Re: Demag TC 500 truck crane in scale 1/24
 

Looking Good Kerst.
The box is a work of art for sure.

Re: Demag TC 500 truck crane in scale 1/24
 

I finished the outrigger boxes. The vertical movement is hand operated with a screw thread inside, very simple.
https://c2.staticflickr.com/2/1529/2...8f3ddc1e_b.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

I put the FAUN carrier together again. Apart from a few details (never ending!) the carrier is done.
I have started with the drawings of the upper works.

https://c2.staticflickr.com/2/1682/2...dbfa80e4_b.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

That is one great piece of work! I'm sure the upper works will be awesome, as well. I've really enjoyed seeing this come together.

Ken

Re: Demag TC 500 truck crane in scale 1/24
 

I made some good progress with the upper of the crane. It is based on a ¼” piece of AL with the two main frames of brass. I found some nice small gear motors to drive the 2 main winches, boom hoist and the winch for the luffing jib.The motors fit nicely underneath the winches. It looks like I even have room to spare.
https://c2.staticflickr.com/2/1635/2...bf51fae4_b.jpg
https://c2.staticflickr.com/2/1448/2...ec90f1f5_b.jpg
https://c2.staticflickr.com/2/1582/2...b096e75d_b.jpg
Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

Thanks for posting more ideas for projects

Re: Demag TC 500 truck crane in scale 1/24
 

The past week I worked on the swing gear. There is plenty of space for the whole assembly, so that was no problem. I added a spring-loaded clutch. I tried it and it seems a bit fast, so I might add a reduction later.
https://farm2.staticflickr.com/1480/...365876d6_h.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

I like the slip clutch!

Re: Demag TC 500 truck crane in scale 1/24
 

This is better. I added a reduction , so now the swing speed is perfect.
https://c2.staticflickr.com/8/7209/2...28ed1f43_b.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

That looks like a nice set-up. I enjoy seeing gears on anything. Good looking gears also. What is the purpose of the clutch? Great work so far!!!

Re: Demag TC 500 truck crane in scale 1/24
 

The winches are taking shape:
https://c2.staticflickr.com/8/7244/2...7b67e4f1_b.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

It is summer and I haven’t had too much time for the hobby. I worked a bit on the enclosure of the upper. It proved to be more complicated than I expected, mainly because I couldn’t agree with myself which method to use. It turned out to be a combination of brass and AL. There are quite a few angles that make it complicated. But it is getting somewhere.
So far:
https://c1.staticflickr.com/9/8151/2...af8a60fb_b.jpg
https://c2.staticflickr.com/8/7773/2...d16c8893_b.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

Kerst. It's looking good ! I keep follow you're build for sure. Next event i might need lifting help......:D

Re: Demag TC 500 truck crane in scale 1/24
 

The summer has been slow. Too many other distractions. And often it was simply too hot in the workshop.
I continued working on the enclosure of the upper and built the cab. I am quite happy with the cab. It came together nicely. I am still not really happy with the enclosure. The idea is to be able to remove the side panels easily. The interior still needs to be done. The door is ready, but the front window not yet. There are still lots of details to be done. The next step is connection the electric wiring.
https://c2.staticflickr.com/8/7484/2...ab3293cd_b.jpg
https://c1.staticflickr.com/9/8493/2...506e6705_b.jpg
https://c1.staticflickr.com/9/8345/2...b629e139_b.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

Can you put some of those tiny neodymium magnets on to hold the panels?
I want to try to use them on my 9W someday to hold the house panels on that need removed easily.

Re: Demag TC 500 truck crane in scale 1/24
 

I used them for some smaller panels like the one on the truck just in front of the first rear axle.

kerst

Re: Demag TC 500 truck crane in scale 1/24
 

During the past month I worked on the sheaves. They are the same size for the boom hoist and for the boom tip, 22 sheaves total. The difficulty was reproducing the spokes. After a couple of trials I figured out a way to make them. Basically there are 3 parts, the outer part, the spokes and the center core. I made the outer part from brass tube.This was pretty straightforward. The spokes were very labor intensive. I made them from 1/16” brass sheet, turned them to size and then milled the spokes out, 4 at the time. Then I soldered the parts together in a simple jig and finally finished them on the lathe in specially made chuck.

https://c2.staticflickr.com/6/5490/3...fbc39902_b.jpg

https://c2.staticflickr.com/6/5304/3...35abc572_b.jpg

https://c1.staticflickr.com/9/8279/2...114c3dc8_b.jpg

https://c2.staticflickr.com/6/5632/2...24da8768_b.jpg

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

Love the detail!! That's one thing I usually get too eager to finish and skimp on detail stuff. But that is what separates good work from awesome work. And love to see your ideas in set up jigs and customs tooling. I keep forgetting to complement you on your models when I see you!! I guess me starring at them speechless probably says more :). And also at a very small scale!!! I remember you saying about why the scale you build, realizing most rooms don't have high enough ceilings for larger scales!! Great work kerst!! Always enjoy any posts you share!!

Re: Demag TC 500 truck crane in scale 1/24
 

I know the pain in making several sheaves alike. I made 18 for my boom support cables. I showed step by step how I did them.

