View Single Post
  #7   Spotlight this post!  
Unread 07-05-2012, 07:53
Nemo's Avatar
Nemo Nemo is offline
Team 967 Mentor
AKA: Dan Niemitalo
FRC #0967 (Iron Lions)
Team Role: Coach
 
Join Date: Nov 2009
Rookie Year: 2009
Location: Iowa
Posts: 803
Nemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond repute
Re: Mechanum Wheel Sizes

Quote:
Originally Posted by nxtsoccer View Post
Hey, do you guys think we'll need this: http://www.andymark.com/ProductDetai...Code=am%2D0279

It's a hex-bore ball bearing to fit the shaft of the toughbox nano, probably would be mounted on the other side of the shaft. On that note, are the toughbox nano's built-in bearings strong enough to support the weight of the robot, or would they need to be supported by bearings on both sides?

Eh, I think it's a confusing post.... Basically, how many (if any) bearings will we need other than the built-in ones to support the robot's weight without breaking something or unnecessary wear and tear? Any ideas?
You can go either way. In 2011 we bought the long axle versions and supported the opposite end of the shaft with simple blocks of plastic with 0.5" holes bored in them (we used the keyed versions). We liked that a lot. The disadvantage of doing that is that it's harder to get a wheel off if you need to replace it or repair it. Plus it is extra work to build.

The Toughbox Nano is strong enough to support the robot's weight. Of course, you want to put the wheel as close to the gearbox as is reasonably possible to minimize forces that would try to bend your axles.