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.

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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.

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(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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I am very sure this one will not float. Not as it is, however, but build can be rebuild :)

The first one can sail, I am sure!

Yes, it's ironic that Denmark should host a world wide climate conference, and completely make a mess out of it.. and get the hardest winther in many, many years :D

PS: Sorry about our prime minister, and the mess he made of the planet. He is not the one we elected, the real one got another jo as head of NATO, and then he just left us all the sudden, with this little fat and inkompetent guy as replacement! Quite unfortunate, if I may say so.

Hehehe Love it!

Speaking of thrust vectoring, check out this R/C plane and the slick maneuvers it's capable of :D

Oh yes; Brushless motor and Lipo Battery, with that combination you can make the sickest stuff!

Unfortunatly the RC I have the parts from is the old kind of both racing pack and motor.. But I do have another car with brushless.. maby that chrashes some day .. :)

 

Mine's all pre-brushless too. A few cars/trucks with nicads, a small heli and small plane with dainty nimh packs. I've still never successfully flown either of the latter. Blew up the plane's propeller just as I was starting to get an idea WTF I was doing, and flew the chopper into a fence before I even got that far (busted tailrotor and landing gear). Just got new propellers for the plane today, now I have to yank a couple servos back out of my biped to try it again ;)

I'm thinking I may need to break down and get a lipo+brushless setup so I can build planes from scratch easily (yay foam!). Heard a couple good things about this combo (mostly like "good for the price").

I recently went to a local rc airfield here in socal and witnessed the most insane flying i'd seen with a simple pusher plane that used a brushless motor and foam core body. The thing was lightning fast....I think the setup was around 150 for the plane, and parts less the radio....
what kind of materials did you use for the sledge part? the gray and white stuff/thingys.

humongous knitting needles !

(sold in that kind of shops / hobby stores)