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JW Büker Jungmeister build

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JW Büker Jungmeister build

Old 09-23-2022, 01:07 AM
  #201  
mitchilito
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So all the basic assembly of the aircraft is DONE. I still have a bunch of detail work to do (install seat, instrument panel, some radio gear etc) and then finish sand/prep for cover. I have to hand it to JW: because of the CNC/CAD design, without much trouble the aircraft builds up perfectly rigged in every respect. Fantastic.

I needed my workbench for a different quick project so I had to move the whole aircraft off of it. I couldn't believe how light the whole thing is (minus tail feathers). This aircraft is INCREDIBLY lightly built. It is also a little bit more fragile than I'm used to. It probably won't take a lot of abuse out at the field but then it's meant to fly, not bang around. Here's a pic of it standing on its nose. The picture can't capture how huge it looks in my shop. It FILLS the whole car bay it's standing in.



BIG


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Old 09-23-2022, 02:17 AM
  #202  
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Maybe someplace it’s already been revealed but what are your plans for covering and finishing materials?

Bob
Old 09-23-2022, 04:10 AM
  #203  
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Bob, I will be using Balsa USA Planetex light Dacron cloth with Stewart Systems Eco Bond/Eco Fill. Final paint will be Klass Koat epoxy paint.

You will be seeing the process VERY soon.
Old 09-23-2022, 04:14 AM
  #204  
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Had to clear the bench to get my baby ready to go out this weekend



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Old 09-23-2022, 05:00 AM
  #205  
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I miss mine!!


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Old 09-23-2022, 01:43 PM
  #206  
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Oh man, that is gorgeous. What manufacturer? Where’d it go?
Old 09-23-2022, 03:17 PM
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Originally Posted by mitchilito View Post
Oh man, that is gorgeous. What manufacturer? Where’d it go?
Mitch it was a Peter Barth 1/3 scale, unfortunately I got a little too overconfident with it and it was rolled over onto its back in a severe cross wind landing and seeing that I had a second one 3/4 built I decided that it was to go to the scrap heap.
Old 09-24-2022, 01:43 AM
  #208  
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Originally Posted by tmac48 View Post
Mitch it was a Peter Barth 1/3 scale, unfortunately I got a little too overconfident with it and it was rolled over onto its back in a severe cross wind landing and seeing that I had a second one 3/4 built I decided that it was to go to the scrap heap.
OUCH! I'm sorry to hear that. Voglesang down the street here in NC (where I picked up my Bücker) sells the Barth Waco and I've been drooling over it bad!

My little Phoenix YMF is a fantastic and fun toy airplane, but it's more "cartoon scale" than actual scale. But it's so easy to transport/assemble/store etc that it's absolutely one of my favorite models ever. Plus it flies GREAT Yes, I really like it.

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Old 09-24-2022, 08:38 PM
  #209  
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Good bit of flying there buddy!
Old 09-25-2022, 12:01 AM
  #210  
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Racing ahead now!!!




Old 09-25-2022, 01:00 AM
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[QUOTE=tmac48;12745107]Racing ahead now!!!

[/QUOTE

Wow, you are moving right along. Fun times


Old 09-27-2022, 03:05 AM
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Tons of detail work to finish prior to cover. I tend to leave a lot of final finish work undone as I build so I've got to address all that now.

Here, I've pinned the cabanes. The plans show wood screws pinning the brackets in but I couldn't figure out how that could work: if you drilled the proper size hole for a wood screw through the cabane (and thus the aluminum fitting) then when you tried to screw the wood screw in, the fitting would stop the screw immediately. My solution was to drill and tap the holes then use 3mm button head bolts epoxied into place. I really like the way it worked.

On a related note, the wing struts don't get the fittings pinned because they are ALWAYS under compression. Well, using that rationale, the exact same thing applies to the fore and aft cabanes - but NOT the diagonals. So only the diagonals really need pinning. Food for thought.



All heads to the inside of course.


