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Author Topic: 99% working wheel!!!  (Read 12975 times)

broli

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Re: 99% working wheel!!!
« Reply #15 on: August 03, 2008, 12:36:39 AM »
I don't think most people understood what I went for. Maybe ABhammer did. But I wasn't using any over balancing idea. I was trying to bend vector analysis. I think I found a way to do it now. I'd like most of you guys on some instant messaging service like an IRC channel or something. Real time talk is much more productive and helpfull.

Sprocket

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Re: 99% working wheel!!!
« Reply #16 on: August 03, 2008, 01:48:14 AM »
I'm a real rookie at this stuff but you seem to be using a vertical displacement to change the center of gravity, which is what MT_20 does - no idea what bending vector analysis entails!

@P-Motion - I also tried using 4 weights with WM2D - it appears to be even less inclined to continue rotating than the 2 weight version...

broli

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Re: 99% working wheel!!!
« Reply #17 on: August 03, 2008, 10:40:04 AM »
Using very simple rods and ropes in theory I can make a wheel that makes weights on one side invisible. Meaning you can lift them with any weight you want on the other side. Although in reality the internal forces will be ginormous, and that's what I'm currently trying to figure out how to do it in a relaxed and harmonized way :p.

PS: I'll ask AGAIN...do you guys use some instant messaging software or not! You can find me on MSN and IRC where I'll be glad to chat.

Sprocket

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Re: 99% working wheel!!!
« Reply #18 on: August 03, 2008, 04:52:49 PM »
@P-Motion - The AQ thread thas more or less convinced me that using Newtonian math, PM is indeed impossible, similarily, I believe that getting working PM with WM2D is also impossible - good for helping you visualise stuff though.  In the end, I'm going to have to bite the bullet and build it for real...

Below, an attempt at an MT_20  'helper'.  Each of the prime movers has it's own secondary weight on a pulley system, beginning at the axel.  As one rests on the other though, their combined weight is used to help the large weights 'switch'  alternately...


broli

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Re: 99% working wheel!!!
« Reply #19 on: August 04, 2008, 04:07:10 PM »
Also please share you wm2d files if you build a model guys!

Sprocket

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Re: 99% working wheel!!!
« Reply #20 on: August 05, 2008, 01:14:52 AM »
I have no problem posting the WM2D files - its just that few will have any use for them...


Sprocket

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Re: 99% working wheel!!!
« Reply #21 on: August 05, 2008, 01:22:39 AM »
Here's the 4 weight version.


Sprocket

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Re: 99% working wheel!!!
« Reply #22 on: August 05, 2008, 08:00:29 PM »
@P-Motion - nothing bigger than bicycle-wheel size!  Not sure it will be a MT_20 variant either - MT_27 seems to be a more interesting prospect.   btw, I tried combining the two on WM2D but they don't seem to want to co-operate! :D