Author Topic: Powell's Power Pendulum (Read 10452 times)

1quasar1 · « **on:** April 16, 2009, 12:27:02 AM »

Hello everyone. I have been a member of this forum for a few years now as Cyclops but have had some trouble with my computer and have not been able to log in due to pass code issues. I now have a new address and I'm Back.

I would love you all to check out my machine on http://www.youtube.com/user/1quasar1 and review it critically.

I hope you enjoy

Dave

Justalabrat · « **Reply #1 on:** April 16, 2009, 01:30:29 AM »

I don't have a critical review, but I must say it's a neat looking device!

justalabrat

1quasar1 · « **Reply #2 on:** April 16, 2009, 02:12:42 AM »

Hey thanks justalabrat. I'm working to get a machined version with precision bearings. I am also looking at reducing the number of generators from 4 to two. maybe with synchronous gear motors as possible replacement.

Philip Hardcastle · « **Reply #3 on:** April 18, 2009, 06:11:31 AM »

Hi Dave,

What do you want reviewed?

I saw the video.

A pendulum, nicely and intricately built, but so?

What is it you are showing?

Phil

1quasar1 · « **Reply #4 on:** April 18, 2009, 04:35:40 PM »

Thanks for the kind reply Philip. Guess I'm just looking for any Ideas that might improve my set up or even stop me before I hit the wall I can't see ahead.

Philip Hardcastle · « **Reply #5 on:** April 18, 2009, 04:43:03 PM »

hi,

I am only too happy to help or advise or give input.

what is your goal?

Is it an energy device or a means of converting energy from say wave action to electricity?

phil

1quasar1 · « **Reply #6 on:** April 18, 2009, 06:48:34 PM »

I would say my goal is not as well defined as it should be. A while back I noticed how well a baby swing moved weight and consumed very little energy. It seemed to me that there should be some way to covert this to power generation. After seeing Milkovicâ€™s device I felt encouraged to make a working model of my idea.

Improving efficiency of what I have I suppose.

My limited education leaves me ill equipped to make valid arguments in this forum so Iâ€™m stuck with trial and error and any advice I receive. There are â€œto meâ€ obvious problems without deductive capacity or a fat enough wallet to solve.

I can see from the tests that if I lessen the load, I get more travel of the lever and less cycles from the pendulum. So that tells me if I decrease friction, I will increase the power needed to drive the pendulum. If I increase the load I loose distance. If I increase the gear ratios, gear lash and friction are greater.
I accept your offer
Thanks
Dave

Philip Hardcastle · « **Reply #7 on:** April 19, 2009, 05:56:47 AM »

Hi 1quasar1,

I think you are right to find the pendulum a thought provoking device.

It does have a beautiful simplicity to it.

In weighing it is used as a near frictionless balance with a knife sitting in a v-groove.

As a means of transport it could be interesting if instead of a cable chair system we had pendulums that simply transfer loads a bit like Tarzan swinging in the jungle.

If the friction losses are very low then perhaps a number of such pendulums could convey cargo down a gentle slope with no power needed.

Since lots of communities need to transport from highlands to the coast for export there could be something worthwhile in a zero power consumption pendulum conveyor. It would also be a fantastic tourist drawcard.

What do you think?

Phil

1quasar1 · « **Reply #8 on:** April 19, 2009, 06:57:08 AM »

Thinking hurts my head Phil, but that felt like a 2x4 hit me.

Looks like more trial and error.
I will try and post a video tomorrow showing some of the effects I've observed.
Thanks
Dave

Philip Hardcastle · « **Reply #9 on:** April 19, 2009, 07:26:30 AM »

I'II look forward to seeing that Dave.

Phil

1quasar1 · « **Reply #10 on:** April 21, 2009, 03:42:41 AM »

Hello again everyone. I have a new video posted on YouTube http://www.youtube.com/1quasar1 please forgive the quality and amateur presentation. Not my bag.

I will try to get a better camera and have a better layout as soon as possible. Until then.
Thanks for watching and please feel free to comment.

1quasar1 · « **Reply #11 on:** April 21, 2009, 06:31:48 PM »

Hello Jim. It is a simple question and my answer is yes but to achieve that for me is a lofty goal. However I am quite a stubborn mechanic and not afraid of failure or criticism. The problem as I see it, is maintaining any consistent arc with variables in the load. I think that 90 degrees would be sufficient if lash and friction were reduced. As to driving the pendulum I have tried a crank and collapsing rod approach and found that the gear motor driven unloaded used as much energy as the unit put out and spiked from being push back loaded. Can't use that approach but it showed me that this will not come easy. Any advice is welcome and appreciated. I will keep trying and posting any finds.
Dave

oscar · « **Reply #12 on:** April 21, 2009, 08:03:24 PM »

Hi 1quasar1,

I hope you manage to achieve your goal.
I recently did some searching in the database of the European patent office.
And I found an oldish patent (DE3326663) and got reminded of it when i saw your set-up.
One difference to your's is, that you have the 'carriage' sliding horizontally below the pendulum whereas in the patent he has placed it above.
There also seems to be a ratchet mechanism involved to keep it going.
And as far as I understand his carriage gets tilted a tiny bit, when it is in the displaced position. But am not sure.

You probably won't be able to read it, for German not being your language, but maybe you 'enjoy' the drawings.

See at:
http://v3.espacenet.com/publicationDetails/originalDocument?CC=DE&NR=3326663A1&KC=A1&FT=D&date=19850502&DB=EPODOC&locale=en_V3
The drawings are at the end of the original document.
You can download the whole pdf document.

Good luck with your endeavors.

gyulasun · « **Reply #13 on:** April 22, 2009, 01:02:25 AM »

Quote from: oscar on April 21, 2009, 08:03:24 PM

You probably won't be able to read it, for German not being your language, but maybe you 'enjoy' the drawings.

Hi Folks,

http://v3.espacenet.com/publicationDetails/biblio?adjacent=true&KC=A1&date=19850502&NR=3326663A1&DB=EPODOC&locale=en_EP&CC=DE&FT=D

If you click on the Description icon in the Menu line under the title of the patent you will get the German text page of the patent (unfortunately with several spelling mistakes, unlike the PDF text) and you will see a Translate icon in the right hand side. By clicking on the Translate, you will receive the computer translation of the German text into English in a new page. Unfortunately the spelling problems will be 'untranslateable' to the their software, besides some technical words, but all in all it will be more useful than nothing.

rgds, Gyula

1quasar1 · « **Reply #14 on:** April 22, 2009, 01:34:02 AM »

Many thanks Oscar and Gyula. I looked at this device and I'm not sure I fully grasp the concept but I have picked the site as a favorite and will study it more. I would not have seen the translation button had you not mentioned it Gyula. Thanks again.

Dave

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