Naming the throws

Ill leave the name finding procedure to you, but it would be really usefull to have good distinguishable names for the basic 2 different throws:

1 Throwing and the Poi changes direction when catched
2 Throwing and the Poi spins in the same direction
(3) Throwing and the Poi stops/stalls . . .

thx a lot in advance

Sphism/smilesmiley

Comments

Well you have a half throw which spins round less than one rotation and reverses direction when you catch it.....the progression is like this but my terminology is a bit off, i never speak about this stuff so i need no language for it y'know. Any Club jugglers about that can clear the terminology up for us.

This is Wrong
1/2 throw: spins 180 then 'reverse' catch

1 throw: spins 360 then 'continue' catch (continue = same direction???)

1 1/2 throw: spins 540 then 'reverse' catch

2 throw: spins 720 then 'continue' catch

etc.

EDIT********
This is Correct

If you Release the poi from horizontal:

1 throw: spins 360 then 'reverse' catch

1 1/2 throw: spins 540 then 'continue' catch (continue = same direction???)

2 throw: spins 720 then 'reverse' catch

2 1/2 throw: spins 900 then 'continue' catch

etc.

Note that the exact 180 degrees and so on are for guidance only, it's very hard to get them bang on.

¦m¦

shure ???

The "normal" throw has a "full rotation" and one can catch it either spinning different direction or same direction.... imo

^^^ I agree.

But if you catch it so it spins the other way then it hasn't done a full rotation.

I never called them this until i started doing the 1 1/2 and 2 throws (i know 1 throw should be 'single' and 2 throw should be double but then what d'you call a 1 1/2 throw)

Plus the ammount that they rotate is slightly dubious because it all depends at which point on the orbit you release the poi.

Perhaps a definition such as 'throw+' and 'throw-' would do the job for catching in the same direction (+) and catching so the poi reverses (-)

What about the doubles and trebles??

¦m¦

Quote:
But if you catch it so it spins the other way then it hasn't done a full rotation.

Play backwards ->
release the Poi at 9oclock (pointing straight away from you) ->
Dont move your hand ->
Poi is rotating one time ->
Catch it again at 9oclock ->

Poi has done a full rotation and is spinning in the opposite direction

imho

actually matt, umm.. if your hands are moving clockwise when they connect with a counter clockwqisemoving handle.. the poi end up going back the other way.. kinda like a stall but you don't really notice the stall because it goes form a sort of free fall back into motion..and doesn't get a whip effect like you think it would, but rather a smooth transition into the other direction.. it pisses me off too.. because this is what happens a lot of times on my throws.. which is part of what stopped me doing them to begin with.. always having to wrap after I throw to get the direction i should be going..

Hold on before I start talking, what are we trying to decide? What to name a throw or what throws can do I'm confused

Does it really make any sense to name throws? I mean a) if you can catch it and go in either direction and b) a move where you throw it and it does one revolution can be done with 2 revolutions, 3 revolutions etc and still be the same... then is a formal naming method needed?

Quote:
Play backwards ->
release the Poi at 9oclock (pointing straight away from you) ->
Dont move your hand ->
Poi is rotating one time ->
Catch it again at 9oclock ->

Poi has done a full rotation and is spinning in the opposite direction

Yep you're totally right :oops: That has totally fixed the glitch I had, couldn't quite figure out throws because i was always considering 1/2 a revolution to change direction.

But I only release the poi at 12 o'clock, that way you get a real clean isolated throw. Then (to use the clock analogy) and 1 full revolution to 12 o'clock:

:arrow: you catch the poi 3 hours early if you wanna reverse the spin or

:arrow: 3 hours late if you wanna carry on in the same direction or

:arrow: 6 hours early or late if you wanna stall downward.

I'm sure there must be some club juggling terminology out there for all this, although with clubs you can alter the rotation manually.

¦m¦

SO i've edited another post up ^^^

But I tend to agree with spiralx that we don't need to really name them so rigidly.

I mean you can throw the poi as if to reverse catch it, but then you can give it a massive isolated movement and continue it spinning in the same direction.

So all that really matters is which way you want it to spin when it lands. Then you can catch it early or late to get what you want.

[BHBTBZS: you've just totally sorted out the problem i was having with timing, couldn't figure why my continue catches seemed to take longer than 1 spin, causes me to extend the other poi out to slow it down. Now i realise this is because it's 1 1/2 spins. Cheers]

¦m¦

I get the impression this thread is going deeper than just naming. Probably we should discuss the physics of throwing first . . . probably not in EO ?!?

to start :

Quote:
But I only release the poi at 12 o'clock, that way you get a real clean isolated throw.

