I have finished one wing and for the other I decided to see how much I could get done with it on the airplane and it is so much faster to do the upgrade to the wing with it on the airplane. In two days I have replaced the spar angle and riveted it back in, finished the bell crank upgrade, added the lower L angles, drilled the top skin for the l angle, and installed the rear spar upgrades all on the airplane. The only task left is to pull the wings and install the root doubler and re install the nose ribs and re skin and it is done. Trust me doing this on the table is a pain.

I have tons of video and pictures I will share in a day or two once I get it uploaded.


Views: 207

Reply to This

Replies to This Discussion

Hello Jeff,

Thanks for the post. I had the same idea. Did you prop up the wing to eliminate weight on the spar while doing the surgery?

Yes but it will hold itself up I just used them as support.


Just one question- what is your motive in jumping the gun on all of these mods? The drawings are still drafts, subject to change, and parts could also be changed. Does not seem to wise to me.

Well Fred the short answer is, Hanger space... It just happened the RV-4 we have been working on went to paint and I had the hanger for 2 weeks. Heat and tools is my motive. I also thought what the heck I might as well video tape it while I'm at it since people were calling me asking simple questions like how to remove the fuel filler neck. As you know alot of people are 2nd and 3rd owners so what is simple to us is not so clear to others.
As for the upgrades... they are pretty straight forward for the wings so I felt like that was ok to do using the draft and a couple of things didn't work but because I was doing it on a newer wing I called Zenith and let them know. We still wouldn't have known if the upgrade would or wouldn't have worked on wing lockers if I had not have done the upgrade so I am glad I could help in that respect also.


Thanks for your reply. You are right- We do need all the info and ideas-advice that we can share.
Good luck on your progress.



New from Zenith:

Zenith Planes For Sale 

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Custom Upholstery Kits for your Zenith Aircraft:

Zenith Vinyl Upholstery Kits

Zenith Apparel from EAA:

Zenair Floats

Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

Aircraft Insurance:


West Coast USA:

Pro Builder Assistance:


Transition training:

Golden Eagle Aviation

Pianosa Flying Farm

Aircraft Spruce & Specialty for all your building and pilot supplies!

© 2021   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service