Congrats to all teams that competed at worlds this past week! With the new game being announced, we decided to do an RI2D once we returned from worlds and before we went home for the summer. Linked below is our robot that we are calling Scott:
Do you guys think you will have issues with the amount of actuations you would get from a feeder such as one with a pneumatic? Especially with 60 rings in play? And how the feeding speed would change drastically with the amount of air in your system?
Not on BLRS, but I think they’ll be fine, as long as they don’t use too many other frequent actuations with other cylinders. That also shouldn’t take much air, and so they can probably get away with a really low pressure.
Why do you pass the rings up and over that piece of polycarbonate instead of directly pushing them into the flywheel? This seems more complicated than necessary.
It was so the robot could hold 3 disks. Each new disk being fielded can stack on top of the last and then be fired in a magazine style.
It seemed to be fine on one vex standard tank for roughly 20 actuation. That is with no pressure regulation and a full stroke of the piston.
I also figured maybe so that they can make sure that the flywheel is at the intended speed before launching it, to ensure accuracy?
Do you think shooting the disc around a 90 degree bend would make it more accurate.
No expansion for endgame points???
I was actually initially estimating that we might need 2 x v5 motors to handle the flywheel.
So… 1 is enough? but what is the cycle time for the shooting (with 1 motor)?
Edit: Impressive Ri2D btw
I ran 1 with 600 rpm but I forget the gear ratio for turning point. It would slow down cycle time but we also had it very compressed since we need the force to shoot from back court
My concern is whether air drift and air resistance will have a greater effect on the disc, as compared to the previous balls (nbn and tp) that we dealt with previously.
If yes, then do we need to spin it out at a higher speed?
the fact that I am also messing me up makes me hate myself
We will test that more as we move into the full season in the fall. From our experience with fly wheels in the past, we feel that there is a sweet spot with contact of the flywheel (Hit top speed but no more) that we will need to figure out.
We ran out of time. It was the end of our semester and those that didn’t move out already, were taking finals.
How much do your 3D printed frisbees weigh?
I’m not too familiar with fly wheels. What is the problem with a 600 RPM motor geared 1:7? AKA how fast could the fly wheels go without being dangerous? Or at how fast are they useless? [This is an actual question as I’ve never built one before.]
I hope you mean 7:1. Always put the driving gear before the driven.
What diameter and durometer are those flex wheels?
Yes. I was asking about 4200 RPM. Also good to know