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Old 10-03-2022, 01:37 AM
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Details details details. Mounted the instrument panel today. I purchased this panel when I bought the plane from Voglesang Aeroscale. They claim "museum quality." I'm not sure about that, but it IS gorgeous. It was surprisingly pesky to install but in the end I am very happy with it.


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Old 10-05-2022, 02:38 AM
  #214  
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Now the pilot installation. As I said many times, I'm not a real scale buff HOWEVER I can't stand to see a beautiful airplane fly buy with nobody in the cockpit!! Just looks wrong to me. However, I don't really need a fully scaled cockpit to make me happy. I'm "stand-off scale" all the way.

However, I did begin the process of installing a seat I bought from Voglesang Aeroscale. After setting that and the 3' tall pilot in place, along with all the needed structure, I just couldn't bring myself to do it! I know many small buffs will hate my idea I decided to install a cockpit floor and a pilot bust instead. Some day, I suppose, if the next owner of this plane wants a scale cockpit the floor is easily removable.

I had the PERFECT piece of floor material kicking around. I made several of these composite plates of carbon sandwiched foam a while back for another project. Strong but super light. Read the captions for further explanation. I will say this right now: this process saved me at least a half pound, maybe more. And that's weight behind the CG which I do not want.

Plate before trimming

Weight of plate after trimming

Weight of seat. This does not include substantial installation structure

Plate slides back into recepticals in back. Plate is easy to remove/install

I will cut a hole for the pilot to pass through of course.



Last edited by mitchilito; 10-05-2022 at 02:43 AM.
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Old 10-05-2022, 10:15 AM
  #215  
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OH MY GOD!! SOMEBODY CALL AN AMBULANCE!!!


Turning Hans into a bust. Poor guy.
Old 10-05-2022, 02:48 PM
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Mitch this is a pic of the pilot my wife made for the 1/3 Waco, she will be making me a 1/2 scale one for the BUCKER. If you are not going to use the seat is it the 1/2 scale one and would you be interested in selling it? if so would gladly take it off your hands.



Old 10-16-2022, 03:02 AM
  #217  
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Mitch, how did you handle the cap strips? It looks like I need to sand a bevel on all of them to get them to lie on the rib without a bend at the ends..




Old 10-16-2022, 12:56 PM
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Yep, you are doing it mostly like I did. This is a interesting part of this kit design. Not my favorite.
Old 10-16-2022, 01:19 PM
  #219  
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Originally Posted by mitchilito View Post
Yep, you are doing it mostly like I did. This is a interesting part of this kit design. Not my favorite.

Yes very tedious, firstly you need to sand the bevel and when you are happy with that you then cut the strip to length, doable but a lot of them, need to listen to some music, have a coffee and try and enjoy the ride!!
Getting a bit done.


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Old 10-17-2022, 03:05 AM
  #220  
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Holy cow, I better get going on mine. I can’t let you catch up!
Old 10-17-2022, 03:20 AM
  #221  
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Originally Posted by mitchilito View Post
Holy cow, I better get going on mine. I can’t let you catch up!

No need to worry, I'm very happy to sit back and let you work out the hard bits so I don't have to
Old 10-24-2022, 06:15 PM
  #222  
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What's happening at your end?


Old 10-25-2022, 03:32 AM
  #223  
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Every time I get to a point that I just can't figure out what to do next I hit the computer and study your build thread and all refreshed get back at it!!



Old 10-26-2022, 03:23 AM
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[QUOTE=tmac48;12748779]Every time I get to a point that I just can't figure out what to do next I hit the computer and study your build thread and all refreshed get back at it!!


That was the whole idea! I'm glad it's helping. Work on my end has been spotty at best lately but yesterday I got some stuff done. Pics to follow soon.
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Old 10-27-2022, 06:32 PM
  #225  
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Mitch, thought you may be interested in these items in 1/2 scale that I'm getting from UK ( Tailored pilots ) My wife will do the rest. You can order one fully clothed and painted if you wish.



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