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ITSA General Assembly: December 5th - 12th

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 on: Today at 11:04:02 AM 
Started by ta0 - Last post by Jospin
Jose play more than 4min for his freestyle?Is there any mistake by music person?or 4min is rule?Other player play just 3min,i think.

I do not want to make any argument for results,but did not realize until I saw video.
Woah, I didn't even notice... That's quite the shakeup.

 on: Today at 10:05:29 AM 
Started by Pepe - Last post by butterfingers
I forgot to post these when they arrived. Purchased from David  - a forum member who shipped them from Spain! It looks like he took down the original post. 

2 turbo iron silver (used) 2 Strummol8 (like new!). All work very well so they will be fun to throw around. I'm very pleased to have them.

The Turbo Iron silver tops are quite nice and the bearings are supernaturally smooth and spin for a very long time.

 on: Today at 09:10:42 AM 
Started by Trip - Last post by Trip
Thanks guys! I'll try that out this afternoon!

 on: Today at 08:16:02 AM 
Started by Pepe - Last post by paxl13
This is AMAZING!!!


that said, I'd have loved to have the bottom varnished or at least some oil on the bottom. Now there is stain of grass and dirt!!!

It plays so much differently than the paper one!!!

 on: Today at 04:42:57 AM 
Started by andydecleyre - Last post by Jeremy McCreary
Anyone: Confused now about the IKEA bowl's inner surface. How smooth is it?

 on: Today at 03:05:56 AM 
Started by andydecleyre - Last post by Jeremy McCreary
We got started on this bowl from this classic spinning top circus video.  I think johnm was the one who pointed me to the IKEA sale.....

Thanks, Mike! Never tire of this video. Will be ordering one of those bowls. Maybe it's shallow enough for the forward rolling regens ta0's interested in. Just hope it's steep enough to contain the high-speed reverse rolling regens I've been doing with my steeper bowl...

 on: Today at 02:56:13 AM 
Started by ta0 - Last post by the Earl of Whirl
Gulp!!!  Four minutes???  Oh my!!!  Oh oh!!!

It is the middle of the night here.  I woke up from some crazy dreams.  Now I wonder, is this another bad dream?  I am pinching myself.  I think this is real life, but.....yes, this is incredible.

Good eyes, Taka.  I was there when Jorge was moved from second to third and Takeshi from 3rd to second.  It was done so quietly and so smoothly that many did not even notice.  Anyway, I need to try to go back to sleep......without any more nightmares!!!

 on: Today at 02:19:19 AM 
Started by Jeremy McCreary - Last post by Jeremy McCreary
Recently posted a LEGO version of "rolling regeneration" (RR) on a flat surface. This time, I adapted some of the same tops for RR in a bowl.

Note that at max speed, the top rotors are generally above the bowl. The tips are doing all the rolling.

I call this fun and interesting top+bowl+user system a "gyrocyclotron." It is, after all, a gyroscopically stabilized high-energy top accelerator. The cyclotron metaphor even has a kernel of truth.

The bowl turns out to change the whole RR dynamic. The pumping motion is now horizontal instead of vertical, and the energy transfer from user to bowl to top is much more efficient. Even better, the tip noise changes to an entertaining turbine-like whine (e.g., 2:00) that also helps you gauge the top's orbital speed and spin rate -- e.g., to keep the top in the bowl. The height of the top in the bowl is another valuable speed cue.

When you purposely spill the top onto the table, the gyrocyclotron becomes an outside-the-box (outside-the-bowl?) top launcher! (8:07)

If nothing else, watch and listen to how the small top at 6:38 ends its spin.

Details in video description and here and here on the forum.

 on: Today at 02:01:45 AM 
Started by ta0 - Last post by CUPER
Hay 2 con 4 to.lugar deverias checar de una vez todos detalles Saludos..

 on: Today at 01:32:47 AM 
Started by ta0 - Last post by ta0
Has there ever been a situation like this before? Is this a first for the spintop community?
At Worlds 2007 I was announced as the second place during the awards ceremony. A few minutes after the ceremony ended, the judges told me there had been a mistake in adding the scores and I was really third. I exchanged awards with Takeshi.

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