Chris grade 5 titanium is 70 € (about 57 pounds) for every kg, not counting the cost of cutting.

Alex, the next robot will have sloped front and sides, so is grade 2 good enough for non spinner battles?

In a 4wd robot with a motor on each wheel, if I put a belt and link the wheels on each side, is going to be better than without the belt?
The idea is that if the front or the back is lifted, i still have the power of all 4 motors.

Plus:

Made the side pannels on the ant:
IMG_3126.jpgIMG_3127.jpg
But, as expected, is overweight by 8 grams:
IMG_3125.jpg
Everything else is completed, I only need to bring it to 150gr.

And are roller skate wheels good?
Because I found my old skates, so I have 8 of them:
IMG_3128.jpgIMG_3129.jpg
The diameter is 76mm.
A problem could be attaching them to the motor axle.