The summary of my latest studies

[path_finder]

Curiously, the new path needed for the chain can be found also in the 'Iarga working model'.
Herafter an excerpt of the book.

edited:
For those interested by the replication attempt of the Iarga working model:
http://www.youtube.com/watch?v=c8sGqXqC4cY
http://www.youtube.com/watch?v=trnU9k7czMY
http://www.youtube.com/watch?v=V_NfiKfhL1s
http://www.youtube.com/watch?v=AfKpWxqwpZs
http://www.youtube.com/watch?v=9V9jt1YIumM

[murilo]

Cher p_f,
tu as gentil Chevallier, merci merci par ton 'comprehension'.

Anyway, if one want an omelet, eggs must be crack.

Best!
M
PS: BTW, the 'static' friction, or 'physic touch' in avalanchedrive is benefice and a goal, since 'g' is also used to assemble. The active friction factors are suspended and OUT of the main accumulated power.

[path_finder]

I made the modification, in accordance with the IARGA design (see above). Hereafter, a shot of the result (before the installation of the counterweight at the opposite position of the inverting roller).

[path_finder]

The previous design was wrong again, the use of a 20 teeth gear being NOT a good idea.
With 20 teeth we recover TWO counterclocwise turns, instead ONE with a 10 teeth gear (we counteract in this case only ONE turn: the famous 'coin dead turn').
Hereafter is the good one, acting like hoped: the three disks are immobile during the rotation of the wheel.
Many thanks to the IARGA planet inhabitants. I'm really serious. I feel really strange this encounter at this precise time: A small help of the fate?
I can now start the installation of the three pendulas.

[path_finder]

Next step of my experiment: with the three pendula.
The final stand has not been built yet, and I use two chairs for the first verifications.
As shown in the two shots hereafter, the grounded bar (linked to the central reference gear) is put on the back top of the first chair, the tube inserted in the axis of the wheel (opposite side) being on the back top of the second chair.
This is perhaps not the best improved way, but sufficient for the first tests.
You can see the three pendula, suspended at the rim of each disk, also the locker pin on the same diameter but opposite position.
All pendula are located at the same side of these lockers (on the shot on the right side, for a clockwise rotation)

First conclusions:
1. the wheel is always balanced, whatever the position of the wheel
2. When rotating slowly, the equilibrium is still saved.
3. when rotating more quickly by hand, after an half turn a strong torque pulls the wheel.
The problem now is coming from this torque wich desynchronizes the disk versus the reference position.
My design is not strong enough, in particular the disks have been linked to the corresponding gear, just with a screw and a nut.
The solution may be to insert a key on each shaft.
Another problem is coming from my chain (to much leak) which misses some teeth when the rotation speed increases.
I cannot obtain more than two turns before the desynchronization of all disks, and therefore this torque disappears.
Nevertheless, observing this excellent result, I decide to build the same wheel, but this time, with three wheels of bike (including the ratchet), linked with a strong metallic chain for bikes.
I must do that very soon, before my departure scheduled for the next week.
I'm sure now to be very close from one of the four possible solutions.

[path_finder]

If you observe with attention the drawing here: http://www.besslerwheel.com/forum/files ... eory11.png
and the two shots here:
http://www.besslerwheel.com/forum/files ... ripod6.jpg
http://www.besslerwheel.com/forum/files ... ripod7.jpg
you can conclude these important points:

Being balanced the wheel can NOT be powered by the gravity.
When put in rotation with a sufficient speed, the centrifugal force can be used for create an unbalance state.
This extra phenomenon is catched by the gravity field for create a torque.
In that case, can we say: Is it a gravity wheel?

Second important point: if this above depicted principle works, the common laws of the physics remain still valid.
The consequence is important: this kind of device can not be anymore denied by the scientists.

Third important point: this wheel is not an overunity device, because there is a physical limit of the rotation speed coming from the radial nature of the centrifugal force and the value of the resulting component of the both forces (CF and weight).
It's just a device with a dynamic ratio between the accumulated energy of the flywheel and the kinetic energy gained by the centrifugal force.

Fourth point: on a certain point of view, this wheel is related with another principle I have suggested earlier: the control of the chaos.
Remember here: http://www.besslerwheel.com/forum/viewt ... 2674#82674

Let mix everything, and you find for sure the solution.
Willing to rebuild my wheel with some bike parts (wheel, chain, ratchet), I had the opportunity to visit a pertinent member of my family (the new member 'danplume').
He is an expert in the mechanics (official technical assistance of the 'Paris-Dakar' rally) and his experience in the gears/ratchet/chains etc. is encyclopedical.
After two days of discussion we found together a very clever way to solve the mechanical problems I was faced with my plastic made wheel above.
The result, unbelievable simple but efficient will be published very soon.
This is the reason why for the first time a member, having published nothing yet, will receive from me a green dot for his major contribution.

