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-   -   A question about 8in Bumpers... (http://www.chiefdelphi.com/forums/showthread.php?t=144582)

DaveL 24-02-2016 01:48
Re: A question about 8in Bumpers...
 
Two more cents:
If you decide to widen your bumpers, you can widen the front side of your bot and keep the back width the same. Your frame shape does not have to be a rectangle.

gpetilli 24-02-2016 09:56
Re: A question about 8in Bumpers...
 
Quote:
Originally Posted by GeeTwo (Post 1545549)
It should be named something that actually says what it is - the minimum bounding convex curve in a horizontal plane. If they'd just add convex, calling it the CONVEX FRAME PERIMETER (or even just CONVEX PERIMETER) everywhere the term is used, they'd probably cut the bumper Q&A volume by 75%.
I would vote for Convex Perimeter - or maybe String Perimeter.

Bumpers must cover at least 8" on either side of the Convex Perimeter and be hard mounted to "frame" within 1" of the Convex Perimeter. Any Convex Perimeter side with Vertexes less than 8" apart must be completely covered by bumper, but this short side does not affect the 8" requirement for the other adjacent sides of these Convex Vertexes.

Miranda_Sharp 24-02-2016 10:11
Re: A question about 8in Bumpers...
 
Thanks for the advice! Last night we just ended up extending the frame out about another 6 inches on either side, so we maintained the opening and didn't have to change much else. It was a way quicker fix than what we thought it would be, and kept our little robot intact. We will definitely be reading the manual a little closer next year.

Christopher149 24-02-2016 10:33
Re: A question about 8in Bumpers...
 
Quote:
Originally Posted by Leav (Post 1545689)
Another radical notion is to modify it to receive boulder from the embrasure.
Good luck, and feel free to ask for further explanation if needed.

-Leav
That's not the embrasure, that's the brattice! (brought to you by Mr. Persnickety)

scca229 24-02-2016 11:31
Re: A question about 8in Bumpers...
 
Quote:
Originally Posted by Miranda_Sharp (Post 1545870)
Thanks for the advice! Last night we just ended up extending the frame out about another 6 inches on either side, so we maintained the opening and didn't have to change much else. It was a way quicker fix than what we thought it would be, and kept our little robot intact. We will definitely be reading the manual a little closer next year.
Just to circle back and make sure, your frame perimeter ended up <=120", correct? You say "little robot" so I'm guessing that is the case, just don't want you to have fixed for one part of the rule and run afoul of the other half of it in the process.

Happy to know it was a quick fix. Good Luck!

GeeTwo 24-02-2016 21:23
Re: A question about 8in Bumpers...
 
Quote:
Originally Posted by scca229 (Post 1545945)
Just to circle back and make sure, your frame perimeter ended up <=120", correct? You say "little robot" so I'm guessing that is the case, just don't want you to have fixed for one part of the rule and run afoul of the other half of it in the process.

Happy to know it was a quick fix. Good Luck!
The robot was originally 22" wide. As I read things, they added 6" on each side. This makes the "pickup" side 22" + 12" = 34" wide. (Mount the batter in reverse!!!) This leaves (120 - 34 - 22)/2 = 32" on the diagonal lengths. If you started with a full length KoP chassis, and did not add the "wedge", you're about an inch over on the perimeter.


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