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Author Topic: TD replications  (Read 155413 times)

gotoluc

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Re: TD replications
« Reply #90 on: February 10, 2017, 09:31:29 PM »
How about to slap a rudimentary crankshaft together, using the 11mm push over leverage to turn the wheel? Would probably be less timeconsuming than all measurements an defendings ^^


Yes, it's looking that way now :P


I was thinking of building a Neo magnet version next before trying a self loop these weak ceramic magnets.
If there is a gain then it may have more potential of working then a ceramic version.


Luc

dieter

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Re: TD replications
« Reply #91 on: February 10, 2017, 09:39:16 PM »
Conrad, I'm trying to be serious without to hurt you, that turns out to be a dilemma. See that's the diffrence between employed and selfemployed. Work does not mean to pretend to do something until 17h. But to deliver a quantitively precise service, like in "job done", regardless of the hour. I can't believe you studied Maths and then fail to add 1+1. Maybe disagreement is an easy way to get into a discussion, but that would be a psychological issue.

dieter

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Re: TD replications
« Reply #92 on: February 10, 2017, 09:49:30 PM »
Luc, not neccessarily. Neos have such a low volume that it appears as if their long range is weaker than with eg. ceramics (which isn't the case), only when you replace them by Neos of same volume, but then friction losses may rise to an amount that such a light construction can hardly withstand. It looks good atm, and 200g excess should be much more than enough, if the cranking losses are kept low.

conradelektro

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Re: TD replications
« Reply #93 on: February 10, 2017, 09:50:56 PM »
Conrad, I'm trying to be serious without to hurt you, that turns out to be a dilemma. See that's the diffrence between employed and selfemployed. Work does not mean to pretend to do something until 17h. But to deliver a quantitively precise service, like in "job done", regardless of the hour. I can't believe you studied Maths and then fail to add 1+1. Maybe disagreement is an easy way to get into a discussion, but that would be a psychological issue.

Come on now, self employed or employed. Of course my real life work-pause example was a Metapher.

I quit writing about Joule and Joule-Seconds because it goes by your head, which is fine with me.

You have won, you have exhausted me and therefore you are right (in your world).

Yes, you have hurt me. But not with your remark about my mathematics. You have hurt me with your lack of insight which makes the OU forums such frightful places. Nobody wants to learn and the OU-fans want everybody to unlearn simple facts.


It is only personal insults now (and I am also doing the insults, why not, I have a temper, eat it, go to hell).

Greetings, Conrad

dieter

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Re: TD replications
« Reply #94 on: February 10, 2017, 10:05:25 PM »
Conrad, I take it you agree with me?
Your understanding of "Work" is that of Ron in the IT Crowd, but that is not what physics means by the term. You were wrong and seemingly unable to face it. To understand that must hurt, but it may turn you into a cooperative kind of forum user.


Same thing hapens to me too, sometimes, btw. Nobody is perfect and that ain't a shame.


This is already getting off topic again, sorry. Well the "what is work anyway" thing has some relation.

conradelektro

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Re: TD replications
« Reply #95 on: February 10, 2017, 10:25:12 PM »
Conrad, I take it you agree with me?
Your understanding of "Work" is that of Ron in the IT Crowd, but that is not what physics means by the term. You were wrong and seemingly unable to face it. To understand that must hurt, but it may turn you into a cooperative kind of forum user.

Same thing hapens to me too, sometimes, btw. Nobody is perfect and that ain't a shame.

This is already getting off topic again, sorry. Well the "what is work anyway" thing has some relation.

Dieter,

please read my posts. Yes, I made an error with WORK yesterday evening. But since then I know:

WORK = FORCE * DISTANCE (and that is the right formula as you know and as I know now, so please do not get stuck on this, you are a sneaky person holding a corrected error against me).

I learned what WORK is, but you do not want to learn what POWER (or energy) is.

In order to calculate POWER you need TIME. And you seem to be too thick to get that.

But as I said, I do not want to loose any more time with you. Please stop writing about me, you deliberately tell lies about what I write. You deliberately deny that I corrected an error. I do not like this and it upsets me. You are not a person whom one should converse with.

Greetings, Conrad

telecom

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Re: TD replications
« Reply #96 on: February 10, 2017, 11:15:37 PM »

Yes, it's looking that way now :P


I was thinking of building a Neo magnet version next before trying a self loop these weak ceramic magnets.
If there is a gain then it may have more potential of working then a ceramic version.


