8900 Parallax Reveal

** Note: leaf for aesthetic purposes **

Specs:

Drivetrain:
4 motors holonomic drive (Geared 1.6)
4 4" omni wheels

Intake:
1 motor

Sensors:
2 ultrasonic
6 integrated encoders
6 line trackers

Shooter:
6 motors
Slider-crank mechanism
8 rubber bands either side
Geared 5:3
Hitter: custom ball bearing made from spacers

Trigger:
1 motor
Geared 1:1

Autonomous: 20 points (4 preloads in high goal)

Ideas (that were designed but not yet built):
A lifting system using a one-way winch hooked up to the 6 motors for the shooter (one-way so that during shooting, the lift doesn’t deploy, but if the crank is spun the opposite direction, the rope will begin to pull the lift up)

Phillips Academy’s Competitive VEX Robotics Club is made possible in part by a grant from the Abbot Academy Association, continuing Abbot’s tradition of boldness, innovation, and caring.

Your robot looks good, but I can’t really judge it’s firing rate or accuracy just from pictures. Do you have any videos of it shooting? Also do you have any close up pictures of the launcher?
Thanks.

4 motor turbo x drive? How does that fare when someone goes to push you? Does it stall very often?

Second that. It looks good, but how good is it really.

Go to competition with the leaf and it’ll be perfect.

Seriosuly though, you should provide video of it shooting if you can :slight_smile:

Sorry, no videos. Our fire rate is 1 sec/ball. Accuracy is 80-90%.

Sorry! Wrong specs, I just edited that.

I’m sorry if I’m missing something, but how does the pullback and release mechanism. I can’t tell from the picture.

It is quite good…that is if it works on the competition switch. At our first competition, our programmer messed up and our robot didn’t work on the competition switch, so our scores were very low. Hehe…
So sorry I do not have videos!

The trigger grabs two screws in the back of our hitter and the crank pulls the hitter, which is tied to the rubber bands, back a certain angle depending on our firing distance. The trigger opens at this certain angle, and the ball is shot.

Cool, Thanks.

Fire rate: - YouTube
Sorry for the bad quality.