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Unread 23-06-2002, 22:49
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blood has officially been involved with my souveniers...

Posted by Rob DeCotiis at 03/09/2001 5:42 PM EST


Student on team #504, RoBUCtics, from Red Bank Regional High School and Jesel.



i got my first cut making these souveniers... (i only have 5 made, so im probably gonna have to have some sort of contest for who gets one...
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Goal Size Check

Posted by Dodd Stacy at 1/13/2001 9:39 AM EST


Engineer on team #95, Lebanon Robotics Team, from Lebanon High School and CRREL/CREARE.


In Reply to: Re: Ballderdash check???
Posted by nick237 on 1/13/2001 12:19 AM EST:



: I would be a little worried if there were more than the 11 or 12 balls in a goal from what I saw.
: Are you sure the goal is the right size, what size did you make the goal and when you put the 2nd ball in, is the second ball partialy on top of the first or next to it?
: Next what height did you make the goal from the floor?
: nick237

The 2nd ball in sits partially on top of the 1st, and they stagger somewhat all the way up. We checked the goal dimensions pretty carefully as we went, double checking the drawing against the BOM lengths on the PVC. The goal is 7'0" floor to top, and the flange and tee centers are on a 25" dia BC. The BOM lengths on the vertical and horizontal PVC pieces were correct as listed to produce this result.

It may be that the verticals bow outward a bit in the middle, due to assembly inaccuracy while gluing up the PVC, but they look parallel. We'll measure this.

Has anybody else tried how many of THEIR balls fit into THEIR goal?

Dodd

:
: : I thank Nick and Ken and Joe for confirming the 12 balls in the goal maximum at kickoff and for reminding all teams that SportFun balls are far from round.

: : I repeat my question. Have any teams out there inflated the small balls to however you wish to interpret the FIRST description of size and tolerance and determined how many will fit in your goal?

: : BTW, Ken, we loaded our balls by hand, over the top, repeatedly, while developing a good technique for quick loading by the HP over the barrier. It always came out the same - plenty more room after 12 balls (all we had).

: : And Joe, we cut a 13.5" diameter hole in a piece of 1/4" plywood and use it as a (barely) GO gauge on the minimum diameter of the "egg." And even an egg, if it's elastic and internally pressurized, is going to have one round cross section somewhere, right? So our balls are no smaller than 13", any way you slice them.


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Re: Ball Sizes? What Gives?

Posted by Patrick Dingle at 1/13/2001 8:59 AM EST


Other on team #639, Red B^2, from Ithaca High School and Cornell University.


In Reply to: Ball Sizes? What Gives?
Posted by Dodd Stacy on 1/12/2001 8:35 PM EST:



Last year, at all the official FIRST events I attended, the balls were overinflated (e.g. the balls had a diameter > 13" at the smallest circumference of the ball) Most times it was more like 14". I suspect FIRST overinflated both the big and small balls at the kickoff, and i'd expect the same at competitions.

Patrick

: I'm surprised by the +/- 2" tolerance on the big balls, but I'm REALLY confused about the small balls. We just blew up the 12 balls we have left from last year to 13" diameter and put them in our new goal, and there appears to be room for at least 3 or 4 more.

: Our kickoff coaches swear only 12 fit in at kickoff. Is this a repeat of Ladder Logic, where the kickoff balls were overinflated and could be lodged firmly in the ladder rails, and the game balls were so much smaller they almost fell through? Any other teams have a data point here? How many small balls fit in your goal?

: Dodd


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Not using recommended 'Bigen' specs

Posted by Rick Gibbs at 1/13/2001 7:10 AM EST


Engineer on team #145, T-Rx, from Norwich High School, Sherburne-Earlville High School and Procter & Gamble Pharmaceuticals.


In Reply to: 30" ball sits up there real pretty
Posted by Raul on 1/12/2001 1:54 PM EST:



A couple years ago, my son got a 'Bigen' for Christmas in its original box. I remember saying, "Hey look - Sport Fun - Boy I hope FIRST never gives us those!" Anyway, if I remember right the box said that it should/could be inflated to 32-36". Maybe that's where some of the confusion comes from.
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