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Re: The spread of pinching rollers this year
Quote:
Originally Posted by IKE
You are missing 910. They had my favorite as they had the highest surface speed on the top roller of any of the teams I talked to. This allowed them to acquire the ball at a run while most of us had to take it at a walk. In general, on a collector, a top roller that engages a ball to the floor should have a surface speed equal to or greater than 2x the robot traveling speed. Our original top-spin roller was a 10 FPS surface speed which corresponded with our 5 FPS low gear. Our pincher was somewhere between 1-2 FPS SS. I think 910 managed a system with around 8 FPS SS on their roller.
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Hi Ike,
Actually, our roller runs at over 20 ft/sec so that when we're driving full bore at 10 FPS we can grab a ball on the fly with no "bounce-back". If we reverse it at that speed it actually is quite a nice kicker! In fact, our autonomous simply does that - reverses the roller to full speed, we drive about 2 feet into the ball in front of us and it spins the ball up to a high enough speed to run it right up the ramp into the goal!
John
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