1/10 Liebherr Excavator R 984 Litronic

[JAMMER]

Markus I will have to say it again excellent work. Your getting closer to the dig. Ed

[Markus K.]

Thank you, Ed. But I've to go a long way to the end, remember, this project started in September 2011. But I think it's going down the hill!

We come closer to the bucket but first I'll show up with the OilQuick120 quick coupler. Fortunately I was supported from the manufacterer with a drawing and some really good pictures. For this I had to made some really small double-acting cylinders. First tests with compressed air were successful.
Half of the parts were lasercut parts, the others were milled/ premachined by Michael. First I drilled the 1mm holes up to 1.3mm for tapping with 1.6mm (I'm proud to tap 48 holes without breaking that little sucker). Later there will be screwed covers whitch will hold the bolts in place.
The cylinders are simple brass tubes with the head soldered in place. Then I did some internal lathe work for the o-rings on the front and for the lockring on the backside. Really simple made.

[Markus K.]

After this a lot of tig-welding and some sandblasting. The last picture shows how the locking bolts locks the bucket.

[avel]

That planetary is a thing of beauty. Keep the updates and pictures coming.

[Markus K.]

Hi folks,

@Avel: thanks for your comment!

@all: I know you're all waiting for bucket-pictures. Well, here they are, but it´s not finished yet. There´s a little more welding to do, but I think it´s recognizable.
The teeth are sandwich-made using two halfs of lasercut sheetmetal, each 10mm thick. Could be the canines of a grizzly The knife is 12mm and needs some milling first (like the teeth).

[Markus K.]

and the next ones. The bucket without the knife is for my college Michael, he's got some different teeth (toothcarrier and crown). Anyway, he did a great milling work.

[Markus K.]

Here the last ones, just a simply size comparation.
Have fun while watching!

[JAMMER]

What a monster this going to be. You have done some great work on the buckets lots of fine detail. Great work. Ed

[Lil Giants]

It's just incredible that you can fit a gallon jug into the bucket... that model is gonna be just massive! I can't wait to see the pictures of you standing next to the finished model!

I thought your colleague Michael was building a front shovel?

[Markus K.]

thanks for your comments!

it's even more than a gallon! Today I was a little scared by myself , I put the stick on the bucket. The phone right next to it is a usual size.

No, Michael builds a backhoe attached R9100. Here two pictures showing the stainless steel laser-sintered toothcrown and the knife. Markus

[Lil Giants]

Your 1st pic with the stick & bucket, drop that assembly on a scale, let's see what it weighs... then how about a pic with you standing beside it for a size reference?

[Trucker_Jo]

Wow this thing is going to be massive! Very nice looking build so far

[Markus K.]

Hi there,

long time nothing new and sorry Joe for don't answering your question earlier. About the weight of this assembly, I didn't use a scale but CAD says round about 15.2Kg

I wanna continue with the chains, they are already finished several month ago. Each chainlink is made of 14 parts: a right and left side part, a small tube, a second tube used as a roller, the bolt, the shoe, four screws and four selfmade! 4-sided nuts. The side-parts and the shoes did my buddy Michael, I did all the tubes, bolts and nuts on my lathe (200 bolts, 400 tubes and 800 Nuts). Simply check out the pics!

[Markus K.]

the small tubes were pressed into the side-parts, receiving the roller-tubes first. Then connected with the bolt through the small tubes, the bolts were loctited into the left side parts. The last bolt is secured with a little worm screw placed under a chain shoe (1.st picture). As a reminder for the invisible chain lock there is a small center boring in the lock bolt.
The shoes were made of steel while the side parts were made out of aircraft aluminum.

[JAMMER]

Markus the bucket weighs 33.5 Lbs you are going to need a crane to lift it and move it when it is all finished. Excellent work and a lot of detail it's coming along well. It ought to be able to move some dirt when finished. Ed

[Markus K.]

Ed, the bucket is 'just' about 16 pounds, 33.5 pounds includes the stick, cylinder and quickcoupler together. Remember pic no 1 in posting #66. Markus

[Lil Giants]

Painstaking work on them tracks Markus, but no doubt they work perfectly.

What tell tale mark did you make to find the connecting link bolt within the tracks to find it easily after entire assembly has long since been completed?

[Markus K.]

Joe, this last bolt received a small drill mark with a center drill on the lathe. Just find this one and remove the pad.

first i cut off all cubes (4.5 by 4.5mm) with a parting tool; then I used a homemade chuck for finishing one ofter the other. It took me round about 2 minutes/ average per nut - over 26 hours total! The tubings and bolts were a piece of cake compared to this!

The chain is just thrown over the beams for the picture, the rollers are missing here. With rollers in place the chain got more tension, there is less hanging as you can see here. But it's recognizable.

[Lil Giants]

The 4th pic, is the tabletop a meter square?

[Markus K.]

no, it isn't. The side you see in pic #4 is 80cm. The tracked beam is about ~650mm in length. The table in this picture got a tabletop length of 125cm.