Let's Make Robots!

Trata II - The destruction! (Thanks Jip!)

Moves faster than Trata, on snow and ice

Update: Thank you for asking me to make a jump with this, jip. Now both Trata and my camera are broke. (Last video) - But hey - Snow is melting, who needs Trata any more? Time to rebuild!

PS: Jumps with things that are driven on a high placed force makes ugly jumps!


I just wanted to play some with the original Trata, that I made the other day in 2 hours. I picked up some materials, and oops, I made a Trata II instead :)


I tested it in the evening, on hard snow, and it was very fast and fun! In winter time we don't get a lot of day/sunshine-time, so it is always a quest to find time to shoot video when it's not too dark (like on Trata I)

Next day / today, I was going to shoot a good video.. but we got like 30 CM of loose powder snow! And it is not made for that, it just falls through and get burried.

So there is only a pre-video for now, I have to wait for the weather to change, or the snow to settle a little..


Theory is this:

Below is shown where the point of gravity is. It is supposed to be way back. I want it to allmost stall / have the front very light, so it can take the roughher snow, and lift itself up.


If this should be too much, I have placed some sticks at the back to prevent it to flip completely over, and let the propeller hit the snow.


(Yes, the propeller is broka enyway on the pictures :) It was a late night test run, and happened because the servo fell off. Not enough hot glue! (And too few wirestrips)

Now, IF it should not lift itself over some pile of snow, I do not want elsectronics to dive in, so this upside-down deck was placed in the middle, as a "sledge". 






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2 big knitting needles that my wife did not use any more.

Some old plastic tube, some metal wire, and some sticks and wirestrippers.

Top it up with the guts from a crashed RC car (Remote, Servo, Motor controller and motor) - and add a propellar, bought in a small local hobby store.

GEES!! what did she knit?!?!!?  :D

You know - womens magazines - "You should try this really nice thing".. she tried, and I got the sticks :D

However, as written somewhere else, I have seen these in knit-hobby-stores (that I of course visit all the time :D) - they should be easy to get hands on.

Hi Frits,

Cool thing you made but it hardly only costs $4 to build since I would suspect an LM406FB speed regulator and an R/C receiver wrapped in the plastic and plus the racing pack, servo and what appears to be a 540 sized motor. If you don't count all the stuff used to build it the price info is kind of worthless for others :-).

Would be cool to see some videos of it doing some stunt jumps or something like that. Build some snow ramps!

- Jimmy

Now I have a video camera without sound, because it got snow in it.

And a completely destroyed Trata II!

Final video shows parts of this destruction :)

Now I dare youto make a ramp for Tiny Tim!

Hey I can't help that you are a bad driver :-).

I will let Tiny Tim do some jumping soon then... Hopefully I will be able to steer a little better than you, hehe. RIP Trata II.

Actually steering is no problem. It is the filming it at the same time, that makes it complex :)

Well, I used a crashed car. I only boght the propellar, that's the USD 4.

My idea was to show some fun that one can have when an RC is broke - that was my project anyway; I have several crashed RC cars, but everythiong but the car itself is in fine conditon. I even got some from others, so the poarts are free for me. Excecpt for the propeller.

It's quite hard to shoot videos, because I use 2 hands to control the thing. Also I dont know if this would do well on ramps, I didn't build it for anything but what is shown on the video :)

Wow! This is COOL!!! :D It is quick and agile. I was thinking maybe you could tie one of those stripes they use in free calisthenics to the back of Trata? I imagine it could be interesting effect, maybe even write "8" in air... :)
Just seen the soft snow video, it's amazing how the Trata flows and goes over the snow! Good work!!  ;)
Must find a way to put my hands on a brushless motor  :)