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#1
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Re: Intake Conveyor Ideal Speed
So what I'm getting is fast as possible without;
Breaking/slipping a belt Burning up/ stalling a motor Obtaining liftoff? |
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#2
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Re: Intake Conveyor Ideal Speed
basically.
I'd aim for 1.25x robot's top speed. Also, a 775pro is likely overkill. I'd probably start with a bag motor first, and if i don't get the power i want move up to some other banebots options. though if you are using lots of 775 pros and want to maintain interchangable spares, it's not a bad plan. |
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#3
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Re: Intake Conveyor Ideal Speed
Quote:
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#4
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Re: Intake Conveyor Ideal Speed
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You intake should command that the game pieces it touches enter your robot, not lightly suggest that they do. |
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#5
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Re: Intake Conveyor Ideal Speed
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Thank you. |
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#6
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Re: Intake Conveyor Ideal Speed
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Quote:
We like our intakes going over 1000 RPM. Sometimes even faster, time waiting to intake is time you are not scoring. Touch it. OWN it. |
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#7
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Re: Intake Conveyor Ideal Speed
3500 RPM too fast?
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#8
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Re: Intake Conveyor Ideal Speed
You will have to test it and make sure it won't stall out, but it just depends on your surface speed requirements.
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#9
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Re: Intake Conveyor Ideal Speed
I second the recommendation for AT LEAST 2x robot speed. The reason being that if the top of a ball is moving at 2x robot speed, the cewnter of the ball will move at 1x robot speed while the bottome of the ball touches the ground. Thus the FUEL will get get pulled into the robot significantly faster than the robot can drive.
The FUEL won't get knocked away and the robot won't jam the FUEL into its own intake with forward inertia. Perhaps most importantly in this year: if the robot interacts with a sea of game elements it won't push the bulk of FUEL away as it collects FUEL on the perimeter of that sea. Strongly recommend the highest powered motor(s) you can stand for the application, even if you run it on an under-sized breaker (like a 775 pro on a 30A circuit). No one has ever said 'my intake can collect [game element] too quickly.' More to the point: the faster you can collect FUEL/GEARs/whatever the more time you have to score it, and there are fewer things more painful to a scout than watching a team spend time collecting game element. My $0.02 anyway... |
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#10
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Re: Intake Conveyor Ideal Speed
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Every ball intake I ever designed had a linear speed that at least matched our robot in high gear forward speed. This allows all the balls to clear the intake at the speed you're travelling so you don't start plowing them and pushing them out of the way. |
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#11
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Re: Intake Conveyor Ideal Speed
Quote:
http://www.buildblitz.com/team-copioli-intake-design/ |
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#12
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Re: Intake Conveyor Ideal Speed
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It is also important that your FUEL elevator be fast enough to keep up with your intake, so FUEL doesn't jam. My team made that mistake in 2012. |
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#13
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I would use a vex planetary gearbox so you can adjust your reduction ratio after building the robot. Honestly, I think you'll want a medium speed, but...
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#14
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Re: Intake Conveyor Ideal Speed
Good discussion,
I'm thinking that we're going to use a 10:1 Versa Planetary reduction with a 775 for our intake and elevator. With 31 RPS, I think we'll be intaking fuel pretty fast. Although I'm worried that we wont have enough power to lift palls up our elevator. Any experience with this? Also, if we have wheels on our roller (1/2 shaft) how would I incorporate them into my calculations? Specifically on JVN. |
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#15
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Re: Intake Conveyor Ideal Speed
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Personally I would have your intake and elevator on seperate motors. It's probally best if you are capable of controlling them seperatly if a game piece jam happens. This should also take some of the stress off of that 775pro (even thogh it is overkill anyway) |
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