Re: Liebherr LTM1800 scale 1/24
 

Wow! very impressive!!!

Re: Liebherr LTM1800 scale 1/24
 

Great work! Very impressive build. What kind of glue do you use for the Al and brass? Do you need to do any prep work to the material before you glue it?

Re: Liebherr LTM1800 scale 1/24
 

This is definetly one of the top builds going on, the time it would take even working daily for longer periods is asthonishing. So keep up the great work and I will stay tuned for the additional ...... years to finish it....

--Dan

Re: Liebherr LTM1800 scale 1/24
 

Nice model, impressive. Hmm, 10 years, sounds familiar.
Dan

Re: Liebherr LTM1800 scale 1/24
 

A little update. I haven't had too much time lately between vacation, work and a huge ice storm.
I mainly worked on the drive train of the carrier. I bought a 540 motor with a reduction case attached (No, I did not make it myself, i am getting lazy), which fits perfectly.
then i did a test run and it worked great with the 2 speed auxiliary gearbox, but it lacked a low low speed, it just went too fast for moving it fully rigged.
So I decided to add a gear box which I bolted to the existing one, giving the option of an extra 1 in 4 reduction and a total of 4 speeds. That should do it! It is almost ready, most of the parts are there.
http://img847.imageshack.us/img847/5...0315201191.jpg

Kerst

Re: Liebherr LTM1800 scale 1/24
 

Gearbox is ready. It provides me with the Low-Low I need for moving the thing fully rigged and also with a few faster speeds. There is a factor 10 difference between the lowest and the highest gear.
http://img819.imageshack.us/img819/9...d318201155.jpg
http://img861.imageshack.us/img861/5...r319201152.jpg


Kerst

Re: Liebherr LTM1800 scale 1/24
 

I LOVE GEARS!:eek: That is quite some assembly you have there!

Re: Liebherr LTM1800 scale 1/24
 

I made a short video of the first test drive. It is going in Low-Low with the motor running at full rpm's
http://www.youtube.com/watch?v=Zw_bQFV9amw

Kerst

Re: Liebherr LTM1800 scale 1/24
 

Wow that is really cool to watch. I don't think I ever saw a 1:1 version turning that tight. That really works nice.

Re: Liebherr LTM1800 scale 1/24
 

Very cool vid.

Re: Liebherr LTM1800 scale 1/24
 

Thanks for the comment, but there is some play for sure and the 2 rear axles are a bit out of line. They steer a bit too much to one side, but I will adjust that later.
Now I have to fix the motor in place, it was sitting loose in the carrier!

I am not very good with RC, but it would be nice to have it remote controlled, then I could drive it at full speed. In the highest gear it would go the 1/1 equivalent of about 12Mph. I am thinking of making a module that would fit in the upper in the space of the winches. These can be taken out and then there is quite a bit of space..

Kerst

Re: Liebherr LTM1800 scale 1/24
 

After I finished the gearbox I put it all together.
Although there are still a million details to be done it is time to work on the boom now. Exciting!

http://img836.imageshack.us/img836/4...01152005pm.jpg

kerst

Re: Liebherr LTM1800 scale 1/24
 

Exiting, I'll say!!!! It's a rush to see a well designed and engineered piece of machinery work for the first time, isn't it? Great work so far. Just unbeleivable. Dan

Re: Liebherr LTM1800 scale 1/24
 

While waiting for the AL sheets to arrive I made the 235-ton hook block. I had very little (none!) information to help me and I had to somehow get some measurements from pictures. And now it’s finished I think it is not quite right. I might change the whole thing again.
http://img705.imageshack.us/img705/3...8003428201.jpg
http://img862.imageshack.us/img862/4...8004282011.jpg

I also made a first mock-up of the boom, just to try out if it works. I am using 0.032” Al sheet. I bend the lower part and the upper part separately and then glued the two together. It seems to work and it is quite strong.
http://img269.imageshack.us/img269/5...01123406pm.jpg

Kerst

Re: Liebherr LTM1800 scale 1/24
 

Looking Good.
Did you say what Glue you used to glue AL.

TEXKEN

Re: Liebherr LTM1800 scale 1/24
 

just look at the picture in post #54, the bottles are standing in the back ground. It is really good stuff, very strong.

kerst

Re: Liebherr LTM1800 scale 1/24
 

this is the eBay store: http://shop.ebay.com/polymerproducts...from=&_ipg=100

Kerst

Re: Liebherr LTM1800 scale 1/24
 

Even if you're not sure about that 235 ton block, the craftsmanship on it is just beautiful.

