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Re: Trajectory B/C
Posted: March 2nd, 2010, 5:30 pm
by zyzzyva980
As in what projectile? Yes, you can use tennis balls, racquet balls, ping-pong ball, or plastic practice golf balls... out of those, I recommend one of the first two, ping pong balls and plastic practice golf balls are just too light and inconsistent.
Re: Trajectory B/C
Posted: March 2nd, 2010, 9:38 pm
by Press_Tilty
Hey, best scores?
We got 140
Re: Trajectory B/C
Posted: March 3rd, 2010, 7:23 am
by zyzzyva980
Good job. There's a score tracker in the top right where you can post your scores but I don't think many people have done that this year.
Re: Trajectory B/C
Posted: March 3rd, 2010, 7:24 am
by cypressfalls Robert
many people just abused the fact there was one and posted hard to beleive scores
Re: Trajectory B/C
Posted: March 3rd, 2010, 1:39 pm
by sj
During regionals we got a score of 190, but at practice now two weeks before states we are consistently getting -100's.
Re: Trajectory B/C
Posted: March 3rd, 2010, 9:47 pm
by Press_Tilty
Hey, also, does turning in extra graphs get you any extra points? I don't think it would...but thats what this is for, right?
Re: Trajectory B/C
Posted: March 4th, 2010, 4:01 am
by starpug
cypressfalls Robert wrote:many people just abused the fact there was one and posted hard to beleive scores
If you believe that why didn't you report it to a mod. Just cause something is hard to believe, doesn't mean it's false.
Re: Trajectory B/C
Posted: March 4th, 2010, 7:46 am
by zyzzyva980
Extra graphs do not warrant extra points, but they do allow you to pick which ones you give to the judge, so you can pick which ones look better.
Re: Trajectory B/C
Posted: March 4th, 2010, 3:01 pm
by sean9keenan
starpug wrote:cypressfalls Robert wrote:many people just abused the fact there was one and posted hard to beleive scores
If you believe that why didn't you report it to a mod. Just cause something is hard to believe, doesn't mean it's false.
I think all he meant is that sometimes people get a score once... and then broadcast it to the world, in an event like trajectory if you test your device 1000 times, it is very likely that at least some of those scores are rather "unbelievably" good, even though they are true, even if they aren't likely to be reproduced in competition.
Luck if you will
Or probability...
Of course... A good device helps
Re: Trajectory B/C
Posted: March 4th, 2010, 3:02 pm
by Nemokid
Paradox21 wrote:I also think that we had to exceed the spring constant of our tubing in order to make the 10 meter shot. We avoided that by doing very few tests that far out. I think thicker surgical tubing or thicker exercise tubing should work well. If your surgical tubing has a high enough spring constant (which can be adjusted by using a thicker piece of tubing, or doubling it up) it should work just as well as exercise tubing.
Doubling up the surgical tuping definetly messed up our consistency. we had much better results with single tubing.