The summary of my latest studies

[path_finder]

This is the reason why I'm still in the quest for a simple speed doubler to be included inside each module (without any crank)

Returned back home, I deliver the principle extracted from the above animation:

A is the main wheel, with a drum centered on its axis. The A rotation speed is X (it's the same for the main drum).
B is another drum, rolling inside the main drum. The size of B has been selected at 2/3 of the size of the main drum. The rotation speed of B is 1.5 X (equal to 3/2 X).
C is a ring rolling outside of the drum (on its external rim). The size of the C ring has been selected at the 4/3 of the size of the main drum. Therefore the rotation speed of the C ring is 0.75 X (3/4 X).

Most important now: the B drum rotates two times kicker than the C ring.
According to the raj Balkee's design, the weights long arms will be linked to the C ring, and the short arms will be linked to the B drum.
The power is recuperated on the A axle. This power can be liased with a lot of weights around its rim for creating an inertial flywheel.

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After few months of inactivity I recover the way to finalize my latest building.
This model is the first attempt for using the monolithic speed doubler, like depicted above.
The first step is shown in the video below.
The main wheel is the octagonal double flanged frame.
Inside at the middle distance between the center and the outer rim of the frame are the 30 teeth of the pseudo gear crown.
The small disk has 20 teeth and rotate inside the two flanges at the speed of 1.5 times the speed of the octagonal wheel. An additional part is not installed yet: the two arms fixed to this disk and supporting the pivot of the raj's design small arms.
Tomorrow the next step: the ring with 40 teeth supporting the pivot of the raj's design long arms.

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The next step involves the 40 teeth ring, in suspension on the 30 teeth crown.
Hereafter two shots showing the parts, and an animation showing the final assembly.

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Another drawing with more details showing the sandwich structure of the monolithical speed doubler and the linkage pivots (in red).

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One side of the autonomous speed-doubler is now completed.

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Next step, where one side is now completed.
I have to do the same on the other side (a meticulous job). Be patient.
The second shot shows in the background the stand where the wheel will be included.

[path_finder]

Nobody is perfect...
I have just discovered the latest built doubler was wrong: the speed ratio is not x2.
This is coming from a wrong calculation for the number of teeth in the two C rings: 40 is a false value.
The correct calculation is:
If the main wheel rotates at 30 rpm, the small drum will rotates at 45 (due to the 2/3 ratio). That is correct.
For getting a speed doubler the C ring must rotate at 22.5, what requires a ratio of 30/22.5 = 3/2 (1,5 and not 1.33 like used today).
The number of teeth must be 45 (and not 40).
The wrong value today desynchronizes the doubler very soon.
I am in way to modify the two C rings (hoping to recycle the previous ones).
I apologize for the delay.

[path_finder]

Look at this old post: http://www.besslerwheel.com/forum/viewt ... 4378#94378
The second animation could be in relation with the MT138 drawing (alternative motion of the connected rod) and could explain the '55' code.

In this old post, click on the second link (http://userpages.monmouth.com/~chenrich ... lling.html) and go to the Java applet.
Then click on the black dot and move the red dot, presuming this:
- the outer circle is the C ring
- the medium circle is the A main wheel centered drum
- the small circle is the B rolling drum
This MT137 drawing is obtained with the following ratios:
- 12/10 for the outer C ring (4/3 in my design)
- 1/2 for the rolling drum (2/3 in my design)
Did Bessler used these values for a similar design? If yes, why?

[path_finder]

I had to solve an important mechanical point:
The two C rings are only hung at the pins crown on their inner rim, and are not maintained in the vertical plane.
At the bottom they are inserted between two plastic surfaces, but NOT at the top.
So far we need to supply a flange for the pins crown. Some washers can do the job, but no nut can be used for clearance reasons. This is why a decide to use a couple of 'pop' rivets, like shown in the first shot. The second shot shows the used parts.

On the third shot you can see the main wheel with the both sides completed (without the weights), and on the fourth shot the full assembly with the main wheel installed in its stand.

I have to make some tests for the verification of the parts motion and synchronization, before to include the two raj's primemovers.

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After few months of inactivity (serious health problems and a lot of big tasks for my job) I am back for the follow up of my previous experiments.

The purpose of the first motion test was to verify the good behavior of the three disks.
My last building was not moving correctly and I had to find why.
Finally I found why they were locked after less than an half turn:
-1- the shape of the teeth was wrong, the pins being stopped by the tooth during the way-off.
As you can see on the first image below, with the old and the new shape (now triangular, in red)
-2- the clearance between the four planes of the main frame was to much wide.
This has been carefully adjusted. The long screws assume now a stable clearance, being now fixed on the both planes through two filtered holes (see the shot below).

The conclusion is obvious: a perfect building is always a mandatory, in particular within the small details.

Now the motion of the three disks is correct. The small video shows this motion.
For a better view the elbow points of the small central disk have been enhanced with a blue paper, and the four fixed pins of the two big disks have been enhanced with a yellow paper target.
As you can see, once the main wheel put manually in motion, the yellow targets rotate at 3/4 of the main speed; instead the blue targets rotate 1,5 times quicker than the main frame, so far two time quicker than the yellow ones (with some random shifts due to the fact this speed doubler don't include the two twin mechanisms neither the four weights).

The next motion test will include the Raj Balkee mechanism.
Please cross your fingers.


edited: for closing the first small noisly and disturbing video, right click on the image and select 'quit' in the flash menu.

[rasselasss]

Terrific build PathFinder and i'm pleased your health is improving....Good Luck.

[Andyb]

Nice bit of evolution with the screws, two in one or more is always lovely in my world of trying to solve problems,thanks for sharing.

[justsomeone]

Hi path-finder. Prayers sent for a complete recovery from your health problems.

[raj]

My dear Path_Finder,
What an artful engineered built.
This, in itself, shows your determination to find the ultimate result of your convictions.

I, too, in a very modest way, am building a concept testing device. But it won't be anywhere as sophisticated as yours, when you see it posted in a few days.

The best of Luck to you.

Raj

[path_finder]

Many thanks to rasselass, Andyb, justsomeone and raj for the kind encouragement.
I'am just leaving for one month in Comoros for my job, and therefore not able for the moment to finalize my tests. Be patient; after more 300 years of ignorance, one month is marginal.