[MOC] Pneumatic Excavator

[shimon]

Hello everyone! 

This is my attempt at making a pneumatic excavator.

It all started with an idea for a modular switch array (I don't like messing with tubes), and after a few days of trying stuff it ended up like this. 

The main challenge was to fit a motor and a battery box in such a small area and I am pretty happy with the results.

Please let me know what you think.

Edited October 30, 2020 by shimon

[Mechbuilds]

If that ain't compact, nothing is. 

[JintaiZ]

Excellent build!

[jorgeopesi]

Great build.

[shimon]

Thanks everyone! 

A sneak peak into the internals: 

[chlego]

This is so clean! Well done!

[WvG_853]

I realised the small size only by looking at the tracks. Truly impressive!

[keymaker]

I'm not a fan of pneumatics in practise, but it looks great and with this scale, even better.

[trekman]

Really nice neat build there and super playability.  I just wondered how many mini pumps are you using, and is there any pressure relief or auto switch off - especially if all the valves are in neutral. 

[1gor]

Very good use of limited space 

[shimon]

Thank you for the comments guys! 

On 10/31/2020 at 8:01 PM, trekman said:

Really nice neat build there and super playability.  I just wondered how many mini pumps are you using, and is there any pressure relief or auto switch off - especially if all the valves are in neutral. 

I am using 1 mini pump so there is really no need for pressure relief, but you can always attach a hose with a bent end so that it releases air when the pressure is high. 

[Jundis]

What a great build!

The playability looks superb.

[KevinMD]

I will echo what others have said- incredibly clean, in a compact package. Looks fantastic. 

[proran]

Such a nice build! Packing three switches with all the tubing in small space is tough. My only tiny suggestion is that the first section of the arm looks too thin. I would add some meat in the middle. But it’s only for looks, mechanically it looks perfect. 

[AFOLegofan66]

You did a great job on this excavator. Very compact for the functions!

[steph77]

When looking at your model, and video, it makes me travel into time

Back in 1984, it reminds me this wonderfull feeling when i received this:

Thanks fort that.

And great job, by the way!

S.

Edited November 4, 2020 by steph77

[shimon]

Thanks everyone for the comments! 

On 11/3/2020 at 4:28 PM, proran said:

Such a nice build! Packing three switches with all the tubing in small space is tough. My only tiny suggestion is that the first section of the arm looks too thin. I would add some meat in the middle. But it’s only for looks, mechanically it looks perfect. 

 

Thanks! I will try to add some curved slopes to the first section. 

[wguarnere]

I love your compact version. is it possible to have instructions or a list of parts?