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Messages - bourgeois.jason

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Gear / Re: Circus Too Heavy For Whip/Snap/Thrust Spin-up?
« on: January 15, 2010, 04:34:17 PM »
I would recommend that you stick to some less aggressive wrapped accelerations for a while.  The secret to whip accelerations is a smooth motion.  You need to focus on keeping the string tight or else it will wrap around the diabolo.  Also, if you do it right, there should be minimum shock to the string.

It is true, however, that Circuses are among the heavier of diabolos, but many people use diabolos of the same weight.  I prefer a lighter one, like Finesse.  When I use my Circuses, my forearms quickly get tired.


Tutorials / Re: yoyo variatons (i think)
« on: January 14, 2010, 06:07:14 PM »
I left yo-yo's over 8 years ago.  I still take them out every so often, but I'm what would be considered old school.  I was yo-yoing when "cold fusion" was consideded one of the hardest tricks.  Wow, I'm getting really old!

I basically learned diabolo by trying yo-yo tricks on my diabolo, but I haven't really explored any yo-yo tricks in years. :(


General / Re: Vertax is rubbish
« on: January 14, 2010, 02:22:21 PM »
Because I enjoy performing, I practice what I know will please a crowd.  Vertax, even if it's simple, generally pleases a crowd of non-diaboloists.  To please a crowd of diaboloists, the vertax skill needs to be at a certain level that I have not attained, yet.

I say that to make this point... If practicing vertax helps you achieve your diabolo goal or goals, it is not rubbish to you.  My goal is to please whatever crowd I am in front of, and vertax helps me achieve that goal.

If you like vertax, keep doing it.  If you don't like vertax, keep abstaining.  It makes no difference to me. :)


Videos / Re: 4 diabolos high trapeze start
« on: January 13, 2010, 10:30:36 PM »

I think it's amazing that you can do 4D high.  Regardless of how many others can do 4D, it must have been really exciting for you to learn!  I like the start.  Don't let everyone's comments get you down.  I think if we were all sitting around a coffee table, we'd all congratulate you on your accomplishment, even though it's not as technical as Arjan's.  I don't think anyone's tone is meant to insult.  They are just stating their opinions.  The bottom line is that as long as you are pushing your skills to the next level, you should be proud of what you're doing.

Now, to give props to Arjan, I can't say that this start is as impressive as his or as flashy.  4D is amazing by itself, but Arjan took it to another level.  I doubt anyone else will be landing Arjan's start for some time.


Videos / Re: Sharpe Brothers Slow Motion
« on: January 13, 2010, 05:54:54 AM »
Nate... sorry about getting your name wrong. :embarassed:

Videos / Re: Sharpe Brothers Slow Motion
« on: January 12, 2010, 09:44:47 PM »
And by the way... Nick is pretty ripped up!

Videos / Re: Sharpe Brothers Slow Motion
« on: January 12, 2010, 05:52:07 PM »
You guys are insane!!!!

Thanks for posting this.  I'll get right to work on the four knives thing.  Maybe I can get my brother-in-law to let me stand on his shoulders...

Performing / Re: How Many Professionals are there?
« on: January 12, 2010, 05:16:31 PM »

I'm glad to hear that you're getting the exposure and experience that circus performing can give a person.  It seems that you have done as much as anyone to advance diabolo to the general public.  After AGT, diabolo sales in Australia probably tripled.  Your performances at AGT were amazing, so I'm sure that you are a big crowd pleaser in the circus.  Lots of kids dream of running away with the circus, but you're actually doing it!  Congratulations!


Gear / Re: Diabolo for 2d.
« on: January 12, 2010, 03:08:20 PM »
That's funny!  :-D

Gear / Re: Diabolo for 2d.
« on: January 12, 2010, 02:24:37 PM »
I learned with some really cheap pieces of junk.  I don't know what happened to them, so I can't say what they were.  I then moved to Circus.  They were great, but I rather Finesse G3 because they are easier on my forearms.  I have 4 G3's now and just ordered 2 more.

I recommend you stay with the Finesse, but I can't say how they play with the extended axels because I've never tried them that way.


Community & Events / Re: Happy birthday
« on: January 11, 2010, 04:55:01 PM »
Happy Birthday, Sean!

Tricks / Re: How high could you make a elevator go?
« on: January 11, 2010, 04:09:44 AM »
Yes, I have a degree in Mechanical Engineering and work for Oceaneering Space Systems, one of NASA's contractors.  We are designing and building the next space suit for NASA.  They contract out all of their stuff, so I'd rather work for one of their contractors, since that's where all the design happens.

