VEXPro - After the season

[Negative 9]

Originally Posted by Donut

We used the 8" VexPro Mecanum wheels this season with 1/2" round keyed VersaHubs and were pleased with them. Our robot only competed in 1 regional event but we never had to use any of our spare wheels or rollers. Our students loved not having to spend hours assembling them like last season and I loved the multi-pound weight savings we got in our drivetrain by switching.

And for reference, they just barely fit on the Andymark Nanotube output shafts for direct drive (I don't think we had to get the longer shafts, but that was a while ago).

I was thinking about purchasing a set of 8" Mecanums for my team. I was just wondering why there is such a significant disparity in price between the ones VEXpro sell and the ones AndyMark sell. Does anyone know if there is a comparable quality difference as well?

[JesseK]

Originally Posted by Negative 9

I was thinking about purchasing a set of 8" Mecanums for my team. I was just wondering why there is such a significant disparity in price between the ones VEXpro sell and the ones AndyMark sell. Does anyone know if there is a comparable quality difference as well?

As far as I can tell, there are two major differences:

1. Plastic (glass-filled Nylon) vs Aluminum body
2. Place of Manufacture
   (tradeoffs here -- reference Andy Baker's 2009 Small Business lectures for advantages of local part sourcing)

It's all about final application, particularly with respect to #1. Neither is superior to the other without context.

[IndySam]

Just and addendum to our ball shifter woes.

After further investigation I believe that our problems were self induced and not the fault of Vex.

I don't think the c-clip was properly installed and that is what lead to it's failure not a problem with the shaft itself.