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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@wordsmithdigital!Spamless!.com>
Viewed: 
2133 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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