Telehandler with RC-Pneumatics, RC-Tool-Change and a total of 8 RC-Functions

[Tobi Wankenobi]

I always wanted to see how remote controlled pneumatics can be applied in a model. A telehandler is suitable, as there are auxiliary functions, where pneumatics are ideal for. (And I like telehandlers anyway :-). In addition,I  wanted this model to be realy playable. Therefore speed of the different axis was one of the main development criterias. If things are moving too slow, it is only half the fun... All the movements in the video are original timed.

Technical insights:

The model is build with 2 Powered Up Hubs, 7 Powered Up Motors and controlled with my Universal Vehicle Controls. 

2 XL-Motors:

One motor for driving: 4 wheel drive
One motor for lifting/lowering the boom. An extra rubberband is mounted to the boom to serve as „counterweight“. This allows to move the boom quicker as more of the power of the motor can be used for movement instead of fighting gravity.

5 L-Motors:
One motor inside the boom to change the angle of the tool. The motor is located in the lower part of the boom, to create the least possible load, and is moving with the front part of the boom, when extended.

One motor for steering: 4 wheel steering

One motor driving the compressor, which consists of 4 small pumps. To run it as smoot as possible, the working angle of all pumps is 90 degrees shifted.

One motor to shift the gearbox to select the correctt valve to activate. Its a 4 way gearbox.

One motor to actually activate the valves

The 4 pneumatic functions are:

Extend the boom: the extension is not as far as I wish to, as the stroke of the piston is limited, but is working smooth.

Coupling/Decoupling the trailer.

Fixing the tool after a tool change: The piston is mounted floating, means not fix mounted on either end. Tools chan be changed completely remote controlled.

Additional pneumatic function for special tools. These tools (like a gripper) cannot be changed remote-controlled as the pneumatic tubes need to be connected as well. But once mounted they offer an additional remote controlled function. The gripper tool is especially handy, as a lot os special items can be moved, which cannot with other tools. (And yes, I tried to make a tool change, which allows the pneumatic tubes to be connectes automatically as well. I almost succeeded, but it was not working reliably, and it almost killed the whole project)

 

The gearbox which is driving the 4 pneumatic valves:

 

Tool Adapter in both, open and closed state:

Open (Tool can be changed):

 

Closed (Tool is mounted and work can be performed):

 

 

[1gor]

i saw it few days ago on YouTube, but first impression was that model is very heavy (bending suspension arms on front axle). although there is nice paneling on model (gray cylinders would be better suited here IMHO)

Edited December 31, 2022 by 1gor

[A_Dilophosaurus]

This is insane! Great job!

[2GodBDGlory]

Yeah, I'm very impressed with this MOC. It looks very playable, and I do love that controller idea!

[Davidz90]

I don't know what is more impressive: the telehandler, the control panel or the skillfull driving!

[Paul B Technic]

Awesome, this is amazing.

[Tobi Wankenobi]

On 12/31/2022 at 12:55 PM, Davidz90 said:

I don't know what is more impressive: the telehandler, the control panel or the skillfull driving!

I guess, I still can work on my driving skills... But you really feel, how you get better and better with every time you run the machine...

A question to those people controlling their vehicles with a mobile phone / touch-screen: Do you also feel the improvements in operating skills after some practicing? Or is the "tactile" feedback from the handlers essential to get better and better?