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New ( offline )
Posts: 2
Posted: 2013-02-14 12:49 
 Post subject: Wheel mount
Hello,
I am trying to find a way to mount a wheel so that it is independent. I want it mount 2 front wheels that are not connected, so I can turn them independently. They will be free floating with no motor attached. I am planning on using these wheels http://www.robotshop.com/pololu-1090-wheel-1.html

Can someone point me to a wheel mount that will work for this?

Thanks


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Admin ( offline )
Posts: 978
Posted: 2013-02-14 13:04 
 Post subject: Re: Wheel mount
There are generally a few ways to steer a wheeled robot:
  • Skid steering (like a tank; can have 2 / 4 / 6 wheels)
  • Rack and pinion (like in a normal car)
  • Holonomic Motion (onmiwheels, Mecanum wheels)
  • Swerve drive (each motor can rotate and be controlled on its own - usually eight motors required)


Which method are you planning to use?

_________________
Coleman Benson

RobotShop inc.
Putting Robotics at your service!™
www.robotshop.com

Lynxmotion
Imagine it. Build it. Control it.™
http://www.Lynxmotion.com


New ( offline )
Posts: 2
Posted: 2013-02-14 13:07 
 Post subject: Re: Wheel mount
I want to use Rack and pinion. I am trying to figure out a way to make it work. I was thinking of parts like these for the base.

http://www.robotshop.com/tamiya-universal-arm-set-orange.html
http://www.robotshop.com/tamiya-universal-plate.html

But if you have a suggestion I would like to hear it.


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Admin ( offline )
Posts: 978
Posted: 2013-02-14 14:54 
 Post subject: Re: Wheel mount
Rack and pinion basically needs a servo for directional control, and a four-bar mechanism so each motor mount rotates the same (although on a real car the angle is slightly different to compensate for the fact that the turning radius of each wheel is different). We don't have a rack and pinion steering kit, but we have some options as part of other kits such as the Micro Magician and Buggy Car Chassis. Tamiya products are a great place to start for a custom solution.

_________________
Coleman Benson

RobotShop inc.
Putting Robotics at your service!™
www.robotshop.com

Lynxmotion
Imagine it. Build it. Control it.™
http://www.Lynxmotion.com


 

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