Zerobricks

My messenger budy told me they are out of same rubber as 56 ones, so they sgould be a good choice!

The weight of the cehicle shouldnt effect the wheel trtaction, because the traction coefficient is same no matter the weight. It was a simple crude test, and i was quite surprised, how bad 8297 wheels performed.

This time I tested wheels, which have the best traction and which are more suitable for offroading.

This really looks awesome! The details, compactness and color combination!

I tryed smooth F1 wheels, and the result is the same At 3V the model skidded slowly down, but when i increased voltage to 9V it drove (bit jerky) up.

Thats really tight! How did you build the rear suspesnion, I never saw such spring orientation before?

The steering works quite simple. Both motors power a diff. The diff power the tracks and two brakes. When you brake the left side, the diff transmitts power to right. So basically I used the open diff disadvantage to my advantage.

Ok guys you impressed me! Im gonna try the same with smooth wheels to see if knobby wheels really matter. This is getting really interesting P.S. Rgbronw you are a phsysics teacher?

Thats great for annoying people Post a video once finished!

So I decided to check if speed of the truck does affeect its climbing abilites. In order to do so, the small 4x4 model was placed ona tilted plank and its speed was regulated. When the model was unpowered, it slipped down with a certain speed. In order to climb up, the speed on wheels had to be larger of its slipping speed. Here is a picture explaining that: And a very short video: You guys agree with my findings?

@Roamingstudio yes the technic pin kills the geomerty, you would need a brick like headlight one, so everything is in system. I managed to work arround this illegal method, and forced LDD to fit hair in there: http://www.brickshelf.com/gallery/zblj/LDDparts/illegalhair-2.lxf

I meant a clutch like this: There should be a second pulley wheel, and you can add 2L beams for less air.

Not clutch gears.... Self made clutch using beams and pulley wheels with no air.

This may sound funny, but what about using a kind of a clutch that can engage at a right angle to disenagage and engage at same positions, so there is no desync? Clutch could be as simple as a pulley wheel with few pins and a half 2L beam (++).

Your link is dead...

I wanted to try out the new(er) treads with RC motors. The only problem using RC motors is, the PF system isnt powerfull enough, so I used the RC unit, which has no independent control for 2 motors. In order to make the model steer, both motors power the tracks via a diff. Using two brakes, one for each side, the model can steer, and by blocking one side the other side spins with 2x the speed, therebye keeping the original model's speed constant. The differential was reinforced, because the 8 tooth gear tended to slip: Body details with tracks removed: Front tracks ends are lifted for better climbing abilityes: Tracks are supported by a total of 24 wheels per side. They are all suspended. The suspension has two functions, the usual bump absorbing and keeping the tracks tentioned. Watch the video for more details:

polywen, marcosbessa and TGping I am just wondering, what degrees you have? Good luck!

Nice use of pneumatic hoses as flex axles. Do I see flick missiles under wings? Good job!

Yeah I guess I managed to do an illegal conenction for LDD: But it works in real life. If you use rotation tool and spin a beam into the place of the stud axle, it will delete all conncted bricks to that brick...menaing you delete most of your model. Works fine with beams without crossaxles though.

Congratulations to all competitors. There are no losers, just builders who didnt get a reward :)

Good job, looks liek the original! How did you make the background?

What browser do you use?

Now that is just beautyfull! Color scheme is very organic too.

NEVER USE WD-40!!! It melts bricks. Use a silicon spray.

Thanks for the praise, you really think this could be a real crane design?