ALL TERRAIN SKATEBOARD! (Patreon)

Hi everyone!!

Do you remember that proof of concept tank skateboard that I built a few months ago? I made it better!! 

The original design proved the concept but also showed a few flaws that needed to be addressed so I fired up the 3D printers and made a new iteration.

This time I go to test it in real life conditions and it is awesome! Both front and back trucks are mostly 3D printed but this time I custom machined an aluminium plate to mount the motors so heat is dissipated better.

--Side story--

Did you know that the motor mount should have been made out of aluminium since the beginning? that's what started the second series of CNC videos. I couldn't mill a successful part with the old version and decided to make a new one.

-----Sub side story----

Did you know that the reason I wasn't able to machine a successful motor mount wasn't an issue with the CNC but a faulty stepper driver? by the time I found out I already had made a better version, so ended up being a good thing.

-----End of sub side story----

In the meantime I made the plate out of plastic which is a horrible material to mount a 4000 watt motor. 

----End side story----

I reused the idlers and treads from the previous version because those worked fine. I saved a couple of hundred printing hours right there.

I made a new board that is now the right width and a bit longer than last time and made two new chassis profiles and both worked perfectly as there are no collisions between the chassis/board and the two trucks even when going through rough terrain. With every project it seems harder and harder to push back the date when I get a welder, bending those profiles seemed wrong (they ended up working perfectly anyway).

Each truck has is own motor/VESC/battery and there's a wire that brings the RC receiver signal from the front truck, where the receiver is installed, to the rear truck so both trucks move at the same time. I have no idea how fast it is, not a lot but in the other hand I felt no loss of speed at any climb rate, I know it does not show on camera but some of those hills were pretty steep. I feel like it would have made no difference if four people were standing on it when going uphill. I was running the motor with 24V but it can go up to 48V and the ESC was running on BLDC mode with all sensors and limited to 60A but it can go 100A no problem so It could be a good idea to go for less reduction. I also have the speed limited in the VESC configuration so it does not explode, let's not forget that all of it is 3D printed PLA and if pushed hard it will disintegrate.  

This project is not over, I want to make it faster and probably I want to ditch the 3D printed plastic for something more reliable in the long run as this is becoming more and more a sport I want to practice. All terrain skateboarding to the olympics!! 

When it is a bit more polished I'd like to release it into the wild for free as I feel this could be a really fun weekend sport, like a OneWheel but capable of going up and down steep hills. 

As always comments are welcome and appreciated, enjoy!!!