vinceherman:
Your design does get in the way of easy turning.
The long, skinny base has to do a lot of skidding to rotate.
vinceherman, if you read all comments and thread itself. Would you give me some advice/suggestion and help me to choose the right gear DC motor please ?
Shortly, which dc motor should you suggest me for my project from the given list at this link MOTION - Motors & Accessories - HD Premium Planetary Gear Motors - ServoCity? thank you.
And, the x4 tracks ( x2 at front and x2 at back ) are separated like my old design too; so should I use x2 dc motor or x4 dc motors ? thank you.