Saturday 5 June 2010, by
See it online
Volvo FL12 8x8
Truck features all wheel drive, 4 wheel steering with different steering lock, full double wishbone suspension, remote controlled 4-speed gearbox with neutral gear, working winch, working fake R6 piston engine and working steering wheel.
Vehicle is remote controlled by a mobile phone using Bluetooth connection. Both applications (mobile phone app and NXT app) are written by me in Java language (I used LeJOS to program NXT). Click here to see screen-shots from the mobile application.
Gearbox uses 2 driving rings to shift gears, each of them is controlled by one NXT motor. After shifting gear motor locks in a fixed position to prevent slipping off a driving ring. Gearbox design is similar to gearbox mounted in my Maz 5434 with the difference that is has 4 gears instead of 2.
Gear’s ratios are:
Gear 1: 18.75:1
Gear 2: 11.25:1
Gear 3: 6.25:1
Gear 4: 3.75:1
Two front axles are steered with different ratios which is 1:1,67 (z12 drives z20). System construction is strong, backlash is low and it is almost impossible to desynchronize axles steering.
Other movies with Volvo:
Volvo on other sites:
View online : Brickshelf gallery - Volvo FL12 8x8