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LEGO models my own creation MOCpages toys shop W.I.P Tank, transmitionTechnic
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W.I.P Tank, transmition
About this creation

It's not much yet but it will be. This is more of a side project. what will make this tank different than most one I have seen will be the drive system. it uses double differential steering instead of simply having one motor for each track. this allows it to be controlled like a regular wheeled vehicle. There is a drive shaft input and a steering input. the gears on the top slow down one side of the track depending on which direction the shaft is turned. This also makes neutral steering very easy. simply turn the "steering wheel hard in one direction and hold it and it will neutral steer. Almost all modern tracked military vehicles use this kid of system, except there is usually a third differential between the steering gears that turns of the drive shaft. then to steer this system there is a brake on each side of the steering (3rd) differential to stop one axle to make a turn. When I was in the marine corps I was a crewman (driver) on an Abrams tank, and learned quite a bit about tanks and their mechanics, so I figure it is time to build one.

here is a link to an animation of this scroll down to the "double differential steering section"


 I like it 
  August 5, 2009
simple design, sadly youve not finished this yet. i made the same item fromt he picture for a skid steer. went adder subtractor for less jerky steering
 I like it 
  April 28, 2009
Clever design and much easyer to build than most other adder/subtractors.
 I like it 
  April 24, 2009
Very very clever. Enough said. These are the solutions that Lego should use in coming models. I would like to see more models based on real vehicles and a revival of the Kässbohrer snowmobile could lead the way!
  April 15, 2009
You never cease to amaze me. I can't wait to see what you do with this system! I tried to see the animation you linked to but all I got was slag video.
  February 24, 2009
Pretty slick set up. However I would suggest using knob wheels instead of the two 24 tooth bevel gears on the drive shaft... those half-width bevel gears slip more often than not
 I made it 
  February 19, 2009
Quoting Rob Deavers I decided to copy your design and try it out. Thank you!!! It works flawlessly! Again, thank you for doing this.
no problem.
 I made it 
  February 18, 2009
Quoting Michael D Whats it sopposed to be oh and i like your yellow truck!
Its a Transmission and steering system for a tank. it allows you to use one drive motor and a steering motor to control it like a regular vehicle.
 I like it 
  February 18, 2009
Whats it sopposed to be oh and i like your yellow truck!
By Tyler Reid
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Added February 18, 2009

LEGO models my own creation MOCpages toys shop W.I.P Tank, transmitionTechnic

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