Re: Demag TC 500 truck crane in scale 1/24
 

Those sheaves are incredible!

Re: Demag TC 500 truck crane in scale 1/24
 

Nice work!

Re: Demag TC 500 truck crane in scale 1/24
 

After a little break I continued with the Demag crane.

https://c1.staticflickr.com/1/582/32...7cb2c103_b.jpg

I started working on the boom. I plan on making the longest main boom available, which is about 250 feet for the real one. It will result in about 10’ for the model.
This took some preparation, setting up jigs and so on, making the joints.
I use square brass and turn them to fit in the brass tubes. I connect them with silver solder.

https://c2.staticflickr.com/4/3939/3...f2c320c5_b.jpg

Then the holes are drilled.

https://c1.staticflickr.com/3/2896/3...a050b44b_b.jpg

I made a very successful setup to create the female joint on my old little Unimat. It works beautifully.

https://c2.staticflickr.com/4/3933/3...f01c5a58_b.jpg

https://c2.staticflickr.com/4/3734/3...f77ab418_b.jpg

In order to get the distance between the pins right I made a jig. I first drill the hole on the one side, then pin the chord on the jig and drill the other hole.

https://c2.staticflickr.com/4/3780/3...7db23bab_b.jpg

And this is the jig for the final assembly. It should guarantee proper alignment. We will see.

https://c2.staticflickr.com/4/3804/3...074fd7ee_b.jpg

I think I have everything ready to start producing all the boom sections.


Kerst

 

Re: Demag TC 500 truck crane in scale 1/24
 

very nice keep up the great work

Re: Demag TC 500 truck crane in scale 1/24
 

Thats so impressive! Your skills are amazing.

I can't wait to see how the lattice boom comes together

Re: Demag TC 500 truck crane in scale 1/24
 

When I did my lattice boom on my quick-and-dirty build I drove nails into a 2x4 in a zig-zag pattern and bent the rod around them. Worked for what it was but I think your method is better :D

Re: Demag TC 500 truck crane in scale 1/24
 

That is looking good. Your doing an amazing job on your crane, it is very impressive how you have hand built everything. I can't wait to see more pics on the progress of this build!

Re: Demag TC 500 truck crane in scale 1/24
 

if it is possible i would like to see you makeing a boom section on video hehe

Re: Demag TC 500 truck crane in scale 1/24
 

Nicely done!!! Looking forward to seeing more of this build!!
KP

Re: Demag TC 500 truck crane in scale 1/24
 

:jaw: Great job! I still can remember these cranes from my childhood days...

Re: Demag TC 500 truck crane in scale 1/24
 

While driving North on I99 near State College yesterday; I passed Kerst on his way to to some secret location to get the TC500's carrier ready for the upper works. :D

http://imagizer.imageshack.us/v2/102...924/7YS3cq.jpg

Re: Demag TC 500 truck crane in scale 1/24
 

Great project! I always loved crane trucks.
Never looked too much in to details but I wondered how the real cranes extend the boom? I guess big telescopic hydraulic cilinder?

Re: Demag TC 500 truck crane in scale 1/24
 

I wish it was me!

This looks like the Liebherr LTM1500 without the upper. Nice!

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

The Demag TC500 is a conventional crane. The boom sections are explained in this picture:
https://c2.staticflickr.com/6/5477/1...30ace248_b.jpg


Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

Some progress on the boom.
These are the ends for the boom sections. It took some work to get them straight, square, parallel and true, etc. , but the preparatory work paid off.

https://c2.staticflickr.com/4/3929/3...fcf17ef7_b.jpg

These two pictures show the setup for the assembly of the boom sections. Once set up it was a matter of fitting the laces in and soldering them. I made five 12 meter (40’) sections. With the butt and the top I will reach 72 original meters, which translates in roughly a scale length of 10 feet.
My little cutoff saw was great for cutting the 3/32” laces.

https://c1.staticflickr.com/5/4187/3...a9034f67_b.jpg
https://c1.staticflickr.com/3/2874/3...dd86f120_b.jpg
https://c1.staticflickr.com/3/2902/3...ee2036d2_b.jpg

Each section took about 3 hours to solder together.
This is the result. They are not perfect, but good enough and the boom is pretty straight.

https://c1.staticflickr.com/5/4180/3...0dac5555_b.jpg
https://c1.staticflickr.com/5/4157/3...eefc18c8_b.jpg

Next the butt and top section.

Kerst

Re: Demag TC 500 truck crane in scale 1/24
 

Kerst, amazing planning and workmanship, as usual. It takes a lot of patience to this kind of fitting and soldering - great job!

Ken

Re: Demag TC 500 truck crane in scale 1/24
 

Very nice job Kerst how much weight do you think you will be able to pick up when you get done? Ed

Re: Demag TC 500 truck crane in scale 1/24
 

Kerst, did you chamfer the ends of the laces or just cut them square prior to soldering?

Re: Demag TC 500 truck crane in scale 1/24
 

Stunning

Re: Demag TC 500 truck crane in scale 1/24
 

Those look great!

I love the jig solution you used

Re: Demag TC 500 truck crane in scale 1/24
 

I cut them at an angle to fit the main chords, but I didn't mill them round. it worked pretty well this way.

Kerst