Previous Thread
Next Thread
Print Thread
Rate This Thread
Hop To
Page 1 of 6 1 2 3 4 5 6
#3133178 - 11/08/10 07:28 PM MMaister's KG13A project!  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Hi Cockpit builders,

I would like to introduce my new controller project. This is going to be an accurate replica of the KG13A Steuerknppel. There are several replicas on the market today. What makes mine a bit special, that it is -just like to original- made of aluminium. I would like to pin down, that this won't be offered for purchase. This is a pure hobby and fun for me.

I had been close to buy a copy from the Tarmac guys, when a friend of mine who works for a famous vintage aircraft restaurator workshop in Hungary offered me a rough casting of the famous KG13. I couldn't resist to buy it and I immediately started to make a plan with that.

And right here we are now. I have the casting and a lot of ideas how to comply it.
What i can see right now that i will need a lot of time and energy of handcrafting, engineering, some money and a lot of help from people who have information about the steuerknppel, or have some good ideas about how to come over the coming technical problems. I know that on this forum there are plenty of both, and i would apreciate their help a lot.

To have the close to accurate dimensions of the original column i bought a resin 1:1 replica of it. That is what i will use to copy the grip the trigger and the buttons. I will also use my engineering experience and 3D CAD system to solve some challange around the trigger mechanism.

But the first step is to refine and polish the rough surface of the casting to achive a smooth metal base to work further with. Ok enough from the introduction, here are some pictures!:)The pictures were taken adfter 2,5hours of rough refining work:


KG13A-5 by csaba.moharos, on Flickr


KG13A-4 by csaba.moharos, on Flickr


KG13A-3 by csaba.moharos, on Flickr


KG13A-2 by csaba.moharos, on Flickr


KG13A-1 by csaba.moharos, on Flickr

Inline advert (2nd and 3rd post)

#3133392 - 11/09/10 01:59 AM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Jun 2006
Posts: 464
MudPuppy Offline
Member
MudPuppy  Offline
Member

Joined: Jun 2006
Posts: 464
Appalachian foothills in Virgi...
Good luck on this project and it'll be great if you could post some updates from time to time. Where did you find the resin 1:1 model of the KG13? Was it an Italian modeler named Maurizio?
Regards,
Derek

#3133532 - 11/09/10 11:53 AM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Jun 2001
Posts: 1,319
Boandlgramer Offline
Member
Boandlgramer  Offline
Member

Joined: Jun 2001
Posts: 1,319
Upper-Bavaria , United States ...
Great idea Maister

I wish, your project will be a success.

kind regards

Boandl


The first time I saw Chuck Yeager, I shot him down.
Petrosillius Zwacklmann ( Held ).

http://www.simulationscockpit.de
#3133540 - 11/09/10 12:16 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Hi,

thank you for the kind words. I will keep sending posts time by time to keep this thread updated.
Yes, the resin model is bought from Maurizio from Italy.

regards
MM

#3133736 - 11/09/10 05:30 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Feb 2010
Posts: 22
JFA2 Offline
Junior Member
JFA2  Offline
Junior Member

Joined: Feb 2010
Posts: 22
Wow! Have fun with your project!


JFA
#3148206 - 12/02/10 09:40 AM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Hi,

Very very slow processing. We started to working on it with the CNC milling machine. Hopefuly it will be finished soon.
Now comes the upper part which is quite challanging.


KG13-machining1 by csaba.moharos, on Flickr


KG13-machining2 by csaba.moharos, on Flickr

#3153138 - 12/08/10 06:12 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Update 3.

Preliminary machining is done. Further tuning will come when i will have all the parts to mount onto the stick.

I ordered some replica KG13 parts from germany. The trigger, junction box, button clip, and some other things are on the way from there. That is the most expensive part of the project:P

The most challanging part will be to simulate the bakelit grip with diamond pattern. I consulted with some modellers and they suggested to use 2 component epoxy clay. I will use milliput and Pro-Create mixture. The pattern will be copied from a bicycle grip which has a very similar pattern.
I worry a bit about this so if anyone has a better idea, just let me know:)

The knobs and their sockets will be machined from ABS plastic. Will be fitted with Knitter momentary switches.