- Is releasing at 12 or 6 the only one not possible -> the Poi would fly away horizontal ?!?
- What is an isolated throw ?

thx and cheers back !

Hit this Link

See how on a couple of the throws the poi head flys off to the left but on a couple the poi head pretty much just floats in front on my face ~ the latter is isolated.

Also notice that I let go of the handle when the head is at 12 o'clock, [pretty hard to see at low res with no slow mo i know] But as i release it i'm accelerating the handle off to the right (as you look at it) this accelleration stops the poi head dead in its tracks and the handle flys around it and back to my hand.

These vids were made soon after i figured you could isolate throws and aren't particularly good examples.

A perfectly isolated throw would have a center of rotation which does not move through the air at all

enjoy,

¦m¦

Hmm ok I get what's going on here

Interesting. I'm good at throws but I never considered the revolutions and stuff it makes, only really paid attention to timing and placing. Good, shows me I've got alot more things with tosses coming Sphism/gigglesmiley

Seems as tho this has kinda been wrapped up so....

Ok - so here we go . . .

Throwing Theory:

If you throw a Poi it always rotates around its balance Point.
You cannot alter that Point. Only the speed the Poi rotates around it.
The Balance Point is describing a parabola.
The direction the Balance Point is flying depends on the point where you release it.

(
Thinking about playing clockwise, wallplane.
Everything between 12 and 6 oclock and the Poi is flying down.
At 12 oclocl the Poi is flying staight to the right.
At 6 oclock the Poi is flying straight to the left.
Between 6 and 9 the Poi is flying to the left.
At 9 oclock the Poi is flying straight up.
Between 9 and 12 the Poi is flying to the right.
)

I am playing with heavy Poi heads and a heavy chains.
Due to their high air resistance Sock-Poi have a different behaviour.

my 2 cents

Quote:
1: If you throw a Poi it always rotates around its balance Point.
2: You cannot alter that Point. Only the speed the Poi rotates around it.
3: The Balance Point is describing a parabola.
4: The direction the Balance Point is flying depends on the point where you release it.

This is certainly true in theory if you are using heavy poi head, negligable weight poi body and a light handle.

I've thought about point 2 a lot, because i totally agree with you in theory but in practice I'm pretty certain you can alter that point by releasing at 12 o'colock and flicking the handle sideways to cancel out the sideways velocity of the poi head. This action seems on observation to pull the center of rotation closer to the poi head. I've pondered this a lot and can only assume that there are some extra forces coming into play, IMO there must be some Gyroscopic effects which are complicating the simple physical system described above. I could never get my head around the mechanics of gyroscopes becasue the maths involved deals in imaginary numbers (square root of -1), all i know is that they complicate matters enormously. (Side note, it was gyroscopic mechanics :evil: that made me drop my further mechanics AS level)

point 3 is true and the precise size of that parabola is dependant on the speed and direction (velocity) of the poi head as it leaves your hand. So if you release the handle at 12 o'clock then the velocity is fast sideways and the balance point follows a trajectory according to that. However if ~ just a split second before you let go ~ you accelerate the handle very fast in the opposite direction, i.e with the same momentum as the poi head but in the opposite direction then you reduce that sideways velocity to zero and voila, you have an Isolated Throw because the parabola you form has no horizontal movement.

If you then release just before 12 o'clock then the poi head has a little upwards velocity as well which counters the effect of gravity a little. So you can shorten the vertical distance the poi head moves. Then if you really accelerate the handle round then the poi head really does Float in front of your eyes. ie you are reducing the parabolic trajectory to negligable size.

It's all very peculiar,

¦m¦

Now we are talking Poi !

The word that I stumbled across in your thread was flicking. I absolutely know what you mean with it.
The question is now in how far that flicking changes the physics of the throw ?!?
My personal feeling tells me - it does only influence the "point of release" in an indirect way and the speed of rotation.

But thinking about it is definitely worth it - this way you could for example "save" a 3 oclock throw - which i never tried so far. I really start liking this thread !

Flicking against the momentum vs. Flicking with the momentum

Gonna post more tomorrow ...

Btw: I dont think any gyroscopic forces can be found within Poi - did my major in Physics and this is what my feeling tells me.

Nice

I'm having some thoughts here though.