Luc
Looking forward for the video - this is the most remarkable design I've seen in years!

dieter

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Re: TD replications
« Reply #97 on: February 11, 2017, 06:46:24 AM »


Conrad, I feel no harm for you and wish you all the luck that makes you happy. kr


And Pulleys, Strings, oneway clutches sounds good. Maybe you could even use a simple hook that grabs a spoke, using leverage to sync with the 11mm vs wheel circumference / 12.

deslomeslager

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Re: TD replications
« Reply #98 on: February 11, 2017, 11:13:22 AM »
Having seen and understanding that a sideways push generates a better force (for the lack of no OU words), some thoughts come to mind.
1 - We can construct this in a rotating fashion. Luc already uses a wheel on top, now all we need is a wheel on the bottom, and the wheels need to have some timing mechanism. The top wheel will let the bottom wheel rotate, and if all goes well, with a surplus. If the bottom wheel is an e-bike wheel, it can generate power (any other power generating tool will work as well)
2 - for other people on this forum who have build a pulse motor and have it laying around: You need to mount your magnets rotated 90 degrees, similar to how Luc uses the magnets. Is there someone willing to build this? Should not be to hard to build, as long as your timing is right. Maybe it works that way as well.

Grumage

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Re: TD replications
« Reply #99 on: February 11, 2017, 04:13:54 PM »
A " face cam " and pivoted arm would be the simplest approach!  ;)

Cheers Graham.

dieter

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Re: TD replications
« Reply #100 on: February 15, 2017, 08:28:44 AM »
Any news on this one?


Yesterday I found an antique sewing machine on a yard, "Singer 1", no electrics, beautiful btw., with a foot pedal driving a flywheel, which would be perfect for something like this.

gotoluc

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Re: TD replications
« Reply #101 on: February 15, 2017, 05:05:17 PM »

Even though the design appears to have a gain it's a very small one because of the magnet size.
I think we should consider this first design as a concept verification.
I also think OU devices need to be large at first so not to overlook things.
With this said I'm thinking the output needs to travel more distance and have much more pull or push force.
To do this it's going to need magnets that have more surface area.

I've ordered 12 of these for the next experiment: http://www.ebay.com/itm/322408983857

So the version 2 test device will use these 2" x 6" magnets. They be turned by a low rpm DC motor in order to calculate input Watts.
There should be a formula to convert the back and forth output into Watts.
If you want to help please find the formula to do so.

Regards

Luc

dieter

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Re: TD replications
« Reply #102 on: February 15, 2017, 06:28:42 PM »
I think, first you should add springs to the 11mm push/pull to compensate / nullify the losses you will otherwise get due to accelleration of mass. Springs of the right strength, so it becomes a pendulum, synched with the wheels rotation.


Mass in motion doesn't require energy, only to brake, accellerate or redirect it will require energy, in outer space without gravity and air, of course.
So, this goes over my head and personally I would rather try to build that cranking mechanism than to find and understand a formula for the conversion of this output into eg. joules. And I wouldn't trust the formula anyway, esp. when found on wikipedia :)


About size I found out, you may also just downscale friction, instead of upscaling the model. Bicycle wheels have pretty good friction and stability features already, in relation to their size.


For tiny models with eg. 1 foot diam. rotor I prefer Needle bearings, actually hardened steel nails, so the contact area is never nore than like 1/50mm2.


Anyhow, with stronger magnets you may very well see an even more obvious net gain.

gotoluc

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Re: TD replications
« Reply #103 on: February 15, 2017, 08:36:00 PM »
Humm, pendulum... I was also thinking of a pendulum instead of the wheel since only 2 magnets are needed to make the output go back and forth.

It should also be an easier mechanism to redirect the output back to a pendulum.

Luc

Floor

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Re: TD replications
« Reply #104 on: February 16, 2017, 04:46:39 PM »
@gotoluc

The difficulty with a pendulum is the same magnet orientation
passes over again on each  back swing.
....................................
When using big ceramic magnets, you might still be able to use
a bicycle rim if you support it with 4 rolling bearings / wheels 
2 on each side, near to where it passes over the stationary magnet.
.......................................
If you have any thing specific you would like to run by  me
fell free to pm me.
........................................
Your latest device kicks a___!

                regards
                   floor