to bolts into maple blocks or my capture bolt setup -

Ronbo

My Feedback: (12)

wow, im just using 1/4 20 nylon bolts threaded into each wing panel with a block on inside of wing...

how many flights on the cap?

rmh

your setup is actually better than the steel to steel setup -
occasionally, run some CA into the block and let it cure -just to keep the nylon bolt fitting nicely

Spartan Missile

Hi Dick Hanson,
Sorry about your wing panel coming loose. []

This is a bit of a worry, I'm just finishing off a H9 33% Su-31 which uses the same wing retaining method.

I was thinking of using a large 1" to 1&1/2" washer and split spring washer. I might try to drill a hole through the 1/4" cap head and secure it with wire, to stop it unscrewing with vibration.

What do you think and what is your capture bolt setup please ?

The last thing I need is for the wings to come off on the Su-31's maiden flight [:@]

Thanks.

JohnVH

My Feedback: (38)

My h9cap had the stock setup with screws into the wing tube. Worked awesome, My sukhoi is still stock setup, with nylon bolts into wing root, works fine too..

Jemo

My Feedback: (5)

Dick,
I have used your capture system several times since first seeing it on your web site. It's fantastic. I even use it on the bottom two cowl fasteners on my Carden Extra, works great, no reaching down in tight places for the screws.

stomper

My Feedback: (20)

Here you go >
Hope you don't mind Dick.

Spartan Missile

Thanks stomper, a picture is worth a thousand words.

Ryans Rebel

My Feedback: (12)

1000 words?!?!?! I'm getting about three of it. "what is that"

Not seeing something I guess. How does it work?

Ryan

deputydog

I'm using the standard nylon bolt on my 33% extra and they have not moved at all! Sorry to hear about the landing Dick. Glad to hear damage is minimal!