AndyMark 8 Inch pneumatic hub fail

[chapman1]

In my opinion (and I recognize the difference between my opinion and fact) the Loctite was not a factor, unless you poured quarts of it into a container and soaked your hubs in it over the summer. Based on what you said about the failure location, I assume you did not.

You stated that you tested the robot hard, deliberately trying to break it. That is good engineering practice (again, my opinion).

I'm assuming that knowing you were going to do this, your team decided to eliminate as many weak points as possible. Nylock nuts are not 100% nylon, and so, you took advantage of the metal-to-metal contact and added a few drops of Loctite. Pretty sure that did not cause the hubs to fail.

So, you found the weak point in the wheel-hub system that a majority of teams seem to be using this year - the hubs - and you shared it. THANK YOU. This will help a lot of teams.

It seems that this year, more than years past, people are quick to jump on those who post. It's almost painful to read some of the comments when a team posts a CAD rendering of a robot and some of the comments are tantamount to "that looks like 14 gauge wire - don't you know that a CIM requires..."

Come on, people, be grateful when someone shares potentially helpful information - and be helpful with our comments and discussion rather than critical. This is, after all what we're supposed to be doing, right? Setting an example, right?