Thread: Mecanum wheels
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Unread 08-01-2014, 16:33
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JVN JVN is offline
@JohnVNeun
AKA: John Vielkind-Neun
FRC #0148 (Robowranglers)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 2000
Location: Greenville, Tx
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Re: Mecanum wheels

Quote:
Originally Posted by Qcom View Post
Question: You mentioned the Vex Mechanums cracking in an earlier post. Where did they break, and was the break catestrophic enough to warrant immediate disabling of robot movement (i.e. could the robot finish a match if this occured)?
Someone mentioned that they had a VEXpro mecanum wheel crack, but did not provide any additional information. We've done a lot of testing here and not seen any durability issues. We've also not heard very many complaints from users about Mecanum wheels breaking.

We're very happy with how that design turned out, and are confident in the durability, especially in a game with a flat field like Aerial Assist.

If you jump a robot off a loading dock, will the wheels crack? Yes: Based on our testing... not until the 3rd jump.

If you slam the wheels into a wall with a rolling robot, will they crack? Not in our testing.

I'm confident that VEXpro Mecanum Wheels will stand-up to normal wear and tear during an FRC season. If a wheel breaks, it is likely that the wheel wasn't damaged due to extended match play, but instead the robot was dropped when being loaded into a mini-van.

Also, I hope it goes without saying for VEX products at this point:
If you have a problem or break, please contact our tech support folks so they can help make it right. prosupport@vex.com

I'm especially excited to see teams using our new 4" Mecanum Wheels. This game lends itself perfectly to small wheels, and I believe there are some strategies which would benefit from holonomic motion.

-John
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In the interest of full disclosure: I work for VEX Robotics a subsidiary of Innovation First International (IFI) Crown Supplier & Proud Supporter of FIRST
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