Pedalling gravity...

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iacob alex
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Pedalling gravity...

Post by iacob alex »

...as a possible self-running process , at :
www.geocities.ws/iacob_alex/Some_Drafts/text032.jpg
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re: Pedalling gravity...

Post by johannesbender »

interesting concept but they seem in equilibrium , wich could perhaps be adapted to form a rectractable/extendable arm
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Rafael Ti
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re: Pedalling gravity...

Post by Rafael Ti »

Nice idea Iacob! I would go for a circular ramp to get even more power ;) What do you think?
Perhaps this is the idea our Brazilian friends base on in their famous BIG generator.

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Post by iacob alex »

Hi Rafael !
If RAR has a successful starting point idea/design and usually the whole is simpler than the sum of ITS parts , can we minimize it as a "pedalling gravity", not as a simple,brief outline but as an easy test , experiment ...also!?
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Post by path_finder »

Dear alex,
Remember the links in this old topic: http://www.besslerwheel.com/forum/viewt ... 267#113267
I cannot imagine why nobody though on this before, including myself? It is so simple!...
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re: Pedalling gravity...

Post by iacob alex »

Dear P_F !
Really , it's the same basic idea.
We have here a single problem : if it is "workable".
Sorry , but sometimes the appearences are deceptive...
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Rafael Ti
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re: Pedalling gravity...

Post by Rafael Ti »

Yesss, Iacob, if it's workable ;)
In here the constant load must be present.
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re: Pedalling gravity...

Post by AB Hammer »

iacob alex

Here is the real build while in process several years ago. The Green arms where welded equal to each other but the arms where mounted high and low. The pictures where the final fitting before welding parts in place. The overall outcome was a cool fast spinning do nothing for you had to spin it. LOL

Here are the photos
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re: Pedalling gravity...

Post by iacob alex »

Hi AB Hammer !
I agree with your experiment.
In my opinion , for this design the main problems are : sensitiveness of torque unbalance and the threshold of friction.
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Post by AB Hammer »

Al_ex

It also shows that many of us will come up with the same ideas as well. Just with slightly different tricks.


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re: Pedalling gravity...

Post by iacob alex »

...at : www.geocities.ws/iacob_alex/Some_Drafts/text033.jpg
...but with an "appropriate" motion (blue arrow).
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Post by Rafael Ti »

Hi guys, Hi Iacob.
The last posts you have made remind me your drawings of 'pedaling gravity'. I see a potential in it.
The one below is corrected drawing which I posted some time ago. Of course flywheel is a must be here :)
It works as energy condenser taking it at some point and then giving back when it's needed. (oops, arrows...)
Exactly like capacitors in electronics..
All the best
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Post by iacob alex »

.....has a simple starting idea , if you take a look at :
http://cdn2.coresites.mpora.com/rcuk/wp ... iagram.jpg

The problem is : can a pedaling gravity manner sustain a continuous motion?!

All we need is to apply a simple concept (variable/oscillatory leverage ) , so to have a permanent unbalance (torque difference ) , on the same side of the pedal bar.

An attempt with a Class 2 variable / oscillatory leverage , at :
Https://m.youtube.com/watch?v=5I4NDGcj1UA

If the "impossible PM" is of three kinds...why not ?!...to imagine and test a "possible " variable/oscillatory leverage of three kinds , also ?!

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Rafael Ti
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re: Pedalling gravity...

Post by Rafael Ti »

I see the main problem in these kind of devices is the 'scissor effect', which kills the wheels at certain points/periods.
There are many combination with shape of beam /can be fo.ex. semi-circle/ and place of fulcrum to improve system.

BTW.. Nice and instructive build by AB Hammer, thanks for posting. I guess I know what AB H. was going to do in the end of the story :)
I am pretty sure that RAR Energia generator bases on principle of "Pedaling Gravity".
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re: Pedalling gravity...

Post by iacob alex »

Hi Ti !
Scissors are levers ( a pair of Class 1 levers , with a common fulcrum ) , which are considered a simple machine.
How do you put into work a lever , it's a particular case.
Anyway , the basic mechanics has as a starting concept regarding the ( simple ) machines ...the lever ( leverage ).
A tool is but the extension of man's hand ...
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