[nicbordeaux]

Good grief PF, have you solved the PM problem or something ?

[murilo]

path_finder said:
Let mix everything, and you find for sure the solution.
Willing to rebuild my wheel with some bike parts (wheel, chain, ratchet), I had the opportunity to visit a pertinent member of my family (the new member 'danplume').
He is an expert in the mechanics (official technical assistance of the 'Paris-Dakar' rally) and his experience in the gears/ratchet/chains etc. is encyclopedical.
After two days of discussion we found together a very clever way to solve the mechanical problems I was faced with my plastic made wheel above.
The result, unbelievable simple but efficient will be published very soon.
This is the reason why for the first time a member, having published nothing yet, will receive from me a green dot for his major contribution.




Bien venue cousin 'danplume'!
The technical nursering for path_finder ideas and projects will need a complete gang of cousins, but if you get spare time, please advise me!
I have a not current puzzle to you! 8)
Best!
Murilo

[path_finder]

thanks murilo.

Most of the needed parts are given in MT51.
Excerpt from Wikipedia 'ratchet-head wrench':

The ratcheting socket wrench, with interchangeable sockets, was invented by an American, J.J. Richardson, of Woodstock, Vermont, USA. The tool was patented through the Scientific American Patent Agency on June 18, 1863.[1] The first illustration of the tool appears on pg. 248 of the April 16, 1864 issue of Scientific American.

The socket wrench with a ratchet is typically published by Bessler in the MT51 drawing, a combination of ratchet pendulum with its bob.
The picture hereafter is what 'danplume' suggested to me.
Advice for the last minute inventors: please don't loose your money for nothing. Obviously the above patent is now in the public domain.
Many thanks to W.G.McMurtry for the original drawing, which can be found in his Web site here:http://www.orffyre.com/mt41-60.html

[path_finder]

Some complements for a better understanding:

- the wheel needs a flywheel for the energy exchange with the kinetic energy. Note the flywheel is also here on the MT51.
This can explain the big amount of weights stored in the container during the transportation (these cylinders being all around the rim of the wheel)

- If you build an important flywheel the eccentricity of the pendulum will be very close from the vertical for the first degrees after the start (when the rotation speed is low).
Therefore if you don't help at the start time, you will be obliged to give an important push (counteracting the high level of inertia).
Nevertheless there is an easy mean to assist the wheel at the starting time: a heavy weight suspended on the central axis with a rope
You just need a simple clutch (linked perhaps to a Watt governor) which let free the rope when the weight reaches the rim of the wheel (but without contact).
By the way this weight acts like in a vertical wall clock, just for accelerate the wheel during the first turn.

- For sure the contrary must work also when you want to stop the wheel: the clutch (with the Watt governor) is active again when the rotation speed decreases and the rope enrolls around the central axis, ready for the next start.

- This can explain why on the first wheels Bessler hold the wheel with an external rope during the standby periods.

Another green dot to 'danplume' for this pertinent suggestion.

edited:
Another suggestion:
Instead to use an heavy weight like in the way explained above, another clever solution is a set of torsion bars which gives the same result.
This assembly is acting like a giant spiral spring, and allows the storage of energy during the stop process, and the restitution of this energy during the start period, helping the wheel to reach the minimum necessary rotation speed for the centrifugal force to do the job.

[eccentrically1]

Pathfinder, I think you can only give a rating once. But it's the thought that counts.

http://www.besslerwheel.com/forum/faq.php#44

[path_finder]

dear eccentrically1,
It is worst than you say: you must have posted at the minimum ONCE before to be credited.
This poor 'danplume' do not control enough the Shakespeare's language for posting and by the way cannot receive his prizes.
I suggested to him a small effort: a post with just 'Hello world!'...

[nicbordeaux]

If Danplume writes in French and just pops the text into an online translator it'll come out as mainly gibberish. Which will be par for the course, nobody will notice ;-)

ps : Don't worry PF, nobody want's to patent a socket wrench. Still, it's a really good idea to recycle one as a ratchet. Maybe a bit more friction/drag than a bike sprocket ?

[eccentrically1]

Oh well, sorry. It's too bad translation isn't two-way on the web yet.
I've read that Facebook is testing a "translate" button. It makes a lot of sense.
Maybe Scott is working on it...

[daxwc]

Bings language translator is pretty easy to copy and paste into, he shouldn't have much trouble. I am sure there is a french version also. You can put the internet address in and it will translate the forum.


http://www.microsofttranslator.com/