Re: Liebherr LTM1800 scale 1/24
 

I would have to agree.. To the un"craned" eye you wouldnt even know. Very impressive so far.

Re: Liebherr LTM1800 scale 1/24
 

That's better:
http://img687.imageshack.us/img687/2...1201180351.jpg
I made the block about 1/4" shorter and now the proportions are better. I am happy now!

kerst

Re: Liebherr LTM1800 scale 1/24
 

Looks sweet!

Re: Liebherr LTM1800 scale 1/24
 

That is a jewel. Makes me wanna go machine something.

Re: Liebherr LTM1800 scale 1/24
 

That block really turned out nice Kerst. Do you think glue will hold up to time on that boom section?

Re: Liebherr LTM1800 scale 1/24
 

I am confident that the glue will hold up. the glue surface is large and the stresses are minimal there.

kerst

Re: Liebherr LTM1800 scale 1/24
 

For once I have the feeling that I made a lot of progress. I glued the 4 boom sections together and i am quite happy with the result.
As you can see there is still lots to do.
http://img694.imageshack.us/img694/5...5201121220.jpg
http://img705.imageshack.us/img705/5...side515201.jpg
Kerst

Re: Liebherr LTM1800 scale 1/24
 

WOW. amazing job

Looking really great

Keep the good job.

Re: Liebherr LTM1800 scale 1/24
 

I worked on the boom a bit. It is pretty straightforward, but I haven't had too much time lately. Here are 2 pictures of the progress i made:
http://img146.imageshack.us/img146/7215/img3081c.jpg
http://img843.imageshack.us/img843/2...7201124049.jpg

Kerst

Re: Liebherr LTM1800 scale 1/24
 

WOW... Amazing work!!! Really...

Re: Liebherr LTM1800 scale 1/24
 

Drilling the holes for the boom pins:
http://img546.imageshack.us/img546/5...6172011607.jpg

Kerst

Re: Liebherr LTM1800 scale 1/24
 

more than just perfect!

Re: Liebherr LTM1800 scale 1/24
 

Thanks for the compliments!
I managed to do a lot of work on the boom. All 4 sections are ready and the boom head is almost ready. Next is the telescope mechanism. I think it is going to be a variation on the single cylinder system.
http://img268.imageshack.us/img268/3066/img3138tu.jpg
http://img32.imageshack.us/img32/4030/img3140f.jpg
http://img135.imageshack.us/img135/1559/img3143q.jpg

I put it all together and tried it out. Here is a short clip: http://www.youtube.com/watch?v=CgFCE_C24eM

Kerst

Re: Liebherr LTM1800 scale 1/24
 

Whats to say but TALENT!!!

Re: Liebherr LTM1800 scale 1/24
 

Wow, what a beast.
Later, Neil#2 aka doodlebug.

Re: Liebherr LTM1800 scale 1/24
 

Wow man you have some serious talent and time

Re: Liebherr LTM1800 scale 1/24
 

i have maybe about 4 hours a week. It is my quality time, nobody around. Great! helps me to re-charge.

Thanks for the compliments,

Kerst

Re: Liebherr LTM1800 scale 1/24
 

really great looking build Kerst! All of the thought and creativity put into this thing is way beyond my ability, which makes it even more fun for me to follow along!

would you mind sharing where you got the tires for your rig from?

Re: Liebherr LTM1800 scale 1/24
 

I did a lot of fixing. there were problems with the electric feed through the slewing ring, the gearbox jammed and I fixed the main winch, which did not run smoothly. One of the outriggers was not working and so on.
I also started designing the telescoping mechanism. i will be using the oil tanks on the side of the boom to hide 2 motors, which will drive a single spindle, which will be able to rotate 45 degrees either way and in this way pick up one of the 3 sections, basically simplified way the modern cranes work.

I made a few videos, not great quality, but they show the first trials.
http://www.youtube.com/watch?v=ykWapUiaxGA
http://www.youtube.com/watch?v=prlzG1XcgoQ
http://www.youtube.com/watch?v=T6hGbbX0zFA
Kerst

Re: Liebherr LTM1800 scale 1/24
 

very cool... nice videos, this will be one piece everyone drools over

Re: Liebherr LTM1800 scale 1/24
 

Here another video, this time the crane is going up a ramp in low gear. The 16 x 8 drive is hardly sufficient.
http://www.youtube.com/watch?v=yXltOC-Ifas

Kerst

Re: Liebherr LTM1800 scale 1/24
 

pretty cool video.. awfully slow... how much do you think it weighs??