31 Mar 2006 11:07:34
Seerzy
new juggling thingymabob

Hey all rec.juggling users

I made the maddest balls today. I just had to tell someone who would care.
They are those balloon ones but they are filled with a liquid. This is no
ordinary liquid. It is like quicksand almost. When handled with slow
movements it will just run like water. But hit it with a jackhammer as
hard as you can...........well it can take it. No cracks or anything. I'd
explain but people would stop reading. So this helps ALOT. I can throw it
as high as i can and most of the impact is absorbed. If you drop it, it
wont roll away. If you drop it at 100miles an hour it wont splat. But if
you squeeze it, it's just like squeezing a waterbomb.(but it wont pop)

So i made 1, but i wanna make alot more but its gettin late and im too
busy raving on about "my balls"................

Cya all -Michael

----== posted via www.jugglingdb.com ==----



31 Mar 2006 11:28:35
popstar_dave
Re: new juggling thingymabob

Seerzy wrote:
> Hey all rec.juggling users
>
> I made the maddest balls today. I just had to tell someone who would care.
> They are those balloon ones but they are filled with a liquid. This is no
> ordinary liquid. It is like quicksand almost. When handled with slow
> movements it will just run like water. But hit it with a jackhammer as
> hard as you can...........well it can take it. No cracks or anything. I'd
> explain but people would stop reading.

No, I'm sure there are plenty of people here that'd be interested in this
new style of ball.
Dave

>So this helps ALOT. I can throw it
> as high as i can and most of the impact is absorbed. If you drop it, it
> wont roll away. If you drop it at 100miles an hour it wont splat. But if
> you squeeze it, it's just like squeezing a waterbomb.(but it wont pop)
>
> So i made 1, but i wanna make alot more but its gettin late and im too
> busy raving on about "my balls"................
>
> Cya all -Michael
>
> ----== posted via www.jugglingdb.com ==----



----== posted via www.jugglingdb.com ==----



31 Mar 2006 12:47:20
Rory Parle
Re: new juggling thingymabob

popstar_dave wrote:
> Seerzy wrote:
>> Hey all rec.juggling users
>>
>> I made the maddest balls today. I just had to tell someone who would care.
>> They are those balloon ones but they are filled with a liquid. This is no
>> ordinary liquid. It is like quicksand almost. When handled with slow
>> movements it will just run like water. But hit it with a jackhammer as
>> hard as you can...........well it can take it. No cracks or anything. I'd
>> explain but people would stop reading.
>
> No, I'm sure there are plenty of people here that'd be interested in this
> new style of ball.

I took that statement to mean that people would get bored if Seerzy
explained the physics behind a non-Newtonian fluid (which would align
quite well with my experience).

If you want to see what a ball like this is like then you could probably
make one with a balloon full of custard. I'm not sure what consistency
you'd need the custard to be, but it's cheap enough that someone with
enough time could experiment with it.

I can't say I can immediately see the benefits of juggling with such a
ball though.

--
Rory Parle
http://www.soylentred.net/


31 Mar 2006 12:27:14
Guy G
Re: new juggling thingymabob

Rory Parle wrote:
> popstar_dave wrote:
>> Seerzy wrote:
>>> Hey all rec.juggling users
>>>
>>> I made the maddest balls today. I just had to tell someone who would
>>> care.
>>> They are those balloon ones but they are filled with a liquid. This
>>> is no
>>> ordinary liquid. It is like quicksand almost. When handled with slow
>>> movements it will just run like water. But hit it with a jackhammer as
>>> hard as you can...........well it can take it. No cracks or anything.
>>> I'd
>>> explain but people would stop reading.
>>
>> No, I'm sure there are plenty of people here that'd be interested in this
>> new style of ball.
>
> I took that statement to mean that people would get bored if Seerzy
> explained the physics behind a non-Newtonian fluid (which would align
> quite well with my experience).
>
> If you want to see what a ball like this is like then you could probably
> make one with a balloon full of custard. I'm not sure what consistency
> you'd need the custard to be, but it's cheap enough that someone with
> enough time could experiment with it.

Or cornflour + water, if I remember my How2 days correctly.

> I can't say I can immediately see the benefits of juggling with such a
> ball though.

Me neither. There's an obvious downside to it bursting though.
Guy


31 Mar 2006 11:11:53
monotone2k
Re: new juggling thingymabob

Cornflour and water would work just fine.
Something along the lines of one part water to 2/2,5 parts cornflour.

I think custard works in the opposite way... the cornflour mix gets
thicker with any shock applied, whereas the custard gets thinner.

