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Unread 14-03-2012, 11:57
Dan_Karol Dan_Karol is offline
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AKA: Daniel Karol
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Re: Cim-Sim gearbox for shooter questions

Ok, so having had similar problems I think I can shed some light for you.

There are a few factors that go into the shooter:
  1. Shooter wheel surface speed
  2. Shooter intake compression
  3. Shooter exit compression
  4. shooter contact distance
  5. Shooter Inertia

It sounds to me like with both the 6" and 4" wheels your surface speed should be about on target so I'm going to jump over this section.

From your description you say the intake to the shooter wheel has more compression then the exit. this causes almost all of the energy to go into compressing the ball very quickly in order to "suck" the ball down into your shooter. This expends a HUGE amount of energy on relatively non-productive areas. Our shooter has less then 0.5" of compression when the ball enters it and has about 1.5"-2" (depending on tilt angle and other factors). This setup has worked a lot better for us then constant compression at any distance (and we have tested it). I would suggest moving your shooter shaft forwards so the intake is looser and the exit is tighter. This is probably the simplest solution to your problem.

Because your shooter is almost 100deg you should have no issues with the contact time with the ball. If anything there may be to much here but I seriously doubt it.

After adjusting the shaft in the hood if your wheel still bogs down then this is probably the place to look. By increasing your inertia the shooter wheels wont take as much of a hit (and my team takes almost no hit) when a ball passes though the shooter helping whit your reliability, consistency, and range.

Hope this helps,
Dan
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