Thread: Problems with the stretcher?
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Unread 23-06-2002, 23:20
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#0047 (ChiefDelphi)
  
Join Date: May 2001
Location: Pontiac, MI
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Re: A couple techniques
Posted by JVN at 1/21/2001 12:38 AM EST


Student on team #250, GE Dynamos - Capital District Robotics Team, from Shenendehowa High School and General Electric.


In Reply to: Problems with the stretcher?
Posted by Chris Orimoto on 1/20/2001 10:57 PM EST:



hey-

If you lift the goal(s)/stretcher you add their weight onto the weight of your own robot, thereby
increasing the normal force exerted and greatly increasing traction. This method isn't very
practical if your trying to move the stretcher, but it works VERY well with the goals.

Other than that there are a couple of things we do to get better traction. Full track (tank treads)
seem to work pretty good. Also the drill-motors have decent gearboxes. If you are commited to
power/traction you might want to design custom gearboxes, just drop the ratios until you get the
amount of torque you want. ( i forget our ratios).

We haven't been having trouble moving the stretcher/goals... maybe some of that stuff will
help, good luck

~John


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