Let's Make Robots!

Trata III

Moves fast on hard snow and ice.

I couldnt help it, there was still snow.. i had a robot ready, just needs programming.. But every time I try to sit down at finish it, I make a new Trata.

Since this one has very flat sledges, it is very likely to cut sideways into snow and die, when turning / sliding on rough / soft snow.

I think it will be very fast and fun on hard snow / semi-ice. The kind that has melted a bit, and then turned into ice on top.

Just after finishing this, there was really crap snow; Newly fallen, and just about to melt. Soft and sticky!

But I had to test it anyway.. and.. well, I shouldn't have done that, see video.

They dont have any more of these propels at the shop now, but I will see what I come up with, hopefully in time before the snow is melted :)


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Looking cool!! Better luck with this one  :)
Seems you will get high speeds.. maybe some kind of aerodynamic wings on it would be a plus!
Thanks, yes.. I was considering small wings. Even had some ready to mount.. There is just something about it.. What trigs me here is to make that thing that slides over hard snow.. wings are just not part of the equation ;)

Have you thought about adding small skegs right near the end of the skis to give a bit of grip for turns



Thanks for the thought.

The point here is to slide, not to have a grip :)So I may not have understood you right, but if so, I think it is not a good idea, as I wantit to slide - that is how it is turning :)

However, I just added some "walls" on TOP of the sledges, to stop it from carving into snow when sliding. Because when it carves in, the propellar gets the snow on top of the sledges.

There is a lot to explain about these things, but I think I will just have to show you ;)


wow this last version looks briliant, where did you get those motors?

hehe i could try doing one of these, still have a two CH remote somewhere  

Yes, make one!

I got the motors (and the rest) from crashed RC cars :)

nice, the only rc i had was nitro, but i have a pair of motors that look like yours!

just have to adapt it to drive on water(no ice here, but a large lake)

props on the build! 

Its winter time, are we gonna see a Trata IV?


I started building a "Foamy-1", it'll have a puller type prop setup, and is made from foam/hot glue/string packing tape.


Nah, I think I officially have canceled the Trata-program :D

Wow, strange purple stuff you have going on there, that will be interesting :)

Yeah it looks weird, but its a high density (high R value) foam used for home insulation.You can get it up to 4 inches thick.

Its lite weight and pretty strong. Plus you can shape it easily, and if you cover it with foam safe epoxy and it becomes like fiberglass. It works really well if you want to make very strong 3D shaped (robot) parts.

I use a different brand of this stuff to coat it http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXPT46&P=0