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Unread 18-03-2014, 12:34
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Engineering Coach
AKA: Allen "JAG" Gregory
FRC #3847 (Spectrum)
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Join Date: Jul 2008
Rookie Year: 2003
Location: Texas
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Re: Al's Annual Inspection Thread

Quote:
Originally Posted by wireties View Post
We just finished the Dallas Regional and the robot on robot contact was pretty rough. We are thinking of adding some strength in the bumpers. Can the CD community help us understand on the limits and intentions of R21? We know we need to query the GDC but I'm not sure how to phrase the query (yet).

So the angle to hold the cloth must be aluminum, correct? No steel? But we could use 7071 or 7075?

Can we interconnect the top and bottom angle pieces? We know many top tier teams do this. But is it contrary to the rules? I'm thinking a solid 5"x1"x<length> u-channel is problematic for an inspector. But perhaps if there are just some small finite number of inter-connections between the top and bottom angle that might be OK. So my last query is how much structure can there be between the top and bottom angles before it causes inspection problems.

TIA
Most of what you see behind the bumper is consider part of the mounting system for teams. Texas Torque and my team both used sheetmetal parts as part of our bumper assemblies this year that become part of the mounting system for the bumpers. Torque's are an entire c channel like you describe. We use a z- bend on our top rail and normal 1" angle on the bottom.
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