Changes made since version 3 :

+ lattice boom structure like on crawler cranes
+ string (yes, string)
+ Ackermann-like steering (almost; still needs a little human intervention to achieve)
+ stronger superstructure

So I found time and a new camera.  Here is the instructable.  There's also some photos of a 300g balance.  Yay!  I didn't bother doing a maximum testt - I wanted to see if it could carry anything at all.  Maybe you can test its maximum capacity? ;)

Inspirations to this model:

Supercar - steering and chassis
Picture of a crawler crane
Picture of a crawler crane
Crawler crane - booms
Lego Technic 8460/8431/8438 and 8421 - outriggers

Total number of pieces: 2046

Just like version 3, I made this "backward"; that is, I photographed it while I was taking it apart.  Also, pay attention to the comments in the photos.  Since there is no caption-option available (or I haven't found it), I have tagged almost every image.  If there is anything that still looks confusing, feel free to leave a comment.  As you can see, it's very lengthy, so make sure you have a lot of time.

It's kind of hybridized between a mobile truck crane and a crawler crane, since it uses the body of the truck but the crane of a crawler.  Perhaps in the next version I'll try to make it more truck-like with whatever K'NEX hydraulic technique I can come up with.


Step 1: Pieces Needed

Photos 1 and 2: You will need at least all of those pieces.
Photo 3: Piece count.
Photo 4: Rods
- 394 Green rods
- 236 White rods
- 254 Blue rods
- 60 Yellow rods
- 6 Red rods
- 1 Grey rod & 3 Black rods
Photo 5: Connectors, small gears, spacers:
- 23 Tan
- 4 ???
- 231 Grey (1 port)
- 20 Light Grey (2 ports, 45 deg)
- 55 Orange (2 ports, 180 deg)
- 62 Red (3 ports, 45, 90 deg)
- 30 Green (4 ports, 45, 90, 135 deg)
- 118 Purple Adapter (4 ports, 45, 90, 135)
- 171 Yellow (5 ports, 45, 90, 135, 180)
- 101 Blue Adapter (7 ports)
- 64 White (8 ports)
- 11 small gears (one must have notch)
- 151 Blue spacers (51 can be substituted by 17 Grey spacers)
Photo 6: Bigger gears:
- 1 Big yellow bevel gear
- 8 small pulleys
- 1 Medium bevel gear
Photo 7: Wheels
- 12 Large pulleys + Large tires
- 1 small tire
- at least 442 cm (14'6") of string
your method of attaching the rods so that they are fixed to each other is quite similar to how i did so with my K'nex orrery, very interesting...
<p>Sorry for the super late reply, but life got in the way and I haven't any new ideas pop up. I checked out your orrery (where I live, they call it a mobile; yours is probably a mechanical mobile) and I wish I had more of those orange peg pieces! It is similar; however, I don't have the central blue connector support. If you look at a tower crane, they use similar triangles. I suspect it is so that it doesn't bend easily; using purple interlocking connectors will make the connectors unlock under its own weight.</p>
really nice, K'NEX should make this an official set<br>eeehm, well they better don't, because it will have lots of stupid bricks and mini-knex.....
completely right,you cant even get a set from a non-online store any more, all they've done is made it more fiddly than it should be!!!!!!!!!!!!!!!!!!!!!!
<p>They should bring back &quot;Classic&quot; sets where bricks were nonexistent, and make new sets from &quot;classic&quot; pieces.</p>
<p>I made it!</p>
<p>Nice! Looks awesome!</p>
Not sure I have enough pieces, but this is too cool for not to at least try and make it! <br>Wish me luck!
alot of people call what youv called ??? yclips
Ah. Thanks. Wasn't sure what the official name for it was. I can see why people call them y-clips. Knex.com says &quot;Standard Black Rod/Connector&quot;. Might just go with black rod &quot;Y&quot; connector (or 人)
i like it but it took me 5 hours really fun ........................................................................................................................................... no steering but i put my own if you want to learn how to make steering better go to building tips on knex.com watch and copy the video if not i will post on youtube.com http://www.youtube.com/legodude4292001 it will be posted today if not next weekend on june 30th please subscribe:) <br>
Nice job - 4.5*
Made it - took a few hours, but tis done. Tis rather awesome, but the steering isn't as good as in the version 3.
Been thinking - how easy do you reckon it will be to change the steering in this, for that in the Version 3? Only problem i can see (at a glance) will be the front outrigger :/ - will have to look into it tomorrow
Thanks for building it!<br><br>Yes, the steering sucks in this one; putting the front outrigger there probably wasn't the best idea. The reason for the steering sucking is that I was going for something a real truck might have.
Ah right. I'm going to build the chassis and steering from version 3 and then try to change it so it takes the outriggers and the rest of the body from this one :)
great! 4.5 stars
Thats pretty impressive! =D

About This Instructable




Bio: I don't always make instructables, but when I do, I prefer to use pictures. Stay instructed, my friends.
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