reverse of motors NOT working please help [Archive]

Stillen

11-02-2006, 18:10

Our team is using the standard two motor LARGE cim setup with the kitbot tranny. Our robot drives forward fine, drives backwars fine. When we go to spin around or do a 180 (one motor going forward the other backwards, we have a ton of resistance.) We are using the standard two joystick method for the controls. The drive train doesnt seem tight at all, its only a problem when we are running the motors in opposite directions... Any suggestions??

thanks

STILLIE

Allison

11-02-2006, 18:22

it is quite possible that the load that is being placed on the breakers is higher than 40Amp...I would suggest listening for a popping/clicking noise coming from the breakers if you hear this that may be your problem. If this is your problem you may need to find a way to reduce your friction while turning.

Conor Ryan

11-02-2006, 18:26

Watch the breakers, make sure they are 40 amp
Raise the gauge of the wire
Read http://www.chiefdelphi.com/media/papers/download/144 and see if you can make your robot turn better

sburro

11-02-2006, 18:30

Our team is using the standard two motor LARGE cim setup with the kitbot tranny. Our robot drives forward fine, drives backwars fine. When we go to spin around or do a 180 (one motor going forward the other backwards, we have a ton of resistance.) We are using the standard two joystick method for the controls. The drive train doesnt seem tight at all, its only a problem when we are running the motors in opposite directions... Any suggestions??

thanks

STILLIE
more info as to what type of drive you have. 4 wheel drive, 6 wheel drive 2 wheel drive. we can help better with this info

Jared Russell

11-02-2006, 22:05

(assuming 4WD) You can:

-change treads/tires/wheel design on two or four wheels to reduce traction
-use a castor on a piston to prop up one end of the robot when turning
-reduce the gear ratio to all motors to give more torque