Matt, you talk alot about accelerating the handle which does indeed give a differant toss. But there is more that you can do which alters it and that I do far more often than accelerating. (I am not good at the whole clock analogy so bear with me here)

Ok so you've got what would be an isolated toss by accelerating the handle, just floats past your face.

But now say your in the wall plane, outwards with the right poi. On the down swing, have it about to toss up from under neath your left arm. It gets about hmm should say 9 oclock, close anyway, and instead of just tossing it or accelerating the handle, you pull BACK on the handle just slightly. Instead of flicking it forwards you flick it -back- just a tad. If you'll work with it you can see they do differant spins. For one, it keeps them closer to you. A slightly lower plane, and just leaps right back to your hand. When done nicely can do an isolated toss, but it definitally looks differant from accelerating vs pulling.

The funny thing is, it almost seems to speed up the spin in a way. You would think it would slow it down, but instead, when you pull it just slightly, not stalling just kinda a little yank, when you end up letting go it's almost like the entire toss speeds up 2 beats, and you can do a good 2 or 3 revs and it's just right infront of your face instead of going high. Also like during a more release style you can pull it back just slightly (which is what changes it from a release) and it makes a mini circle, not a toss which is the handle and the poi doing almost a bicycle wheel effect, but a release in a toss style if that makes sense . It doesnt continue the direct path of the poi but does a smaller version around whatever you are releasing it near, so it makes a small circle but keeps the release look to it. But again since you altered it it's not a TRUE release, but perhaps this is like bounce wraps and recoil wraps. Either way they wrap but just in differant styles

Theres also another kind that is a toss, its where you release it with a slight pull back right next to your arm, isolate that ARM , so your doing isolation movements but the string bends with the arm and does a good 2 or three revs super fast off of it and lands right back where it should like a normal toss, but it stays like right at your stomach doing these circles.
I cant put it in the way ya'll did, cause again I dont do much with clock analogys but if nothing else here's some thoughts concerning this.

Btw, nice to meet you..Guest Sphism/gigglesmiley You been around here long?

-Poikid-

to get back to the naming of throws rather than the physics of, i was thinking about what parts of the throw are needed to be included in the name?

1) release area
2) catch area
3) number of revolutions
4) change of spin?
5) direction of spin at start?
6) release hand
7) catch hand

1+2)My first idea is how about naming the throw and catch separately. Surely this makes more sense as the throw can leave from a multitude of places and then be catched in many different places also.

3)The number of spins seems not to have an effect on anything about the other variables according to everyone above, right? So should be accounted for separately if at all... does anyone need to be told the difference between a throw with 2 spins and a throw with 1?

4)The change of spin is key to flowing into and out of the weaves or b-flies and so would be important to note in some way, probably in the catch half somehow, maybe a - sign for shorthand, can't think of a good term except reverse catch.

5)The direction of spin for many throws seems predetermined.
eg. for throws from right hand under the left arm the poi need to spin outwards.
This doesn't hold true for all throws though as you can do either direction throws just in front of or at the side of the body.

6+7) Each throw can be done from the left or right hand and can be catched by the same hand or by the other. If done by the other there's a pass or ANOTHER throw to be counted

From this thinking it would seem that naming throws in a purely structural way would be a waste of time and effort as there will be 7 distinct parts to each name...
Throw hand+location+direction of spin
Number of spins
Catch hand+location+direction of spin

for a move which takes less than a coupla seconds it seems a little extraneous to call it an:
righthand throw outwards behind the back with 4 spins caught lefthand reversed over the right shoulder...

Or in my shorthand:
RHTOBTB(4)-LHCORS

I think I've only seen one example of actually named throws thanks to poikid with her fountain throws which is basically a 2 ball juggle -> maybe juggling already has the names we need

Sphism/winksmiley PoLLeNSKi Sphism/winksmiley

The shower throws I actually was told of by Matt Sphism/smilesmiley

And real quick the reason for my post was because there were alot of throws and releases not mentioned to be named Sphism/winksmiley

But as for shorthand don't we always do that?? Like btb fwd 3bt wv type stuff Sphism/smilesmiley So yah I'm up for that but I think we'd do that anyways

Just a quick note to say that 'accelerating the handle' means (to me) that you change the speed and direction the poi handle moves. That means you can speed it up or slow it down, it's all acceleration, just positve and negative.

I still think there is something gyroscopic about all this stuff. If not then the theoretical physics just doesn't feel like it works.

But i dunno.

¦m¦