Quote:
Originally Posted by Cash4587
What source of stored energy are you using? Also, about how much stroke are you getting from that puncher?
|
We used 6 loops of surgical tubing, which creates 12 segments, each about 4" long when unstretched. The tubing is fairly thick, maybe 1/2" OD, 1/4" ID. Stroke in the video was about 8", but it went from a 12" position to a 4" position. The dog got caught in a nearby gear, when we released it.
It is very important to pay attention to detail when using this style of launcher. We almost gave up on it a few days prior, but redesigned it to have more stroke length, which made a huge difference.
Our latest revision will only have 12" of stroke and will incorporate the use of a sled / seat to propel the ball. The ball will not be launched from the end of the mechanism as shown in the video... at least we are hoping not too. We just finished the CAD for it today and will assemble the new one in the next few days.
As said numerous times elsewhere, scoring the ball is meaningless if you can't pick it up and pass it off quickly and efficiently. It is scary how distracting the scoring mechanism is for teams. DESIGN your robot to pick up and pass the ball too!