Rudi’s Fokker E-III ‘Eindecker’ Build

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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by ColdFingers » Wed Jun 07, 2017 3:17 pm

Rudi,

A question, if I may. Does the annealing process not weaken the structural integrity of the structure?
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by RudiGreyling » Wed Jun 07, 2017 4:01 pm

ColdFingers wrote:Rudi,

A question, if I may. Does the annealing process not weaken the structural integrity of the structure?
No not of the structure, but the pipe at that specific point of annealing has a lower strength that needs to be taken into account for the whole structure. Make sense?
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by ppakotze » Fri Jun 09, 2017 9:28 am

Rudi foto vir jou soortgelyke konstruksie.
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by RudiGreyling » Fri Jun 09, 2017 10:48 am

ppakotze wrote:Rudi foto vir jou soortgelyke konstruksie.
That looks interesting what is it...i see it has an undercamber wing. The Original Fokker E-III also had an undercamber wing, but the replica i am building has a modern Clark Y profile.
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by Bearcat » Fri Jun 09, 2017 11:06 am

RudiGreyling wrote:
ppakotze wrote:Rudi foto vir jou soortgelyke konstruksie.
That looks interesting what is it...i see it has an undercamber wing. The Original Fokker E-III also had an undercamber wing, but the replica i am building has a modern Clark Y profile.
Looks like a Bleriot
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by RudiGreyling » Fri Jun 09, 2017 12:14 pm

Bearcat wrote:
RudiGreyling wrote:
ppakotze wrote:Rudi foto vir jou soortgelyke konstruksie.
That looks interesting what is it...i see it has an undercamber wing. The Original Fokker E-III also had an undercamber wing, but the replica i am building has a modern Clark Y profile.
Looks like a Bleriot
Very Nice, I see Airdrome Aeroplanes have 2 versions of the Bleriot as well. 75% scale and 100%scale = http://www.airdromeaeroplanes.com/bleriot.html
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Last edited by RudiGreyling on Fri Jun 09, 2017 12:16 pm, edited 1 time in total.
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by Tomcat1 » Fri Jun 09, 2017 12:15 pm

Bearcat wrote:
RudiGreyling wrote:
ppakotze wrote:Rudi foto vir jou soortgelyke konstruksie.
That looks interesting what is it...i see it has an undercamber wing. The Original Fokker E-III also had an undercamber wing, but the replica i am building has a modern Clark Y profile.
Looks like a Bleriot
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by Tomcat1 » Fri Jun 09, 2017 12:15 pm

That is a Bleriot guys :wink:
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by RudiGreyling » Fri Jun 09, 2017 3:07 pm

Ok this weekend I am ready to tackle the Fuselage sides. Below is the drawing, you need 2 mirror images of each other, Left and Right. (Once again I deleted the dimensions to protect Kit Manufacturer IP). Same process as the Elevator, built flat on a table. This time around I need to learn new skills again...fishmouthing or coping the tubes to fit each other... More on that Monday enjoy the weekend.

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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by ppakotze » Sat Jun 10, 2017 10:44 am

Jip photo taken at Aviodrone. Die museum is vol Fokkers en ook vliegtuie maar ek het nie 'n Eindecker gesien nie.

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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by Cedric Snr » Mon Jun 12, 2017 9:04 am

Hallo Rudi,

here is a very inexpensive design you can have made at any engineering shop of a Fishmouthing/Notching tool that works of a normal drill.
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by RudiGreyling » Mon Jun 12, 2017 10:06 am

Cedric Snr wrote:Hallo Rudi,

here is a very inexpensive design you can have made at any engineering shop of a Fishmouthing/Notching tool that works of a normal drill.
Hi Cedric, thank you very cool, I think that tool will work great on Steel! Lucky Aluminium is very soft so a quick trace and then belt sander and deburring bench grinder did the trick for me. I will post more on that later. Also most tube joins on my kit are different diameters so you need to account for a center offset so that the gusset will rivet flush against both tubes. More later today when i update the weeks progress. Kind Regards, Rudi
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Week 3: Start on the Fuselage Sides

Unread post by RudiGreyling » Mon Jun 12, 2017 2:30 pm

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Week 3: Start on the Fuselage Sides [14 Hours]

Good afternoon Av8tors,

So I started on the fuselage sides, did 14 hours on the fuse so far, they say it should take 40H, we will see where I end up.

Once again I am posting a little more detail just because some techniques are new to me, and you might want to know.

First cut and create over sleeves, these are reinforcement points later for the Landing Gear and Cabines with Flying Wires attachments.
Image

Bend the bottom longeron, and insert the oversleeves:
Image

Tube Coping: You can eyeball the coping and then make it fit by trial and error, but i don't want to practice make a mistake and screw up and then scrap material...so I found this little Tube Coping Calculator: http://www.metalgeek.com/static/cope.pcgi . Add your tube dimensions and then you print it, cut it out, wrap around your tube and trace it. Most of the tubes need offsets since the diameters between the cut tube and parent tube is not the same, you want the tube to lay flat next to each other so that when you rivet the gusset on, the gusset sits flat.
Image

This is my Coping and Deburing machines, a Belt sander and a bench grinder with deburing wheels.
Image

By working the Tube on the belt sander rounding and at an angle as shown you create a perfect fish mouth in 1 minute.
Image

Result after belt sanding
Image

Run it on the bench grinder deburring wheel for 1 minute, then you have a perfect fish mouth in 2 minutes flat.
Image

Insert the vertical supports, coped both ends, lifted slightly with spacers to align the the top of the outer longeron tubes.
Image

Insert the cross bracing
Image

Next the the tedious task to create Gussets from rough cut Alu Stock. First the original stock supplied
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Cut to shape
Image

Match Drilled to the fuselage and deburred, watch your spacing and edge distances (1.5 hole diameters left to the edge)
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The Front fuselage Side, all the gussets riveted in place with the exception of the cross bracing, they are just clecko'ed in for now, since I will need to remove them for access when you fit the horizontal supports. Notice the Machine plug and bolt on the front, this is the top engine mounting bolt. I also drilled small pilot holes where the wing carry through spars will attach to the fuselage so that I can easily enlarge them later when the fuse is built.
Image

I think this took a bit long, since there was lot of figuring out and new techniques to learn. This week I will add the rear longerons and bend them to join at the tail, then make a mirror image for the other side fuselage.

Till Next Week,
Groete
Rudi
Last edited by RudiGreyling on Tue Jun 13, 2017 7:58 am, edited 1 time in total.
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by Pete » Tue Jun 13, 2017 7:04 am

Magnificent Rudi and thank you for your detailed presentation, we are all learning new things here! =D> :D
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Re: Rudi’s Fokker E-III ‘Eindecker’ Build

Unread post by Fransw » Tue Jun 13, 2017 12:36 pm

Pete wrote:Magnificent Rudi and thank you for your detailed presentation, we are all learning new things here! =D> :D
Yes, thank you!

Its good to see the master at work!

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