Hangar Flying

Hangar Flying => Hangar Flying => Topic started by: mattstecher on September 30, 2013, 08:14:44 PM

Title: VEZ elevator rebuild - torque tube corrosion protection
Post by: mattstecher on September 30, 2013, 08:14:44 PM

Rebuilding a Varieze and the elevators were about a pound overweight (both sides) and about a degree past the balance limit so I am rebuilding them.

I have demolished the elevators down to bare torque tubes (and kept the hardware hoping to re-use) and am wondering what is the best way to add corrosion protection.

Canard Pusher Newsletter #66 recommends Alodine for new elevator builds, but I have found that unless the aluminum is completely clean Alodine does not penetrate well. Not to mention that its difficult to apply unless you can use a bath.

So I am wondering if I can use Zinc Phosphate instead?

Any and all advice is appreciated.

Fly and build safe,
Matt Stecher
VEZ N54EG

Title: Re: VEZ elevator rebuild - torque tube corrosion protection
Post by: genecockrell on October 03, 2013, 07:50:16 PM

You can use zinc chromate in a spray can, its effective, cheap, and easy to apply... Its not highly resistant to scratches. I would wash the tube with conversion coating first, then rinse with water per directions.
Other option is to go get a can of self etching primer and spray this on... This stuff may be avaliable at an auto parts store or else at a paint and body supply store... It is usually about 14-16 a can