Swerve/crab drive and tank turning

[activemx]

thanks Bill, Dave and other wildstang members.

Bill, yea i think you guys are being able to do tank turns because you had thin wheels. We have wide wheels and the creats sooo much stress we tried to turn. I think its just the fact of too much traction. We have couple of ideas and were gonna try them. thanks for all your help. if other teams tried to tackle the same problem please do post.
thanks
-Akshay

[Veselin Kolev]

Our wheels are 1.625" wide, with the cross hatch tred. Combined with the fact that we are geared to go 14 feet a sec and actually go 12 ft/s ,meaning we have no torque. We just stall the modules when tanking.

What I am thinking to do is get a small pneumatic cylinder with a caster on the end of it to pop down, not necesarily clear the 2 wheels, but decrease their traction. This way, we can turn with only 2 wheels and just spin around on that caster.

Thanks all on your input.