Hi,

Question for everybody on aluminium material replacement.

My plan for CH640 Fuselage required "L" longeron made from 6061-T6, 0.093 thickhness (3/4" x 3/4"), but my local provided is back order on this material.

He propose me 1 x 1 x .125 thickh, but in 6063-T3 alu. Could I replace it by this one ? or other any other material like 2024-T4 could be use (in same or other thickness).

What are my alternatives ?

Christian Tremblay

CH640 scratch build from plan

Views: 173

Reply to This

Replies to This Discussion

this site might give you the info you are looking for. 

https://www.thomasnet.com/articles/metals-metal-products/6061-alumi...

"The bearing yield strength is a measure of how a material will respond in joining arrangements; think when two metal plates are joined by a screw drilled through both plates. The bearing yield strength is the maximum amount of stress that will not cause this hole-joint to fail (stretch/crack) when the plates are pulled/pushed, and is a useful measure in applications such as in scaffolding where this arrangement is common. Again, 6061 is more often chosen for these applications as it has a much higher bearing strength over 6063 aluminum (386 MPa vs. 276 MPa)."

Tks Russell for referenced articles.

I will kept them in my reference builder documentation. Now I can choose alu alternative for replacement of extrusion if needed.

Christian

I don't know where Zenith buys is 0.093 3/4" equal L.  But it's not very common.

6061-T6 0.125 3/4" equal L is much easier to find.  The standard length for both of these extrusions is 25 feet.

tks Timothy for information.

I will try find it in this lenght, economy of longeron splice with 8 bolts installation for 4 joints.

Christian

do not use 6063 as it is an arcitectural grade and not suitable (it can be identified by a sharp inside corner where as the structural grades will have a radius on the inside corner). The .093 shown in the plans is propreitary to Zenith  at least here in the US. The common substitute is 3/4 x 3/4 .125 thick 6061-T6 and is commonly available. in the US it is less than $20 a length 

Tks Dan for Information.

Christian

Not doubting you, but it appears(IME) that the L that zenith uses has a sharp inside corner. The 601HD that I dismantled had a sharp inside corner. The plans(601HD and 650B) also show a longeron with a sharp corner. Not sure if this changed on the newer models, I have not ordered those parts for my 650B.

RSS

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