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Engineering drawing / measurements of the aluminum hinges?

 
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aearmstrong



Joined: 30 Nov 2013
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Location: KCCR

PostPosted: Sat Jan 17, 2015 6:09 pm    Post subject: Engineering drawing / measurements of the aluminum hinges? Reply with quote

Hi,

I've got a crazy idea to try printing out the hinges on a 3D printer - have the dimensions been posted somewhere? Found plenty of pictures, but no actual dimensions.

[quote][b]


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taildrags



Joined: 29 Dec 2009
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PostPosted: Sat Jan 17, 2015 7:59 pm    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

There are no engineering drawings for them although I started drawing them in wireframe in AutoCAD in hopes of having some molds made so I could have them extruded in Zytel. Too much trouble and cost, too low a demand for them.

Here's a picture with a ruler on it for scale. I could take some dimensions if you were serious about wanting to make something accurate.


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Oscar Zuniga
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womenfly2



Joined: 31 Jul 2007
Posts: 224

PostPosted: Sun Jan 18, 2015 4:30 am    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

Zytel ..... really?

WF2


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taildrags



Joined: 29 Dec 2009
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Location: Medford, OR

PostPosted: Sun Jan 18, 2015 9:41 am    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

Yes, Zytel. Dimensionally stable, tough, durable, self-lubricating, and can be injection molded to nearly complete state without all of the finishing operations that the cast aluminum ones require. Zytel is what I use for the wing rib attach clips that I also sell. I bought the rights and molds from Ed Fisher some years ago, and the clips are used on all of Ed's designs. Some photos here:

http://www.flysquirrel.net/rogueairparts


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Oscar Zuniga
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aearmstrong



Joined: 30 Nov 2013
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PostPosted: Sun Jan 18, 2015 9:54 am    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

Thank you. By chance could you take one from above while on the graph paper and ruler as well?

I don't know about Zytel, but a Taulman 3d is doing nylon filaments, though I suspect the current blends are too flexible for hinges.


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jack(at)textors.com
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PostPosted: Sun Jan 18, 2015 4:50 pm    Post subject: Engineering drawing / measurements of the aluminum hinges? Reply with quote

Oscar you amaze me! Can you help me with understanding the attach clips?

Sent from my iPad
Jack Textor

Quote:
On Jan 18, 2015, at 11:41 AM, "taildrags" <taildrags(at)hotmail.com> wrote:



Yes, Zytel. Dimensionally stable, tough, durable, self-lubricating, and can be injection molded to nearly complete state without all of the finishing operations that the cast aluminum ones require. Zytel is what I use for the wing rib attach clips that I also sell. I bought the rights and molds from Ed Fisher some years ago, and the clips are used on all of Ed's designs. Some photos here:

http://www.flysquirrel.net/rogueairparts

--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC &quot;Scout&quot;
A75 power




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=437203#437203












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taildrags



Joined: 29 Dec 2009
Posts: 1682
Location: Medford, OR

PostPosted: Sun Jan 18, 2015 6:02 pm    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

Jack;

All of Ed Fisher's designs use wing ribs that have tubular aluminum spars at the leading and trailing edges, with various arrangements of bent aluminum shapes to form the rest of the pieces. They are strong and light. The key elements to them are the "widgets", as Ed calls them. These are the molded nylon66 wing rib attach fittings that I now sell. You can get the idea if you look at the first photo on this page: http://www.flysquirrel.net/Longster/longsterUL.html

Some years ago, Ed made up a prototype wing rib for the Pietenpol using the widgets and assembling the rib after his traditional style. He presented the rib to Doc Mosher and a brief writeup on the rib appeared in a past issue of the BPA Newsletter. I borrowed the rib from Doc and I have it in my hangar to use as a go-by. Since then, I have made various parts and pieces of a cleaner prototype rib for the Piet that also incorporates the gap-sealing hingeless aileron method employed by Zenith on all of their ailerons, as well as an all-aluminum aileron. My hybrid Piet rib and aileron would save the builder time and effort, and perhaps weight, since aluminum ribs would also permit the use of fabric clips to secure the fabric to the ribs in place of rib stitching. It's all still in parts and in my head though and the one remaining part that I have been unable to work out is bending an aluminum angle into the shape required for the wing undercamber. Metal stretchers exist and that might be the way to do it, but I've never worked with them so I'm still stumped on how to bend metal in a way that stretches it. Ed's prototype wing used a flat bottom airfoil similar to the USA35B that is used on the Cub and others, so he didn't have any problem with his. Since I lean more towards maintaining the traditional FC-10 airfoil shape, I'm determined to keep the wing under camber.


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Ray Krause



Joined: 09 Oct 2013
Posts: 453

PostPosted: Sun Jan 18, 2015 9:38 pm    Post subject: Engineering drawing / measurements of the aluminum hinges? Reply with quote

Oscar,

Creating an undercamber from a piece of aluminum angle is very easy with a $69.00 set of stretcher/Shrinkers from Harbor Freight. I used them in building my cowl and a metal covering for my center section. They're actually fun to use. When I get a chance, I will send a photo.

