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5434 mk I

Monday 8 February 2010, by Atros

See it online

Technical data

Scale (wheels used)
Width 24 studs
Total Weight 2170 grams
Transmission 4x4
Motorization 2 motor(s) - NXT

working fake motor
Steering motor

with steering wheel
Onboard Battery Box NXT

Maz 5434 mk I

This was my second trial truck. It was built from a scratch as the first one (Star 1144) turned to be unsuccessful. Maz was much faster, failure-free, and looked way better.

Maz 5434 mk I - chassis

It had pendular suspension based on turntables, but used shock absorbers were too soft and because of it the stability suffered. It was equipped with portal axles with 3:1 gear reduction. The overall gear ratio was 5:1, so it was quite fast. I was very happy about the place where I placed the NXT brick - behind the second axle, low over the ground and at the angle that allowed to slip from things :).

Truck was also equipped with the winch driven form the driving motor.

The biggest innovation about it was the way it was controlled. I wrote the program for mobile phone that sends simple commands to NXT brick via Bluetooth connection. On the brick there was another program in Java language (written using LeJOS) that receives commands and controls motors. It hadn’t limitations that FunkNXT did and I was able to steer motors completely independently, but sometimes it hanged up, even during the races.

Brickshelf gallery

Truck can be seen on the following video at the beginning:

Maz 5434 mk I on GPM 2/2009

View online : Brickshelf gallery - Maz 5434 mk I