am makin a robot n i got a question bout wheels?

Question

am makin a robot that ll b movin with 6 wheels (4 rear ones n 2 in front for steering) anyway i was askin whetehr 2 make the 2 rear axes rotate in order 2 maintain stability n faster speed or it wont make any difference n make only 1 axe 2 rotate

can u help me with that n explain 2 me ur answer...pls!

Answer 1

I would think that one axle would be sufficient. If one axle rotates slower than another, the net result would be slower, and your wheels will be fighting each other. Your maximum RPMs will dictate your maximum speed. It will also be less complicated to rotate one axle.

Think about it this way: A car with four wheel drive that goes around a corner will sometimes "hop," this happens because the wheels are not all moving at the same rate.

Answer 2

in my opinion it depends on the way u control it
if u have a good PID control system and a good feedback u can use two axis and i ll still get the number of RPM u want and u ll robot will b more than ok cuz the motion will b like hovering

another suggestion : using two axis in the rear gives u one more degree of freedom, so in front use "roller custers" or better "bearings"