How are the 2 XL motors and the sprocket gear connected?

[Speedster4006]

Hi, I am very new to technic and my first project is a tank only for travelling on dirt. I would like to know how this creator manage to power the sprocket gear by placing the XL motor this way. Thanks!

[doug72]

Probably each XL motor drives one track via a right angle gearing, so you can be able to run each track at different speeds to steer the vehicle.

Not the best solution, a subtractor steering set up is much easier to steer using a train PF controller.

[Speedster4006]

3 minutes ago, Doug72 said:

Probably each XL motor drives one track via a right angle gearing, so you can be able to run each track at different speeds to steer the vehicle.

Not the best solution, a subtractor steering set up is much easier to steer using a train PF controller.

Ok I think I will research more on subtractors. But for this setup, do you think it uses worm gear or bevel gear?

[doug72]

9 minutes ago, Speedster4006 said:

Ok I think I will research more on subtractors. But for this setup, do you think it uses worm gear or bevel gear?

I suspect worm gears but cannot see if it is.

[Speedster4006]

3 minutes ago, Doug72 said:

I suspect worm gears but cannot see if it is.

Alright thank you very much!

[Carsten Svendsen]

It's not wormgears, this is 100% 

XL -> z12 -> corner -> z20 -> sprocket

As you can see the 5x7 frame is in the way of the XL motors output. This means in order for it to be a wormgear, the gear on it will have to be either z8 or z12.

If that is the case, then that gear would have to be in an odd position with 0,5 stud adjustment, furthermore, you'd need a connection from that to the sprocket which can only be accomplished by z12 + z16 which is doable, but remember that you're also 1 to 1½ stud away from the vertical axis which would mean you'd have to use a gear ratio that doesn't fit between the frame and the XL motor it self.