Arduino Forum

Topics => Robotics => Topic started by: Eagle3ye on Dec 13, 2013, 01:07 pm

Title: 2 wheel vs. 4 wheel
Post by: Eagle3ye on Dec 13, 2013, 01:07 pm
What is better for a sumobot platform?
2 wheel or 4 wheel considering the maneuverability,speed and I will be using it for a mini sumobot

Title: Re: 2 wheel vs. 4 wheel
Post by: groundFungus on Dec 13, 2013, 04:25 pm
I don't know Sumobot, but in terms of maneuverability, you can't beat a 2 wheel differential steered platform.  If the powered wheels are on the centerline it can turn (spin) in place (zero turning radius).    In terms of speed they could be the same.  In terms of stability I would have to give that to the 4 wheel bot.
Title: Re: 2 wheel vs. 4 wheel
Post by: terryking228 on Dec 18, 2013, 01:45 am
Quote
in terms of maneuverability, you can't beat a 2 wheel differential steered platform.


The 4-wheel versions are basically "Skid-Steer" like some construction equipment loaders.  LOST of friction, and very hard to turn on carpet etc.

The 2-wheel versions like the one HERE: (http://arduino-info.wikispaces.com/YourDuino-Basic-Robot-Kit) with a caster wheel have very low friction.

But in Sumo you do need traction to "Push The Other Guy" -- right??
Title: Re: 2 wheel vs. 4 wheel
Post by: joemcder on Dec 23, 2013, 08:56 pm
Sumos are commonly 4 wheel for stability.  The 2 rear wheels could be idlers without motors for 'casual' use.
Title: Re: 2 wheel vs. 4 wheel
Post by: drewdavis on Dec 27, 2013, 09:38 pm
If you look at all the great robots from from RFL there were 2 and 4 wheel whiners. It depends on what you are going for. Look up Biohazard and Team Nightmare.  That will give you an example of a 4 wheel and 2 wheel robot. Personally I like 4 wheel robots.