And the benefits of such a ball... it's supposed to have odd properties
when thrown. If not contained, it would form a flat disc rather than
staying spherical... but I'm guessing that if contained in something
along the lines of a few layers of rubber balloons, it would always
return to a near spherical shape when in flight.
Also, I find that it's easier for me to catch a tougher ball than it is
to catch a soft ball... the liquid thickening when shock is applied
would mean that you always end up catching a tough ball, but have a
soft, flexible ball in your hands by the time you're ready to throw.
Best of both worlds?



31 Mar 2006 22:55:25
Rory Parle
Re: new juggling thingymabob

monotone2k wrote:
> Cornflour and water would work just fine.
> Something along the lines of one part water to 2/2,5 parts cornflour.
>
> I think custard works in the opposite way... the cornflour mix gets
> thicker with any shock applied, whereas the custard gets thinner.

Not so. Custard solidifies on impact.

> And the benefits of such a ball... it's supposed to have odd properties
> when thrown. If not contained, it would form a flat disc rather than
> staying spherical... but I'm guessing that if contained in something
> along the lines of a few layers of rubber balloons, it would always
> return to a near spherical shape when in flight.
> Also, I find that it's easier for me to catch a tougher ball than it is
> to catch a soft ball... the liquid thickening when shock is applied
> would mean that you always end up catching a tough ball, but have a
> soft, flexible ball in your hands by the time you're ready to throw.
> Best of both worlds?

Odd. I find that harder balls will bounce out of my hands instead of
being caught, so flexible ones are easier to catch. I don't know which,
if either, I would find easier to throw. If I had to guess I'd say a
solid ball is easier to throw because it will roll off your hand more
predictably.

--
Rory Parle
http://www.soylentred.net/


31 Mar 2006 14:08:57
monotone2k
Re: new juggling thingymabob

Perhaps I'm wrong about the custard, I just always thought it was a
thixotropic substance much like ketchup is. Maybe the consistency makes
a lot of difference.

And as for hard/soft for throwing and catching, I guess a lot of it
comes down to personal preference.
I like to catch a harder ball so I can feel exactly what's going on (I
can catch my Henrys Superior every time, but normally drop the Thuds
I've owned three times as long).
And again, it's probably just me, but when I throw a harder ball it
seems more affected by knocks, whereas the flexibility that softer
balls offer absorbs any errors in the throw, just as softer balls are
less affected by collisions mid-air.

Anyone else have varying opinions on this? Surely I can't be the only
one that's the 'wrong' way with juggling, there must be others that
find hard balls easier :D



31 Mar 2006 15:18:35
monotone2k
Re: new juggling thingymabob

It sounds like you've got some quite well made balls then, considering
the materials you used. The tape is probably an excellent idea, I
wouldn't want to imagine the mess that cornflour would leave should
they burst! :D

Just out of interest, why did you decide to make your own? Are you just
beginning and wanted something cheap, or are you more experienced and
wanted something that better suited you?

mono



01 Apr 2006 11:32:18
Jay Linn
Re: new juggling thingymabob

Seerzy wrote:
> Hey all rec.juggling users
>
> I made the maddest balls today. I just had to tell someone who would care.
> They are those balloon ones but they are filled with a liquid. This is no
> ordinary liquid. It is like quicksand almost. When handled with slow
> movements it will just run like water. But hit it with a jackhammer as
> hard as you can...........well it can take it.

<snip >

There is a long and obscure name for materials that exhibit both
liquid and solid properties under differing conditions. Can anyone
remember it? I think Potty Putty is probably another example, albeit
rather different in it's properties from custard/cornflour type
preparations.

Ah. Wikipedia suggests 'viscoelastic' from this article -
http://en.wikipedia.org/wiki/Potty_Putty

Potty Putty/Silly Putty probably wouldn't be ideal for juggling balls,
though - it bounces on sudden impact, and slumps if left to it's own
devices. I wonder what it would do if wrapped in balloon skins?

--
Jay Linn

"I ache for the touch of your lips, dear
But much more for the touch of your whips, dear"
- Tom Lehrer, The Masochism Tango


01 Apr 2006 07:50:54
monotone2k
Re: new juggling thingymabob

The putty toys work in the same way as Seerzy's cornflour mix. When a
larger force is applied, the resistance to that force increases (ie,
the substance gets tougher/bouncier the harder you hit it).

Rory alreay mentioned quite correctly that it's to do with
non-Newtonian liquids. These have a wide variety of odd properties...
varying from dilatant (thickening under force, such as cornflour mix
and putty), to pseudo-plastic (thinning under force), and all other
kinds of variants where other factors like time are involved.

For a more detailed description of this, there is a Wiki article at
http://en.wikipedia.org/wiki/Non-Newtonian_fluid

I think Seerzy has the right idea... a ball that won't bounce away, but
keeps a regular shape whilst in the air, and he also took precautions
to stop cornflour stains throughout his home :D
Would love to see how a ball filled with putty would work though,
perhaps a cheap way to make basic bounce balls? Or at least amusing to
hand to a beginner :P

mono