Aluminum spar wings

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Re: Aluminum spar wings

by mmcgrew » Sun Dec 01, 2013 10:50 am

Yes Classic. I do not know any reason they would not work. Probably alter the lower wing butt rib and maybe the size of the aileron bay. I actually used some specs from the CB1 and the Classic. The rib shapes are matches to the wood Clark airfoil.

TKS
Michael

Re: Aluminum spar wings

by oldecastleaeroworks » Sat Nov 30, 2013 11:33 pm

Hi Michael,

Just curious since this post is under the Hatz CB-1 forum. Your plane is the Hatz Classic, correct? Will your aluminum wings work with either version? I am looking forward to the Jan. Sport Aviation to learn more.

Thank you,
Bernard

Re: Aluminum spar wings

by mmcgrew » Thu Nov 28, 2013 10:08 am

Yes I have. I still have all the jigs and dies for the ribs. i could furnish the ribs and attachments. The spars can be purchased from Carlson. Check out the coming Jan edition of Sport Aviation.

Thanks

Michael

PS We have flown off the 25 hour restrictions. Very happy with finished product. The 360 carried the plane very well. Great climb and better cruise speed than I would have thought.

Re: Aluminum spar wings

by oldecastleaeroworks » Wed Nov 27, 2013 2:14 pm

Michael,

Have you given any thought to offering plans and/or kits for your aluminum wings?

Bernard

Re: Aluminum spar wings

by mmcgrew » Mon Mar 21, 2011 8:54 pm

Sorry Lorin. I just caught what you were talking about. You are right. The small holes were an after the fact add. I added them more for strength than weight.

Michael
N838MM

Re: Aluminum spar wings

by mmcgrew » Mon Mar 21, 2011 8:37 pm

Another Center Section
Attachments
Center section.JPG
Center section.JPG (18.3 KiB) Viewed 4077 times

Re: Aluminum spar wings

by mmcgrew » Mon Mar 21, 2011 8:35 pm

Another center section
Attachments
Center Section 1 painted.JPG
Center Section 1 painted.JPG (20.71 KiB) Viewed 4077 times

Re: Aluminum spar wings

by mmcgrew » Mon Mar 21, 2011 8:32 pm

PS - The lightening holes were cut when i cut the rib. I then made 2 part dies to press out the flanges.

Mike
N838MM
Attachments
Center section.JPG
Center section.JPG (18.3 KiB) Viewed 7789 times

Re: Aluminum spar wings

by mmcgrew » Mon Mar 21, 2011 8:18 pm

As a mater of fact - My center section is done, Fuel tank installed and covered in fabric. I built the center section using the same spar components as the wings and two solid ribs at each end - seperated by compression tubes. I will try to insert a pic.

Thanks
Michael
N838MM

Re: Aluminum spar wings

by ldmill » Mon Mar 21, 2011 7:20 pm

Michael,
Bet you had fun going back through and adding in all the small lightening holes in the ribs after the fact... Also - are you going to try a center section out of aluminum? I'm just finishing up a Sonex/Waiex which is all aluminum and I'm quite comfortable with that, have no experience with wood outside of minor aesthetic repairs on my Pietenpol that I bought. Just curious.

Lorin Miller
Waiex N81YX (Jab3300)
Pietenpol N30PP (Cont A-75)

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