After much testing we found great results with this shooter design, each side is powered by different motors allowing us to spin each side independently. This allowed us to get a more consistent shot! We were running 0.5" of compression on this prototype.
Additionally we found that we are able to shoot into the trap from the floor somewhat consistently, which was very exciting!
Any idea of the approximate angle you were shooting at?
Are you seeing more improvement or consistency with the two wheels on both sides than the other prototype with wheels all across?
Are you outside launching???
Hereâs the view outside of my classroom today. Where itâs a balmy 6 degrees.
These are excellent results and videos thank you for sharing. Our next launcher iteration may use similar principles.
Do you have any concerns that the GDC could implement an update to make this non-viable?
Do you think it might behave differently on a real field?
The bigger concern to me is if this even works on a real field.
We were mostly testing shooting in the trap just to see if it was theoretically possible with the prototypes we had. The fact that it was able to make it in at all was a surprise to all of us. As of right now, the only thing that I would rely on is that if all else fails and it is still legal, shooting into the trap is a possibility. We just thought it was neat 
As for our field, we can never be sure how close it is to real field behavior until we are on a real field. I believe we just built the team version. Personally, I wouldnât rely too much on it, but who knows
We are not sure of the exact angle, but if I had to guess, I think it was around 60 or 70 degrees from the floor! Additionally we got a lot of our tuning for this shot from slowing down the flywheels.
Thats awesome! Our team has been loving what you guys have put out this year!
Yes we had much better results with this style of shooter, so we can give more backspin for additional consistency.
Additionally these are the wheels our team has been using for the shooter design we ended ups going with.
50a Durometer
We did some very preliminary testing yesterday and felt it was worth exploring⌠hopefully some other folks are looking at this too.
What size gears are you using for the shooter to drive the bottom axle and is it 1:1?
Love the videos youâre putting together!
With both sides being powered independently, what was your speed differential to create effective spin?
Would you expect similar consistency with only 1 set of top and bottom rollers with the independent speeds?
How does feeding effect the shooter? If you feed the shooter rather inconsistently does it ignore it and shoot as expected?
Canât wait to see your robot come together!
Is this the real polycarb trap or a wood replica? I see both a transparent material and white wood.
That looks great!
When you say backspin, do you mean spin about the vertical axis? Does that make a measurable difference in consistency, all other things being equal?
Thank you!
We were spinning 1 side at 70 and one side at 60.
*Note 75 was the max for our Falcon 500 velocity code
We did not get enough range or consistency with our single roller on top/bottom design.
We noticed feeding does impact the shot but it is negated quite a bit with the second roller sets!
