Quote:
Originally Posted by tim-tim
Just a habit of working on aircraft. The robots are vibration machines, so any little advantage to screws backing-out I will take. We have quite a few fastener stores in the area, so access to fine thread fasteners is not an issue.
That being said, we haven't used a 1/4" fastener on the robot in quite sometime - maybe a COTS component that required. We have used #10 rivet nuts in 1/4" holes in the past in the KOP frames.
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I have found that Nylock nuts and bolts do not vibrate loose in FRC applications and if there is a situation where a Nylock is not suitable then we use medium strength thread locker. Once I introduced thread locker to the team there have not been any instances were a fastener came loose.
Where to you find rivet nuts that go in a 1/4" hole all the ones I've ever found use the annoying 19/64" bit. Because it is a less than common size we keep it in the kit with the rivet nuts so it is there when we need it.
The purpose of the game rules is not to imagine and categorically list everything you should not do, but to give you guidelines of FIRST's intent and leave it to your developing good judgment to know what's acceptable and what is simply skirting the rules. - Mark McLeod [more] 
17-12-2014, 21:29
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