2583's prototype shooter

[ferrari77]

Under that 6 inch KOP wheel is a CIM directly hooked to it

[ttldomination]

Originally Posted by ferrari77

Under that 6 inch KOP wheel is a CIM directly hooked to it

Either that's a 2009 wheel, or it's the 4" KOP from this year..?

- Sunny G.

[ferrari77]

It's actually one of the 6 inch white Hi Grip wheels that came with this year's KOP drivetrain

[ttldomination]

Originally Posted by ferrari77

It's actually one of the 6 inch white Hi Grip wheels that came with this year's KOP drivetrain

Really? Intense.

Also, are you sure that's 50 feet? It looks more in the range of 25-30 feet, but it could be the camera playing tricks on me.

- Sunny G.

[ferrari77]

Yeah its about the size of an FRC field, its probably the camera angle and the fact that the guy is pretty tall

We wont be shooting that far in the game and over about 20 or 30 feet is it very highly accurate

[androb4]

Really nice! Have you guys tried shooting at a higher angle?

[jeremy callahan]

Originally Posted by androb4

Really nice! Have you guys tried shooting at a higher angle?

i am having the same question as this guy im wondering if you put it on an angle will the frisbee have a different reaction?

[ClearlyInvsible]

I think you guys may want to try and amp the power up a bit, for increased range.

Otherwise, bang up job!

[BurkeHalderman]

How much compression do you have on the disk?

[Tem1514 Mentor]

Originally Posted by BurkeHalderman

How much compression do you have on the disk?

That is a good question and if you watch the video closely you will see the clear wall moving as the frisbee goes by. I am just guessing but once that wall becomes fixed your results will change and I'm thinking not for the better, but who knows, I could be wrong.

[CalTran]

What was the RPM of the CIM? Was there any reduction off the CIM, or was it straight direct dirven off of it? For this prototype, was it just battery->cim->wheel->frisbee?

[ferrari77]

To answer a few questions

The shooter was about waist high, so 3 or 4 ish feet off the ground and it was angled up with just a 2x4 under the front

The wheel is direct driven by the CIM and just directly hooked to a battery. I believe this leads to around 4000 RPM

At first we cut the wood circle and placed it exactly 11 inches away from the wheel
Then we added two polycarbonate sheets, each 1/8 in thick to the inside of the curve. So we ended up with only about 1/4 in of compression

We were wondering how changes in RPM vs compression would change the trajectory and we found that using a half dead battery, so a lower RPM, the frisbee only flew marginally less distance and was stills table. However, removing just one 1/8 in sheet of polycarbonate caused the frisbee's range to drop from 50 to about 10 feet.

We will be trying a higher angle soon, however based on other videos, including the Robot in 3 Days robot, shooting at a higher angle will still work

[Hallry]

Originally Posted by ferrari77

Yeah its about the size of an FRC field, its probably the camera angle and the fact that the guy is pretty tall

We wont be shooting that far in the game and over about 20 or 30 feet is it very highly accurate

How high was the shooter off the ground?