Go to Post IMO the main idea behind FIRST is for the mentors and students to work together to produce a machine that the students could never have produced on their own. - Tim Sharp [more]
Home
Go Back   Chief Delphi > FIRST > General Forum
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rating: Thread Rating: 7 votes, 5.00 average. Display Modes
Prev Previous Post   Next Post Next
  #12   Spotlight this post!  
Unread 17-02-2012, 07:59
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
Posts: 10,798
Al Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond repute
Re: Tips from a veteran Robot Inspector

Next installment in the Al's Annual Inspection list. Thanks to Wayne for getting it started this year.

Bumpers.
Ok bumpers have been around for a while, they change a little every year but they are here to stay. You must satisfy all the bumper rules, not just selected ones. So here goes...
1. They must be backed by 3/4" thick plywood, 5 inches high. If you are not able to get 3/4" in your country then the nearest metric equivalent is OK. Pine boards and MDF are not allowed.
2. You must have two, vertically stacked 2 1/2" pool noodles. Color is not a consideration but they must not be modified by inserting round bar stock to add weight or shaped in any fashion to allow better functionality for your robot. Exception to this rule below.
3. Bumpers must be covered in strong fabric of red or blue color, closely matching the colors of the First Logo. 1000 denier nylon is recommended. You will need to change colors depending on which alliance you are assigned in any match. This means you either have a method of changing colors on one bumper system or you have two bumpers systems, one blue and one red.
4. You may add a 5" long piece of pool noodle in a vertical orientation to cover the corners of your bumper system. This is to insure that no hard parts of your robot or bumper is capable of contacting another robot or field parts. You may miter the corner pool noodles to accomplish this protection. See Fig 4-6 in the robot manual.
5. Bumpers must attach firmly to the frame of your robot, be able to be easily removed or mounted and all parts of the bumper system must remain inside the critical 2" to 10" above a flat floor. All sections do not need to be at the same height but they all must remain inside the bumper zone when mounted.
6. Bumpers need to have your team number displayed on four sides of your robot. The numbers need to be 4" high, 3/4" stroke and readable from a distance. Team numbers need to be white in color or outlined in white. If you are doing well, you want other teams to know who you are.
7. Small gaps behind the bumper system are allowed due to boltheads, fasteners and welds. However, bumpers only work when backed up by robot structure. So small spaces can be bridged by the bumpers but nothing greater than 8" long. See Fig 4-7 of the robot rules.
8. With this year's game, many teams will design their bumpers to have openings for appendages or ball handlers. That is OK as long as all exterior vertices are covered with a bumper section (backing board) of at least 8" in long on both sides of the vertice.
9. Your bumpers will be weighed separately at inspection so remove them but bring them with your robot to the weigh and size station. One complete set of bumpers must weigh less than 20 lbs. Both sets need to be weighed if you have a red and blue set.
10. Securely fastened to the robot frame means threaded fasteners, cleavis pin attachment or some other rigid form of attachment. Zip ties, duct tape, rubber bands or velcro do not meet the requirement of secure fastening.
There are several questions about bumpers on the Q&A forum, I suggest you search 'bumpers' on the forum and read them. You can find it here...
https://frc-qa.usfirst.org/Questions.php
__________________
Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
________________________
Storming the Tower since 1996.

Last edited by Al Skierkiewicz : 17-02-2012 at 08:03.
Reply With Quote
 


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 07:30.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi