View Single Post
  #22   Spotlight this post!  
Unread 16-02-2016, 19:37
AllenGregoryIV's Avatar
AllenGregoryIV AllenGregoryIV is offline
Engineering Coach
AKA: Allen "JAG" Gregory
FRC #3847 (Spectrum)
Team Role: Coach
 
Join Date: Jul 2008
Rookie Year: 2003
Location: Texas
Posts: 2,549
AllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond reputeAllenGregoryIV has a reputation beyond repute
Send a message via AIM to AllenGregoryIV
Re: Are these tanks legal?

Quote:
Originally Posted by gpetilli View Post
The issue with the banned white Clippard tanks was that they had threaded ports on either end and if the brass insert was over tightened, the tank could (and did) fail at the threads. I cant tell by the picture, but if it uses threaded ports, as a RI I would fail it even if it were not Clippard and was demonstrated as rated to 125 psi.

Yes, bring documentation of where and what you purchased.
What testing have you done that proves that it is any threaded port on a polypropylene tank that can cause problems? Have you ever seen, heard of, or documented any plastic tank failures in FRC other than those by the original white Clippard tanks?

If I make a black plastic wheel and it happens to break apart and throw shrapnel when spun at 100 RPM should we ban all black plastic wheels? That would be the same thing as banning all plastic tanks. We specifically know that the Clippard tanks had manufacturing problems yet some people still hold it against every other plastic tank on the market, I will never understand this. I hope to keep everyone safe as well and individual teams should decide what is safe for them but the Robot Inspectors are there to enforce the rules as they are written. It would be easy for the GDC to ban all plastic air tanks with threaded fittings if they believed they caused a risk, they haven't; there for they are legal and should be ruled that way by all robot inspectors unless other factors are at play (tanks clearly damaged or showing cracks, etc) that lead you to believe they are unsafe.
__________________

Team 647 | Cyber Wolf Corps | Alumni | 2003-2006 | Shoemaker HS
Team 2587 | DiscoBots | Mentor | 2008-2011 | Rice University / Houston Food Bank
Team 3847 | Spectrum | Coach | 2012-20... | St Agnes Academy
LRI | Alamo Regional | 2014-20...
"Competition has been shown to be useful up to a certain point and no further, but cooperation, which is the thing we must strive for today, begins where competition leaves off." - Franklin D. Roosevelt