Scratchbuilt Scale Fokker Eindecker E.III - RC Groups
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Nov 09, 2017, 03:22 PM
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Build Log

Scratchbuilt Scale Fokker Eindecker E.III


Hello guys...

Not sure if this is the right section of the forum for this one, but it was the one that makes more sense to me, so, if there's another better place for this thread i ask moderators to move it to such a place and let me know where it was moved to.

First of all, sorry for my eventual gramar mistakes, english is not my first language, so please be kind guys...

Well, I'd like to share with you my last project.

It's not finished yet, but is almost there...

It's a scratchbuilt Fokker Eindecker E.III.


The History


For a unknown reason, I have always been in love with this airplane and decided it was the perfect time to start building one myself.

As usual, i always start a project by performing a deep research and collecting all the pictures and docs i can find on the web about the specific model.

For my surprise, i couldn't find as much detailed pictures and documentation of this model, so i couldn't keep myself loyal to a specific version, instead, i used some details from a given model, another from other models and so on.

I had to do that in order to have all the parts together as i exptected it to be.

I have been collecting pictures and all the kind of materials for the last 4 or 6 months.


Project's parameters


I not only wanted to build a fully detailed model, but i also decided it would be interesting to make thinks even harder.

How?

What if we scaled it down to a 60cm wing span?

Not hard enough yet, what if we keep the original wing warping mechanism for rolling?

Well, wing warping in a 60cm wing span model?

Yes, we're getting there.

With all those initial parameters it was time to start planning and setting a few goals:

1. Weight should be around 160 grams
2. It should allow me to use a 1811-2000kv brushless i have had for the last 13 years and haven't ever used
3. It should allow me to use a 2s 450mah Lipo i have had for the last 13 years and also haven't ever used
4. It should allow me to use a two micro servos i have had for the last 13 years and also haven't ever used
5. It should have as much scale details as possible
6. It should have wing warping for rolling
7. It should be covered with craft tissue (not esaki)
8. It should be painted, aged and wheathered in order to look as much as the real thing as possible
9. It should use pull-pull for all the control surfaces
10. It should have a low wing loading
11. It should be able to fly outdoos
12. It shoud have functional front and rear suspensions like the real thing
13. I should not follow any plan, instead, i should project it in 3D in a CAD program (Rhino in my case) and use the 3D model to simulate and plan everything before start building it.
14. It should have an alluminium cowl and panels like the real thing
15. It should fly slow
16. Most of the electronic components should be hidden in the fuselage

Model data

Wingspan: 60cm
Wing chord: 10.5cm
AUW: 160 grams
Wing Area: 5,75 dmē
Wing Loading: 27~35 grams/dmē

Color: Aged light brown

Motor: 1811-2000 kv micro brushless
Propeller: 6x3 ou 7x3 (depending on the final weight)
Static thrust: 130~160 grams depending on the choosen propeller
Battery: Turnigy nanotech 2s 450mah Lipo
Servos: 2x 2.5g Turnigy S0251 micro servo for tail control and 1x 9x metal gear Tower Pro for wing warping mechanism
Receiver: Radiolink R6D
Esc: Turnig Plush 6A ESC

Bulding materials: Balsa, plywood, craft tissue, artist acrylic paint, thin and medium CA, carbon rods, barbecue wood sticks, and other stuffs available in the shop.

That's it, in the following posts i will be posting the pictures i already have and as the construction progresses i'll keep taking pictures and posting them here.

Fell free to interact with me, ask questions, suggest anything, etc....
Last edited by hate; Nov 17, 2017 at 01:24 PM.
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Nov 09, 2017, 03:26 PM
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Blueprints


For this project i'll be using the following blueprints (actually 3 view)
Nov 09, 2017, 03:28 PM
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Reference images set, it's time to work...
Nov 09, 2017, 03:36 PM
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After a few days of planning and work i had it done and ready to be built.
Nov 09, 2017, 03:37 PM
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Lets start cutting and gluing some balsa...
Nov 09, 2017, 03:38 PM
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First scale details start to appear....
Nov 09, 2017, 03:39 PM
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In order to have the wing warping mechanism working i had to have a very flexible wing

The strings and stripes are just scale details and have no function at all.
Nov 09, 2017, 03:41 PM
Senior to who? Member
crossup's Avatar
Interesting challange. I for one would like to know how those Nanotech batteries are after 13 years....those are twice the age of my oldest Lipo and 3x older than any Turnigy battery I have.
Nov 09, 2017, 03:43 PM
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Cowl and metal panels done.

The cowl was spun in the lathe.

I have no experince with metal spinning so i had to learn it and i have to say: It was a pain in the ass.

I used 0.5mms roof alluminium sheet and it almost impossible to deform it without screwing things up.

I had to try 18 times untill i finally got a usable cowl.
Nov 09, 2017, 03:43 PM
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Quote:
Originally Posted by crossup
Interesting challange. I for one would like to know how those Nanotech batteries are after 13 years....those are twice the age of my oldest Lipo and 3x older than any Turnigy battery I have.
Believe you or not, they are PERFECT.

Not puffed, charged and ballanced normally.

It should be studied shouldn't it?
Nov 09, 2017, 03:46 PM
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Decided to work on a few details on the metal parts...

Made some experiments with the metal finished used at that age, don't remember the name, and it was impossible to reproduce in these very thin metal sheets.

I didn't want to leave it raw, so with a dremel and a few set of tools i made a similiar effect.
Nov 09, 2017, 03:47 PM
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More working on the tail
Nov 09, 2017, 03:50 PM
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Wing cables support.

I made it with plastic tubes filled with barbecue sticks.

Glued them together, some aluminium on the tip, functional pulley for the two cables that will be used for warping the wing and it's done.

The pulley was turned in my lathe with a scrap piece of plastic i had laying around in the shop.
Nov 09, 2017, 03:51 PM
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Tail servos in place.

They have a sliding bed for ease of access once it's very hard to work with my hands in such a small model


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