Thread: Which motors should we use?
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Unread 23-06-2002, 23:03
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#0047 (ChiefDelphi)
  
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Re: Which motors should we use?
Posted by Jake at 1/16/2001 7:43 PM EST


Student on team #365, Miracle Workerz, from Avon Grove High School and DuPont Engineering.


In Reply to: Which motors should we use?
Posted by CArobot on 1/16/2001 6:14 PM EST:



The Drill motors have more RPMs and more Torque than the fisher price motors. M.O.E. (Our robot last year) used a dual drill motor drive and two casters. We were able to push with the big boys, when the time came.

As for the 6" vs 4" wheel, there is a trade-off. You could use the 6" wheel with a basic chain-drive system, so you could move around with some speed, and have a respectable amount of torque. I believe we used a 3:1 ratio of drive gear teeth to wheel gear teeth (might be wrong.. the ratios were never my strong point). If you want to go with the simpler direct drive aprotch (Putting the motor right into the wheel), I'd use the 4" wheel. It will give you more torque, where as the 6" wheel would make you go faster with less torque.

I would probably recomend the Drill motor with a chain drive to the 6" wheel. If you'd like some documentation on motor specs and gear ratios, visit our web site and get in touch with one of our engineers. They'd be happy to send you a packet of information on any range of topics.

Best of luck to you!

~ Jake

: We are going to build a robot that very closely approaches the weight limit and carries the tower. This means carrying 200 pounds across the floor on two wheelchair wheels and two trailing casters. Is it best to use the drill motors or the fisher price motors? four inch wheels or six inch wheels?


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