And some pictures:


DSC_0009_DxO by csaba.moharos, on Flickr


DSC_0008_DxO by csaba.moharos, on Flickr


DSC_0003_DxO by csaba.moharos, on Flickr


DSC_0001_DxO by csaba.moharos, on Flickr

Last edited by VO101MMaister; 12/08/10 06:13 PM.
#3154012 - 12/09/10 08:49 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Dec 2006
Posts: 1,600
Tbag Offline
Member
Tbag  Offline
Member

Joined: Dec 2006
Posts: 1,600
Haslemere, UK
Amazing! Great stuff MMaister!


The knack of flying is learning how to throw yourself at the ground and miss. - Douglas Adams
#3154641 - 12/10/10 09:14 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Thanks Tbag:)

The postman brought some nice stuff today:D


DSC_0011_DxO by csaba.moharos, on Flickr

#3155120 - 12/11/10 07:29 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: May 2000
Posts: 2,536
AV8R Offline
Senior Member
AV8R  Offline
Senior Member

Joined: May 2000
Posts: 2,536
Southern California USA

Very nice work and project!
Where did those parts come from, the Tarmac guys?

If you need pictures of a real KG13 stick, I found these:













I have two real KG13s in my collection, if you need measurements or other pics
let me know.

Good luck


AV8R
#3155145 - 12/11/10 08:35 PM Re: MMaister's KG13A project! [Re: AV8R]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Hi AV8R,

no, the parts came from Horst Reinecker from Germany. He is a maker of replica luftwaffe aircraft parts.It is his former webshop:
http://www.aeroart.de/en/index.php

Thank you for the pictures. But I think that I have already downloaded all the KG13 pics from the internet:)

There is one part of the stick what is still quite mysterious for me. To keep the trigger in firing position there is a plunger here:



Unfortunately I don't have information on the specs of this part. What is its shape, what are the dimensions of it?
If you could take some macro pictures and make some measurments for me about this part that would be fantastic.

cheers
MMaister

Last edited by VO101MMaister; 12/11/10 08:35 PM.
#3155456 - 12/12/10 03:27 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Nov 2001
Posts: 3,760
Sokol1 Offline
Senior Member
Sokol1  Offline
Senior Member

Joined: Nov 2001
Posts: 3,760
Internet
MMaister

This pointed part is one "pressure ball" (dont know correctly name), like:


Thanks to Inigohe from Escuadron69 for this picture.

When you flip trigger down, this ball lock in this recess point in "ready to fire" position.



When you need need put trigger in safety position, just push the trigger forward with your finger, the ball leave the recess point and the coil spring do the rest.


Uploaded with ImageShack.us

wink

Sokol1




Last edited by Sokol1; 12/12/10 03:37 PM.
#3155658 - 12/12/10 09:59 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Hi Sokol,

thanks for sharing the info. I am afraid it is only partly true.
I inspected a bit my parts and consulted with Herr Reinecker, and I think I have the solution.

It is true that a sping plunger hold the trigger in a firing position.

First of all the recessed point you indicate is on the top when the trigger is locked in "armed" position (so it is useless), but there is no "recess" point needed on the trigger at all.
It would be sily solution, becouse it would also lock the movement of the trigger toward the firing button.
The engineers at Argus were very smart guys. They did it like this:

There is a ball pressed by a spring toward the trigger as you showed as well. But the ball is blocked from falling out only by the trigger itself.
They made a path for this ball around the shaft of the trigger.


triggermech1 by csaba.moharos, on Flickr

You can see, that the ball runs freely around the trigger shaft but there is one slope with an edge to block it. When you "arm" the trigger you force the ball over this slope. The edge will hold it until you force it over back again. But you can move the trigger freely towards the fire button.

Clever, elegant and simple. German engineering:D

Last edited by VO101MMaister; 12/12/10 10:00 PM.
#3155723 - 12/13/10 12:04 AM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Nov 2001
Posts: 3,760
Sokol1 Offline
Senior Member
Sokol1  Offline
Senior Member

Joined: Nov 2001
Posts: 3,760
Internet
Nice.

My thought was based on observation of pictures from Web, since I never saw a real KG-13, and lost the opportunity to observe closely his Russian version on Mig-15 in local museum storage.

