outsmart the friction?!

[IndySam]

If you can't drop the center wheels you can purchase two omni wheels or use lower friction wheels on one end of the robot.

As much as I like to blame programming for everything, this isn't their fault

[Alan Anderson]

If you can't easily lower the center wheels, try adding thicker tread to them. That'll have a similar effect. The resulting very slight discrepancy in rim speed between the outside and center wheels shouldn't be a problem in practice.

[Racer26]

Yup, this is one case where programming can't solve a hardware problem.

The electromechanical system isn't operating in a manner capable of dealing with the frictional influence from the floor. That has to change.

[aya94]

Thank u guys!! U have been great help ,and yes as a programmer i couldn't think of anything to fix the matter ,now we know better ,we will try lowering the central wheels or perhaps change some of the outsider wheels ....