11 ft when it hit the ground…which is why we have a ways to go. Still, it’s pretty decent for 2 motors and 7:1 (and a shaky launcher). I think sinking high goals from the starting tile is a definite possibility in the near future.
This is identical (almost) to our set up, we started with 2 motors which just don’t have enough power, so went to four as you have. It does work, but my worry with this is it doesn’t leave many motors for intakes (1-2motors), driving (2-4 motors) and then trying to lift another robot (probably 4 motors). So assuming you drive with 2 and intake with 1, that only leaves you 3 motors to lift with.
As for the wheel size. The small wheel has a lower rotational inertia meaning it takes less torque to get it up to speed, but it needs to be spun at a higher speed. So there is a trade off either way and it would be a good thing for the team in investigate.
we where going to test gearing the 4 motors from the flywheel to the intake and collection system. then you could have a very strong collection system and not lose too much power in the flywheel. saves 1-2 motors that could be used on the lift or drive.
Safety glasses! This year more than before.
It looks very efficient and if you put that on two c channels, one on each side with motors, you can move it to the degree that you need it!
Its awesome man!!
keep up the good work!
4828
My team tried using speed motors with a similar gear ratio, but we figured that it worked better using high torque motors because speed motors seemed to freeze up very quickly, yet the torque motors last almost forever.
Very nice, and it’s not pneumatic so you won’t leave your pump here again 
Here is the newest update! The launcher is even better than before and I tried to get better shots of the launcher. Hope you enjoy.
Also, let us know what you think of the video or what you want to see!
I don’t want to talk about it!
HMMMM… - 1000 POINTS HIT VIDEOGRAPHER!!!
But seriously, nice launcher. Time to watch it 10 times so that I can copy the gear ratio!
Im sure you could simplify the ratio by using turbo gears. we used high torque motors.
Looks awesome! Have any idea on what you’ll do to actually get the balls into the launcher (the intake)? Or will you just use the launcher for that as well?
(By the way, not sure if you remember me from the state championship/Kids INC. I was the programmer for 7282C and we were in an alliance with you at Kids INC/I was talking to 1115A/C at the end of state)
Looks like you’re getting great results- good distance and consistency. That ratio is huge :). Do you have any ideas for your intake?
Hey guys great launcher but i feel like you shouldn’t reveal too much about it this early on in the season.
In my opinion, revealing early concepts early in the season gets lots of ideas flowing for all teams. It actually helps get everyone building great robots and thinking of ways to make improvements to the shown mechanism.
I highly doubt that the mechanism they’re using right now will be exactly the same as their end-game launcher and I also doubt that showing it puts them at much of a disadvantage because most people have already thought of something similar.
There are some foam balls in the internet “Champion Sports HD4” from various sources. They are described as a 4" Coated High Density Foam and range in price from $2.17 to over $5. I ordered some, but can only guess if they are similar to real NBN balls. If someone has a real NBN and could compare them that would be great.
With 2 motors, do the flywheels take time to speed back up before the next shot? ie. if you shoot multiple balls within ~1 sec of eachother, does their range decrease after the first shot?
With two motors, yes it does take some time. It would probably take 1-2 seconds before you could shoot a second ball at the same distance.
Do you notice any change in diretion when shooting from a still point? For example, the ball will fly left or right and not perfectly straight? If so you could gear both wheels together to make them even. Also dont you think the design might be to bulky? I think those wheels are just to big haha
No. It seems that the ball flies nearly perfectly straight (to me). And yes, I think the design is a bit bulky. However, you could try different wheels, use turbo motors to eliminate some gearing, or just design your own. This has simply been a proof of concept for us.