Ray Krause

Sent from my iPad

Quote:
On Jan 18, 2015, at 6:03 PM, taildrags <taildrags(at)hotmail.com> wrote:



Jack;

All of Ed Fisher's designs use wing ribs that have tubular aluminum spars at the leading and trailing edges, with various arrangements of bent aluminum shapes to form the rest of the pieces. They are strong and light. The key elements to them are the "widgets", as Ed calls them. These are the molded nylon66 wing rib attach fittings that I now sell. You can get the idea if you look at the first photo on this page: http://www.flysquirrel.net/Longster/longsterUL.html

Some years ago, Ed made up a prototype wing rib for the Pietenpol using the widgets and assembling the rib after his traditional style. He presented the rib to Doc Mosher and a brief writeup on the rib appeared in a past issue of the BPA Newsletter. I borrowed the rib from Doc and I have it in my hangar to use as a go-by. Since then, I have made various parts and pieces of a cleaner prototype rib for the Piet that also incorporates the gap-sealing hingeless aileron method employed by Zenith on all of their ailerons, as well as an all-aluminum aileron. My hybrid Piet rib and aileron would save the builder time and effort, and perhaps weight, since aluminum ribs would also permit the use of fabric clips to secure the fabric to the ribs in place of rib stitching. It's all still in parts and in my head though and the one remaining part that I have been unable to work out is bending an aluminum angle into the shape required for the wing undercamber. Metal stretchers exist a!
nd that might be the way to do it, but I've never worked with them so I'm still stumped on how to bend metal in a way that stretches it. Ed's prototype wing used a flat bottom airfoil similar to the USA35B that is used on the Cub and others, so he didn't have any problem with his. Since I lean more towards maintaining the traditional FC-10 airfoil shape, I'm determined to keep the wing under camber.

--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC &quot;Scout&quot;
A75 power




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http://forums.matronics.com/viewtopic.php?p=437224#437224












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PostPosted: Mon Jan 19, 2015 1:38 am    Post subject: Engineering drawing / measurements of the aluminum hinges? Reply with quote

Oscar once again my friend you amaze me! Thanks!

Sent from my iPad
Jack Textor

Quote:
On Jan 18, 2015, at 8:03 PM, "taildrags" <taildrags(at)hotmail.com> wrote:



Jack;

All of Ed Fisher's designs use wing ribs that have tubular aluminum spars at the leading and trailing edges, with various arrangements of bent aluminum shapes to form the rest of the pieces. They are strong and light. The key elements to them are the "widgets", as Ed calls them. These are the molded nylon66 wing rib attach fittings that I now sell. You can get the idea if you look at the first photo on this page: http://www.flysquirrel.net/Longster/longsterUL.html

Some years ago, Ed made up a prototype wing rib for the Pietenpol using the widgets and assembling the rib after his traditional style. He presented the rib to Doc Mosher and a brief writeup on the rib appeared in a past issue of the BPA Newsletter. I borrowed the rib from Doc and I have it in my hangar to use as a go-by. Since then, I have made various parts and pieces of a cleaner prototype rib for the Piet that also incorporates the gap-sealing hingeless aileron method employed by Zenith on all of their ailerons, as well as an all-aluminum aileron. My hybrid Piet rib and aileron would save the builder time and effort, and perhaps weight, since aluminum ribs would also permit the use of fabric clips to secure the fabric to the ribs in place of rib stitching. It's all still in parts and in my head though and the one remaining part that I have been unable to work out is bending an aluminum angle into the shape required for the wing undercamber. Metal stretchers exist a!
nd that might be the way to do it, but I've never worked with them so I'm still stumped on how to bend metal in a way that stretches it. Ed's prototype wing used a flat bottom airfoil similar to the USA35B that is used on the Cub and others, so he didn't have any problem with his. Since I lean more towards maintaining the traditional FC-10 airfoil shape, I'm determined to keep the wing under camber.

--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC &quot;Scout&quot;
A75 power




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=437224#437224












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RoyFollman



Joined: 07 Oct 2019
Posts: 3
Location: London

PostPosted: Tue Nov 10, 2020 3:54 am    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

Ray Krause wrote:
Oscar,

Creating an undercamber from a piece of aluminum angle is very easy with a $69.00 set of stretcher/Shrinkers from Harbor Freight. I used them in building my cowl and a metal covering for my center section. They're actually fun to use. When I get a chance, I will send a photo.

Ray Krause

Sent from my iPad


[/quote]
Thanks for this advice. I tried it and worked well. Hey, guys, did you have problems with your printers? I had. I wanted to change it because I couldn't find the problem. I was at so many repairs that better was to buy a new one. However, I found the problem, it was in the cartridge and I didn't understand how other repairers couldn't find it. I was shocked because the problem was in a few bucks. I bought a new cartridge from https://www.mrdepot.ca/collections/brother-toner-cartridges . Here I found the best price than on other sites.


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echobravo4



Joined: 09 Apr 2010
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PostPosted: Wed Dec 02, 2020 4:36 am    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

Shrinkers/stretchers work well as long as the metal won’t be welded.
The heat will tend to flatten the metal out again.


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taildrags



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PostPosted: Wed Dec 02, 2020 8:15 pm    Post subject: Re: Engineering drawing / measurements of the aluminum hinge Reply with quote

Earl: right you are. However, all of Ed Fisher's aluminum rib designs employ riveted connections using pulled rivets, no welding. And the metal is all so thin that you'd have to be a real hand with the torch to weld any of it except fishmouth connections on tube joints and clusters with decent wall thickness to let you run a bead.

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