[TC22] Mecalac MCR-series skid excavator

[Rudivdk]

For TC22 I'll attempt a model based on the Mecalac MCR-series:

https://www.mecalac.com/en/machine/6mcr.html

 

The most interesting part for me is the multi-stage folding boom with left-right swaying function.

I intend to go full pneumatic for the boom, with RC skid drive and hand-activated motorized pump. Superstructure rotation will be manual. Space will be very tight... might sacrifice the cabin interior space for electronics.

This is what I got after two evenings in:

Tracks are motorized RC (2×M, skid steered), all pneumatic rams for the boom are installed (5). Tubing is WIP, and I need to get everything packed in the superstructure.

If I can't get it to fit, Plan B would be to omit the motorized pump (M-motor, PF switch, mini-pump), and install a manual pump.

It seems possible to squeeze it in a 15x25x25 stud box, which is just within the 10000 square stud limit for this competition...

Edited April 12, 2022 by Rudivdk

[Thirdwigg]

I drafted the same idea over the weekend. I'm happy you are going to do this project; it looks great so far. The movement of the arm is great at this stage.

[mpj]

I was expecting a Melacac excavator in this contest, and here it is!

In my opinion you should remove electronics (quite useless if the motized part are only the tracks and nothing else) so you can improve design of the turret and fit all the pneumatic tubes.

And also double check the range of movement of the bucket 

[Rudivdk]

3 hours ago, Thirdwigg said:

I drafted the same idea over the weekend. I'm happy you are going to do this project; it looks great so far. The movement of the arm is great at this stage.

Thanks, I'm quite pleased with how the arm turned out myself as well. Hardest part will be cleanly routing all the hoses without interfering with the joints...

2 hours ago, mpj said:

I was expecting a Melacac excavator in this contest, and here it is!

In my opinion you should remove electronics (quite useless if the motized part are only the tracks and nothing else) so you can improve design of the turret and fit all the pneumatic tubes.

And also double check the range of movement of the bucket 

I didn't really know Mecalac until I did some research, but they make great stuff!

Yeah the electronics are a bit useless, but I like the challenge of fitting everything, and seeing this thing race around is pretty cool (for it's scale and type of machinery, it's FAST).

The bucket linkage will be revised, it's a real quick'n'dirty WIP... I hope to make an easy coupling mechanism so attachments can be switched, like the real thing.

Edited April 12, 2022 by Rudivdk

[johnnym]

Impressive and quite packed, like the original!

[Jundis]

Great to see this in the contest, you gave me some ideas for my Mecalac MTX12 :D