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Great point! It only works though if your field is parallel with the equator and ours isn't so we needed 8 wheels.

:0

Bobby is in love

@@matthewmorrison5583 the other goat appeared

Sam Hyatt

@@BasicPurple bro

Sam Hyatt♥

haha sorry

www.mcmaster.com/products/spacers/nylon-unthreaded-spacers/ You want 6mm OD and 4.3mm ID. You can pick any length. I think I got 32mm long which was perfect for just using one spacer.

@@515Revision Thank you!

are you talking about the indexer ratchet?

If so, in this case it wasn't under much load and torque at all which allowed it to work fine, and it needed to be out of the way otherwise it touched the discs as they came up the intake. So yes its not in theory the best but worked fine for fixing a problem on the robot.

@@515Revision got it, thanks so much!

Montserrat 😁

I believe that is unused code. Our drivetrain code uses odom wheels for skills auto and motor encoder for match play. We occasionally ran into problems with robot position during match autonomous, however it was typically caused by collision between us and the opposing team.

The main advantage we have seen to low strength gears on the drivetrain is size. We originally had high-strength gears on the drivetrain, but were able to slim each gearbox by 0.5" using the low-strength gears. There is a risk of gear slipping, but we did not run into any of these problems throughout Spin Up.

we see you guys using the standard gears in vex, we used high strength gears on ours , would that make a difference?

Try changing your spacing so it can move very slightly. The friction may be too much for the motors.

They used blue cartridges for 450rpm, the green cartridges gave you 150rpm. However 450 on 3.25 is very fast, so I would not recommend to beginner teams

Yea so that was a stage that allowed the roller mech to be geared down more. It was a screw but on it was a drilled out high strength shaft which allowed it to spin freely on the screw but connect the two sprockets motion together.

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Bang bang switches between 0% and 100% power, depending on whether the flywheel RPM is above or below a desired target, respectively. Its advantage over PID is that it is simply the fastest way to reach an upwards target speed. There is no lost time from slowing down to stabilize the speed. The disadvantage, at least from our testing, is that it can more quickly overheat the motor and is more difficult to maintain a tight margin around the desired velocity. A middle-ground between the two is Feed Forward, which uses Bang Bang when the flywheel RPM is far below its desired target, but then switches to PID once it is within a certain range. The range from us was 300 RPM below (in 1:1 cartridge units).

@@515Revision ah okay thats very cool thanks for sharing

Yeah, unfortunately partner got stuck for half the match and we narrowly lost

Most likely not

The bottom row of screws on the drivetrain are screw joints, connected directly to the drive wheels. This allows the same free-spin as a shaft/axel setup, but with additional structure, due to the screw holding in both C-Channels on its respective side.

@@515Revision That's super cool, so did you choose to have all the wheels slightly lower due to spacing? Or was it for going over the low goal barrier or something?

vid on that coming soon 👀

We don't use any 3D printed parts on the robot. Please correct me if I'm wrong, but I believe you are referring to the white plastic components. These parts are laser-cut Delrin, which fall under 12 x 24 non-shattering plastic sheet.

@@515Revision Oh that's smart

Logan is going to University of Cincinnati I (Ben) am going to University of Kentucky

@@515Revision what major are you guys going into?

true

@@515Revision 🧢

@@515Revision not mid

6

bro comments anything

Worry not, we can refund you $4.20 🧌