These pictures show this slope very well:


http://img63.imageshack.us/img63/3818/kg13cneu1.jpg
http://img87.imageshack.us/img87/6821/kg146.jpg
http://img12.imageshack.us/img12/4302/kgf13d12.jpg


Thank you.

BTW - I dont find prices in Aeroart page, is need email asking?

Sokol1


Last edited by Sokol1; 12/13/10 12:55 AM.
#3155875 - 12/13/10 07:09 AM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Wow, I haven`t seen these pictures. I like the one with the special double button pushing trigger:)

You should mail for prices. I can tell you they are not cheap:P

#3155980 - 12/13/10 02:43 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Nov 2001
Posts: 3,760
Sokol1 Offline
Senior Member
Sokol1  Offline
Senior Member

Joined: Nov 2001
Posts: 3,760
Internet

#3174223 - 01/07/11 09:36 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Oct 2010
Posts: 217
VO101MMaister Offline
Member
VO101MMaister  Offline
Member

Joined: Oct 2010
Posts: 217
Haugesund, Norway
Hi Pit builders,

Happy New Year to All!

After a longer brake I worked a lot today on the steuerknppel. Now it realy starts to look and feel like a KG13:)
Today I installed the trigger mechanism. It was the most scary part of the whole project, and i am very happy with the result. There was a lot of measuring, trying before every single hole drilling, but it was well spent time.
The mech. works as it should. The torsion spring holds the trigger in safe position, and the ball with the push spring keeps it in firing position. With a little push it jumps back to safe.

On the pictures the trigger shaft is not fully inserted and the spring is not trimmed. I will do it only at the final assembly.

I also mounted the junction box and the cable holder.

And the pics:


DSC_0898 by csaba.moharos, on Flickr


DSC_0899 by csaba.moharos, on Flickr


DSC_0900 by csaba.moharos, on Flickr


DSC_0901 by csaba.moharos, on Flickr


DSC_0906 by csaba.moharos, on Flickr


DSC_0905 by csaba.moharos, on Flickr


DSC_0907 by csaba.moharos, on Flickr

#3174351 - 01/08/11 12:39 AM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Feb 2010
Posts: 64
SkoshiTiger Offline
Junior Member
SkoshiTiger  Offline
Junior Member

Joined: Feb 2010
Posts: 64
Perth, Western Australia
This is really comming together. Thanks for the update!

Cheers!


Do you hear that, Fezzik? That is the sound of ultimate suffering. My heart made that sound when the six-fingered man killed my father.
#3174512 - 01/08/11 10:37 AM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Aug 2006
Posts: 202
Valisk_61 Offline
Member
Valisk_61  Offline
Member

Joined: Aug 2006
Posts: 202
Widnes, UK
It's looking really, really nice. Great attention to detail. notworthy

What are your plans for the stick base?


FS~Valisk 'Val'
www.skiesoffire.org

"I've never seen the Icarus story as a lesson about the limitations of humans. I see it as a lesson about the limitations of wax as an adhesive." - Randall Munroe
#3174556 - 01/08/11 02:06 PM Re: MMaister's KG13A project! [Re: VO101MMaister]  
Joined: Dec 2009
Posts: 561
AndyB Offline
Member
AndyB  Offline
Member

Joined: Dec 2009
Posts: 561
Ayrshire, Scotland
Wow! What a great piece of engineering.

How did you manage to crosshatch the trigger padle ? Was it cast like that or, did you do it manually ?

Well done anyway.

Andy


Andy's simpit: http://www.simpit.me.uk
Page 1 of 6 1 2 3 4 5 6

Moderated by  RacerGT 

Quick Search
Recent Articles
Support SimHQ

If you shop on Amazon use this Amazon link to support SimHQ
.
Social


Recent Topics
Covid-19 information
by oldgrognard. 04/04/20 03:58 PM
Covid 19
by KRT_Bong. 04/04/20 03:38 PM
Boooo Hissss
by bones. 04/02/20 10:45 PM
No internet = FU loyal customers
by BlueHeron. 04/02/20 12:52 PM
Copyright 1997-2016, SimHQ Inc. All Rights Reserved.

Powered by UBB.threads™ PHP Forum Software 7.6.0