Jump to content

Recommended Posts

Posted

Yes it is. I decided I had been struggling long enough with this MOC :blush: To make it 4 wide I would have had to redesign the whole boom and its attachment points, including the transfer of the boom extension through the main hinge point that I have been working on for a very long time - I wanted to finish :grin: I will use the more narrow boom maybe for a future project!

Posted (edited)

Nevertheless your crane is great, considering the dimensions of the model!

I would easily believe if some one told me this is an official Lego set!

Edited by Yevhen
Posted (edited)

Thanks for the kind comments!

On 10/28/2018 at 3:40 PM, MangaNOID said:

Do you think you will be doing instructions like you mentioned before?

I might, if there's enough interest :classic: 

Edited by Ludo Visser
Posted (edited)

I finally managed to make some better photo's (more on Bricksafe):

800x600.jpg

800x600.jpg

800x600.jpg

800x600.jpg

800x600.jpg

800x1067.jpg

Here's a small video demonstrating the synchronisation of the boom extension/retraction with the cable spool. I used a motor for smoother motion, also because the gear reduction is a bit too much (lots of rotations needed to unwind the spool). The gear reduction is ok for boom extension and is perfectly matched to the unspooling rate, but for just hoisting up and down it should be a bit faster - for a bigger model I would include a second gear box to switch speeds probably (linked to the first).

I downloaded stud.io to see what that's all about - let's see if I can make some nice renders and maybe instructions...

Comments welcome! :classic:

Edited by Ludo Visser
Posted

 Nice! How does the superstructure fare with the boom at a lower angle? Any tilt? I'm revisiting my own mobile crane and having some trouble counterbalancing.

Posted
4 hours ago, I_Igor said:

Very nice :thumbup:

Thanks!

20 minutes ago, jwarner said:

 Nice! How does the superstructure fare with the boom at a lower angle? Any tilt? I'm revisiting my own mobile crane and having some trouble counterbalancing.

Thanks! There's no counter balance weight, so at lower angles there is some tilt forward and rotating it can get it stuck at the edges of the fenders of the carrier. But this only happens with the boom fully extended at near-horizontal, or with a significant load on the hook. I guess I could have designed to have only smooth edges at the bottom, but I didn't think of that. I'm happy with it though - it's very playable! :classic:

Posted

I tried using non-Lego weights to balance but I needed way too much to make any difference. I agree, playability is the most important aspect!

Posted (edited)
On 11/11/2018 at 12:17 PM, Ludo Visser said:

I downloaded stud.io to see what that's all about - let's see if I can make some nice renders and maybe instructions...

This has come to a great finish! Like others pointed out, this could be a real set.

If you need help converting from ldd to stud.io, you can pm me.

Edited by Didumos69
Posted

Thanks for the nice comments!

On 11/12/2018 at 5:47 PM, Didumos69 said:

This has come to a great finish! Like others pointed out, this could be a real set.

If you need help converting from ldd to stud.io, you can pm me.

Stud.io seems to work very similar to LDD, fortunately. Most key shortcuts are the same. The snapping is not as accurate as in LDD, and also the collision detection isn't, but on the plus side: gears just fit, no need to rotate them just little bit just to make it fit :classic:

I'm only missing a quick way to export an image... like the screenshots in LDD. The only way I can find to export an image is rendering, which takes quite some time.

  • 2 weeks later...
Posted (edited)

Well, that took a while:

small-crane-render1.png

1235 parts, more than I expected.

I added the model to my MOCs on Rebrickable, if anyone is interested. The Stud.io model is also on Bricksafe. Note that the Stud.io model is not really stepped: it has two steps: carrier and upper structure :grin: 

Edited by Ludo Visser
Posted

Turned out very good, nice crane, it is very deceiving having 1200+ pieces. I think the only things I would change would be to put some kind of feet on the outriggers and more extension on the boom, none the less great job on this one. 

Posted

Thanks!

I'm not too happy with the outriggers, they're a bit flimsy, even though they can lift the whole thing of the ground. As for a second boom extension: I tried, but it became way too bulky for this scale.

I don't know where all the parts went. A lot of connector, I guess...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...