| nikeairmancurry |
18-02-2012 19:33 |
Re: 3 Balls in a second and a half
Quote:
Originally Posted by LedLover96
(Post 1129512)
Is your shooter wheel direct driven by two BB RS775s? I didn't see any gearing in the video.
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It is direct driven. The reason we went with this was because we had success with a similar design in 2006.
Quote:
Originally Posted by Manoel
(Post 1129695)
One mighty flywheel! Under some assumptions¹, I would say the largest roller takes about 6 seconds to spin up to full speed! Am I correct in my assumptions?
¹ - Dual RS775-18 motors directly coupled to the solid aluminum roller, approximately 100 mm wide and 100 mm in diameter with an 85 mm radius, giving a moment of inertia around its rotation axis of ~1067746.85 g-mm². Negligible frictional losses.
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Very close, around 7 seconds was where we thought, but while its ramping up, we have plans to occupy the time.
Quote:
Originally Posted by Pun-isher
(Post 1129743)
Looks fairly heavy considering how high it will be mounted, but very solid shooter.
The speed may be slightly overkill, maybe 2 seconds for all three balls but that's just me.
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Slow motion video had it 1.5 secs, but its a rough estimate. Again its not a final interval we want, it was just something that happened during testing.
For those asking about the rollers, they are custom made on a lathe. :D |
