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#16
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Re: 3 Wheel 3 CIM shooter
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#17
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Re: 3 Wheel 3 CIM shooter
And I thought 2 miniCIMs for a shooter was crazy. I look forward to seeing this launch some disks!
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#18
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Re: 3 Wheel 3 CIM shooter
Have you guys directly compared this to a 2 wheel, 2 minicim shooter? I am really curious how much more distance and repeatability you get.
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#19
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Re: 3 Wheel 3 CIM shooter
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I thought about it further and think it may be a function of the stored energy in the pneumatic wheel compression. The compression coupled with the wheel deforming to "cup" the frisbee gives a reaction where the frisbee comes out non-level with the launch base. |
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#20
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Re: 3 Wheel 3 CIM shooter
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If that's what's happening in your case, you might be able to solve it by tilting the guiderail slightly toward the frisbee, or adding a piece to keep the frisbee from climbing the guiderail. |
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#21
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Re: 3 Wheel 3 CIM shooter
Have you given much thought to incrimentally increasing the speed of each subsequent wheel?
In other words, why directly drive all three wheels? A lot of teams have shown significant success with (relatively) lower speeds on the first wheel the disc comes in contact with. Additionally, it should (theoretically) increase your throughput (and potentially overall efficiency), as the first wheel will lose less energy and thus return to effective speed quicker. |
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#22
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Re: 3 Wheel 3 CIM shooter
WOW! Very impressive you guys. That is getting some distance. Do you all plan to shoot full court?!
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#23
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Re: 3 Wheel 3 CIM shooter
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#24
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Re: 3 Wheel 3 CIM shooter
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You know you don't *have* to do this with gearing, right? Those motors are on speed controllers, so you can simply experiment with the speed values you send them once you have a proper control system in place. Many teams have reported great success with 2xCIM linear shooters, direct drive to the wheels, with the first one set about 60% speed. |
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#25
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Re: 3 Wheel 3 CIM shooter
Good to know. We tried mini -> mini a while back and got results that were good enough to move forward. I'll see if I can't leave space in the design for a third motor just in case we end up feeding or something.
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