If you read the article and wonder why it seems as though the deal isn't final, it's because all of the paperwork wasn't signed, yet.  Don't worry though, we have the contract.

I was trying to figure out a way to get a video of me diaboloing while in the suit, but I think I'd get fired for that stunt.


Tricks / Re: How high could you make a elevator go?
« on: January 08, 2010, 01:23:12 AM »
We first have to make a few assumptions.

1) we can spin a diabolo with weighted rims at the same angular velocity as one without weighted rims
2) we don't account for energy loss due to air friction or the string rubbing itself on the backside of the wrap
3) we don't add so much weight that it becomes counterproductive (a few pounds or so)

Anyway, I actually drew up some free body diagrams to explain the situation a bit more, but I left them at work and didn't go in today.  It is true that more energy would be required to lift a diabolo of greater weight, but we can assume that we won't add so much weight that it would be counterproductive.

I'll try to scan in my diagrams and include the formulas that would be required to find the climbing height.  These are the variables that you would need.
-angular velocity
-diameter of diabolo
-diameter of axle
-static coefficient of friction between the string and the axle
-kinetic coefficient of friction between the string and the axle
-moment of inertia of the diabolo (which would require a good amount of analysis.  we could assume that the weight is distributed at the middle of the steel ring we added.  it wouldn't be accurate, but it could be good enough for our purposes)

To be honest I just thought about it and realized that it would require some Calculus to get it accurate.  You'd have to figure the change in angular velocity as the diabolo climbs.

Anyway, sorry to bore most you you.

This discussion shows that adding weight to the center of the diabolo (Finesse Evo kit, etc.) doesn't do much for the spin duration.  It just makes the diabolo feel more solid.


Tricks / Re: How high could you make a elevator go?
« on: January 06, 2010, 05:04:33 AM »
Except you can't switch the Phoenix while it's in play.

The best path would be to use a light diabolo (Finesse G3, or such) and modify it with some steel weight rings on the rims, which would allow for a greater angular momentum at a given angular velocity.  This would allow a higher amount of kinetic energy to be transferred from the spin to the climb and eventually totally to potential energy, when the diabolo reaches the very top of its climb.  At that point, there is only potential energy.  A diabolo with weight concentrated towards the center would not have as much angular momentum while rotating at the same angular velocity (the rate of rotation); therefore, it would not reach the same level of potential energy (height).

Much more technical information can be delivered on this topic, but I think it may bore some people.


General / Re: Eric Longequel Profile on The Juggling Equipment Blog
« on: December 22, 2009, 09:09:23 PM »
Definitely a disappointment. :(

General / Re: Christmas lists
« on: December 22, 2009, 03:16:37 PM »
-2 blue Finesse light kits
-Diabology Video
-Not sure what my wife's getting me, but I think it has something to do with diabolo :)

General / Re: Nate Sharpe Interview on The Juggling Equipment Blog
« on: December 16, 2009, 03:45:52 PM »
That was a great interview.  It was short and sweet and to the point.  Thanks for posting the link, Sean.

The Sharpe's passing with the Shilton's would be the best moment in diabolo history!


General / Re: Your worst moment in diaboloing
« on: December 15, 2009, 05:58:57 PM »
Several weeks ago, I performed outside in 15 mph wind.  It was very gusty, so there was no reliable way to compensate.  I made the mistake of trying a few high throws.  None of them worked.  The performance pretty much stunk!


General / Re: Centrifugal force calculations - JOY!
« on: December 04, 2009, 06:46:30 AM »
I have a degree in mechanical engineering and am working on the next generation space suit for NASA. I'll think about it and ask some coworkers and respond tomorrow.

Tricks / "Tricks" vs. "Highly Complicated Moves"
« on: November 30, 2009, 08:52:48 PM »

I was explaining a trick to my coworker a few weeks ago, when he interupted me with this question, "Why do you call it a 'trick'?"  He went on to say that he was offended when someone referred to his martial arts moves as "tricks" and that the word "trick" implies that we are fooling people by "tricking" them.  It basically puts it on the same level as card "tricks", many of which don't require any skill and can be taught in 5 minutes.  I agreed.  We don't do "tricks", we do "highly complicated moves" that require skills that can only be honed through countless hours of diligent practice.

I know nobody will change what you call the moves you make, but I thought some of you might like to ponder this point and leave comments of your own.


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