New 1940 BC65 Restoration.

[Taylorman]

Re: New 1940 BC65 Restoration.

I have a call into him, will let you know

Jerry,

What does your IA say about this?

[Pearson]

Re: New 1940 BC65 Restoration.

Jerry,

What does your IA say about this?

[Taylorman]

Re: New 1940 BC65 Restoration.

The tail could be up to 5". AC43 says twice the spacing of the prop wash area for tail surfaces.

That is what the Poly Fiber manual states as well, if not known use twice the spacing of the prop wash. The vertical fin was already done when I bough the project and it has a 4" spacing on it.
Anybody else wants to shime in?

Thanks

[3Dreaming]

Re: New 1940 BC65 Restoration.

I use 2.5"....never have to worry about it that way,lol. Seriously, if you go by the regs it would be 2.5" on the vertical(factory used 3.5 I think???), 2.5 of the left horizonal and left elevator, and 3" or 3.5" on the right horizonal & elevator....The wings are another story if you have truss rib wings. Like I said at first, I seriously always use 2.5" on everything so I never have to worry about it....its a little more stitching but not as much as you would ever really notice.

The tail could be up to 5". AC43 says twice the spacing of the prop wash area for tail surfaces.

[crispy critter]

Re: New 1940 BC65 Restoration.

I use 2.5"....never have to worry about it that way,lol. Seriously, if you go by the regs it would be 2.5" on the vertical(factory used 3.5 I think???), 2.5 of the left horizonal and left elevator, and 3" or 3.5" on the right horizonal & elevator....The wings are another story if you have truss rib wings. Like I said at first, I seriously always use 2.5" on everything so I never have to worry about it....its a little more stitching but not as much as you would ever really notice.

[VanDy]

Re: New 1940 BC65 Restoration.

straight from FAA.gov you have to download each chapter individually, but its all there.

http://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.information/documentid/99861

[Pearson]

Re: New 1940 BC65 Restoration.

Jerry,

In my copy of AC43.13 there is a graph on page 2-21 that shows the spacing based on Vne speed. But before the graph it says to use manufacturer's spacing, if it can be determined. If not, then use the graph. I interpret it as 3.5" outside of the slipstream and 2.5" within. I suggest you obtain a copy and check it out for yourself, just to be sure. There is a lot of valuable info in there. I have seen a copy of it online somewhere.

[Taylorman]

Happy New Year !!!

Well I was one of the lucky one to have everything wiped when this website went down, oh well.
I did have a few answers from specific question that I will need to re-post.
So to refresh everybody's memory I have attached the latest progress on my project.
Currently covering the tail feathers.
Question, what is the stitching interval measurement for the tail feathers, 4"?
Thanks all!