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Subject: 
Re: Ping-Pong Ball Shooter
Newsgroups: 
lugnet.robotics
Date: 
Wed, 12 Jan 2000 21:24:59 GMT
Original-From: 
The WordMeister <dwilcox@=ihatespam=wordsmithdigital.com>
Viewed: 
676 times
  
What about a series of drive wheels each set geared at increasing RPMs? • You
could use two wheels per stage opposite of each other to squeeze the ball
through and accelerate it since the ball is so light.  An alternative might
only need one wheel per stage (at the bottom would give it backspin for • more
distance) and you would only need a track on the top (possibly with a • rubber
band to supply tension and a tacky surface to work against.  This is kind • of
like what they use for moving roller coasters in the station.  This might
not work at all but if it did you could really have fun with it.  There
might be some problems transferring the ball from one stage to the next. • It
might be possible to offset stagger the wheels so you could put them closer
together or use pairs of the very narrow pulley-wheels and interleave them.
The ideas are endless...


I like the idea of using wheels to accelerate the balls. I believe when I
was a kid one of my friends had a Hot Wheels car wash or somethingorother
that used the same concept to move the little cars around a Hot Wheels
track. Certainly worth trying. I think the balls are so light, though, that
using several sets of wheels might be pointless--it's not like having to
accelerate a large mass.

Thanks!

--Doug Wilcox



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