| | | | | > In lugnet.robotics, John Barnes wrote:
>
> > Or someone who owns a soccer ball could measure
> > it and publish the size.
>
> Well, it's LEGO - it's just a tad smaller than 2 studs in diameter. If you've
> got a marble or wooden ball that will roll between two walls two studs apart
> (clearance about 1.5 mm on each side) you've got the size. The only real problem
> is weight. Regular (glass) marbles are much denser than ABS (how does wood
> compare?), so weight-activated devices (tipping platforms, counterweights) may
> be tough.
I'd really recommend against using anything but LEGO balls. If you just want to
play around and test, one good place to get a couple balls are the LEGO NBA sets.
I've seen them on sale all over.
Using any other type of balls will not give you a good test of exactly how soccer
balls will operate in a machine. I'm 100% sure of that.
Steve
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| In lugnet.robotics, Steve Hassenplug wrote:
> > In lugnet.robotics, John Barnes wrote:
> >
> > > Or someone who owns a soccer ball could measure
> > > it and publish the size.
> >
> > Well, it's LEGO - it's just a tad smaller than 2 studs in diameter. If you've
> > got a marble or wooden ball that will roll between two walls two studs apart
> > (clearance about 1.5 mm on each side) you've got the size. The only real problem
> > is weight. Regular (glass) marbles are much denser than ABS (how does wood
> > compare?), so weight-activated devices (tipping platforms, counterweights) may
> > be tough.
>
> I'd really recommend against using anything but LEGO balls. If you just want to
> play around and test, one good place to get a couple balls are the LEGO NBA sets.
> I've seen them on sale all over.
>
> Using any other type of balls will not give you a good test of exactly how soccer
> balls will operate in a machine. I'm 100% sure of that.
>
> Steve
Over time, as I gaze at my collection of parts, notably as my interests change,
and curiosity is peaked, I realise that the floccinaucinihilipilification
parts, such as soccer/basketballs, now are not only useful but in serious
demand. I guess that also means eventually I will also find uses for all those
wheels, that seem to multiply on their own, as well. Sigh.
Janey "Red Brick"
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