Name of this COTS part?

[MichaelBick]

I'm not sure what those are called, but you might want to look into making your own bearing blocks for a linear elevator. It tends to be a lot cheaper, but still very smooth and easy to build.

[DampRobot]

Yeah, those two parts are cam followers. I found them on McMaster a month or two ago and had the exact same thought, that they would be great on an elevator. They're a bit spendy though, at about $20 a piece. You can always go with regular bearings on shoulder screws if cost is a issue.

By the way, I really like that assembly. I assume it was designed for a third stage which would interface with C-channel?

[Adam.garcia]

Originally Posted by DampRobot

By the way, I really like that assembly. I assume it was designed for a third stage which would interface with C-channel?

Yep, that's exactly what it is for. I'm redesigning this carriage to be a little more adaptable to any given game. I may start to post CAD files of my mechanisms and drive trains on FRC Design and on our website.

[Cory]

Originally Posted by DampRobot

Yeah, those two parts are cam followers. I found them on McMaster a month or two ago and had the exact same thought, that they would be great on an elevator. They're a bit spendy though, at about $20 a piece. You can always go with regular bearings on shoulder screws if cost is a issue.

By the way, I really like that assembly. I assume it was designed for a third stage which would interface with C-channel?

For anyone concerned about cost, shoulder bolts aren't even necessary. We use standard cap screws with great results.