jimboflying
MEMBER
What items are normally checked or replaced when doing a wing recover?
normally??
or what I do?
- all steel parts removed sent for blasting, inspection, powder coating
- all hardware removed is replaced
- wing measured & trammed
- ribs replaced as needed
- hanger blocks replaced or repaired as needed
- new leading edge from Univair blanks since it's already removed(and is less time/$$ then cleaning and bondoing old junk..
- maybe replace trailing edge if bad shape...
- maybe prime leading and trailing edge to help prevent corrosion..
- hang and align flaps and ailerons with wing in proper twisted position
- replace tip wood bow
- replace lighting wires
- add Atlee Hurricane tie downs if not already installed
- extend top leading edge back 14"~ if wanted..
thats the pre fabric 2 minute thoughts...
If you can get the leading edge extension approved, do it! It's worth it's weight in platinum!
Why?
Glenn
I like it for sweeping wings. The area where metal is added is where snow gets crusty and stubborn. It's the place where the ribs are the most vulnerable to damage from a broom. It's also the place on the plane where I have the most leverage and the least control of my broom. I appreciate the added reinforcement.
Here's a good old thread that discussed wing covering. It's worth the read.
http://www.supercub.org/forum/showthread.php?23767-Bad-Fabric-Scallopson-Wing-Help
I did several mods to mine plus VGs at the same time so it was hard to say what helped the most but lift was better. The changes caused the tail to not be as effective as it used to be. I then added the VGs to the stabilizer which helped.
.
Watched your cub come out of the north pothole Lake Hood last Friday. Hands down one of the best performing cubs on floats I have seen. Great job Ed!
Mark
Steve,
Thanks for the followup. If I have new Univair leading edges would I leave those reinforcements out?
Jim
The aileron hangers had an external reinforcement on the outside of the trailing edge as well as the internal side. The flap hangers which were added at a later time to add flaps did not have the external reinforcements. Do they also need external reinforcements? This is on an experimental PA12.
Mike,
Thanks for the help as usual. Where would I get the external ones for the flaps?
I had forgotten that old thread and especially the part about the fabric not shrinking equally.
I checked the polyfiber manual which was last revised a year after the posting and they basically said the same thing about the scollops in the fabric. They suggested the medium weight if you don't want to see them and advised that using the heavy weight fabric with the blanket method would produce scollops.
Their recommendation was that if you wanted to use the heavy wt. then to consider an envelope which would run the fabric cord wise.
I have a set of wings that are ready to cover and I think that I'm going to do a bit of sewing.... (Well maybe the wife will)
I never liked seeing the seams in the wing fabric but.... Oh well. Piper did some of the worst ones. Ive seen as many as 5 splices on one wing; with some only a couple feet apart, and running cockeyed. Piper didn't waste any fabric.