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Topics - Dan

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General / Centrifugal force calculations - JOY!
« on: December 03, 2009, 07:19:17 PM »
Hey there everyone.  Haven't posted in a long long time but i'm after a favour from you more clued up people out there.

I'm doing a project for my college engineering course and I want to make a modification to a Henry's Circus Diabolo to allow for single sided use.  Now I know there are alot of manufactured versions around now but the whole idea is to go through the design process and possibly manufacture a prototype myself.  I've done some research and initial designs but am completely clueless when it comes to calculating the masses involved and the centrifugal forces needed to be achieved to balance with the standard cup.

3D design is my forte but the software in my workplace just doesn't cut it for simulations due to a lacking material library  :(  So I am reaching out to fellow people in the diabolo community that might have tried this or know what they are talking about.  All advice I have recieved so far has been trial and error based but with the timescale I have (Easter 2010) I cannot afford to waste time on producing a number of prototype models.  Not too sure my employer would appreciate a pile of scrapped designs in a box  ;)

Any help or even suggestions would be much appreciated.

Thanks in advance,


General / Diabolo Tattoos?
« on: June 06, 2007, 11:17:16 PM »
This might be moving a little offtopic but i didn't want to start a new thread for something that probably I won't have much response too.

Has anyone got any tattoos relating to diabolo or juggling for that matter?  I'm just really curious to see whether anyone has or not and how it looks, etc.

Btw I want one of the t-shirts but im skint already this month so will have to wait till next payday.

mod edit: You never know who might be up for responding but this would stand a better chance on it's own than hidden in the T shirt thread

Gear / What are Henry's circus made of?
« on: November 21, 2006, 09:32:34 AM »
Basically for a physics presentation i need to find out alot of information about a material of my choice and seeing as i love diablo i thought i could simply do this.  But the problem came when i started to look at websites - they have information about what the hubs are made of, also string, but absolutely nothing about the cups of the diablo.  Yeh sure i could just go away and do another material but i think i could get a great mark with this as i can include things like LED diodes as an extra and also talk about the motion of a spinning diablo. 

So the simple question is: Can anyone tell me in detail or just give me a name (preferably the chemical composite name and not the "inventor's choice of name")?  Also if it is located on any website a link would be much appreciated.

Thanks alot,


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