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Author Topic: New accelerating gravity wheel ! Converted video from www.newenergymachine.com !  (Read 581523 times)

Offline 4Tesla

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@noonespecial

Thanks.. I'll take a look!

@LarryC

Wow.. looking good!

Jason

Offline noonespecial

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Hi Larry,
I think I'll whip up your design in Phun and see what happens. How much weight were you using again? And how are you activating the levers?
Thanks,
Charlie

Offline LarryC

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I think I'll whip up your design in Phun and see what happens. How much weight were you using again? And how are you activating the levers?

Hi Charlie,
 
The weights are 7 lbs in each box, appreciate your proposed Phun efforts, but I don't think you can simulate without considering the stored centrifugal force in the bungee's. I don't know what this stored force will be until I can test and I'm sure it will vary with the rpm's.

The levers will be activated by a fixed stop at 4:00, which will hit the center pivot of the lever and the pivot will slide along the stop until the two weight boxes reach 1" pass the mid point and then drop off. The main timing problem will be releasing the stored centrifugal force at exactly the right time to support the starting movement of the levers.

Hopefully, this is close to what Bob was doing, but since he remains silent, who knows?

Regards, Larry

« Last Edit: August 16, 2008, 06:05:28 AM by LarryC »

Offline noonespecial

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Hi Larry,
How is the testing coming? Just curious....
Charlie

Offline LarryC

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Hi Larry,
How is the testing coming? Just curious....
Charlie

Yea, me too, but ran into a problem with the previous setup. The lever although great at initial pull, caused the slides to jam with two much sideways force above 20 degrees. So had to set up a new lever system that pulls almost straight up, works well with a manual test of full weights. Had other minor changes, but now all I have to do is add the stops to the base again and tweaking will commence. I will be sending pictures this evening and be able to give you some better stats for Phun. Maybe you can help improve the design, but my main concern is what piece will break first ;D

Regards, Larry

Offline LarryC

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Maybe you can help improve the design, but my main concern is what piece will break first ;D


Drum roll please! It was the 100 lb rated desk slide that broke first. See the warped slide pic. I really though the 6" lazy susan hardware which is the central rotation mechanism would go first.


All test were done with bungees latched using about 21 lbs of force and started by lightly pushing the rotor arm counterclockwise at 12.00. The machine has safety stops to stop the centrifugal forces from destroying itself.

First series of test with 5 lbs at each end. With tweaking one of the test finally made it around but did not re-latch as needed to continue.

Went to 8 lbs at each end and warped one of the desk slides. Apparently the Centripetal force was greater then 100 lbs. The stored centrifugal force and the centripetal force is required to push the weights to halfway + 1". So I will have to rethink this design as the desk slides cannot handle the centripetal force.

Another comment, this is a noisy machine.

Sorry about my junk storage behind the Machine pic but that was the only piling where I could safely hang this think on.

@Charlie,
The center levers are 35.5 " with 10.5 before the pivot and 25 after. The piece from the box to the center lever is 20". The total movement of the boxes are 23.5".

   
Regards, Larry

Offline helmut

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Hello Larry
Good Job
which you much to succseed
Hello Bob nice to have you here . This thread seems to be revitalised.

thanks for sharing.

helmut

Offline noonespecial

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Hello Larry
Good Job
which you much to succseed
Hello Bob nice to have you here . This thread seems to be revitalised.

thanks for sharing.

helmut
Bob? I wish Bob were here.....:)

@Larry
I've started to draw up your design but will need to change the latch mechanism. Unfortunately there's no 'Z' dimension in these simulation programs so doing a right angle latch mechanism won't work. I'll attempt the original gate latch and see if I can make that work. Stay tuned.....
Charlie

Offline broli

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If it's fixed could you please make a video if you can?

Offline LarryC

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If it's fixed could you please make a video if you can?

Sorry, the machine is apart at this time I and could not fix the broken slide, lost some ball bearings. But, If Charlie gets his Phun version working you should be able to step it thru its action.


Did pick up some new parts, patio door rollers and 1/2" angle. The new version will look more like Bob Kostoff's (without the shocks) and will be much stronger than my previous version. Still believe something else will break, but will just keep modifying.

Regards, Larry

Offline noonespecial

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Before I work on the latch part of this I just want to make sure that this is what you had so far. I had to add a couple of stops for the lifting arms because they keep getting inverted for some reason. Anyway, take a look and let me know what you think.
Remember you need Phun loaded and extract this file to the 'scenes' subfolder. Once in Phun, under the file dropdown menu select load scene (Bob). Make sure that the 'hand' tool is selected and click on the green 'run' arrow. If something screws up, click on 'undo'. Grab anywhere and gently rotate. If you have a problem let me know.
Charlie

Offline LarryC

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Before I work on the latch part of this I just want to make sure that this is what you had so far. I had to add a couple of stops for the lifting arms because they keep getting inverted for some reason. Anyway, take a look and let me know what you think.
Remember you need Phun loaded and extract this file to the 'scenes' subfolder. Once in Phun, under the file dropdown menu select load scene (Bob). Make sure that the 'hand' tool is selected and click on the green 'run' arrow. If something screws up, click on 'undo'. Grab anywhere and gently rotate. If you have a problem let me know.
Charlie

Seems the light pink is short, didn't specify before, but should be 22.5 from pivot center to pivot center. With the weights at the bottom the right green lever should be at 30 degrees to the light pink, Phun has it over 45.

Regards, Larry

Offline LarryC

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Help please, can any of you Spock geniuses explain this from reply #83:

Quote
The way to lift the weight to the opposit end is at the 4:00 oclock position an  arm from the centre, on a cam mecanisum to the end of the arm (2.5 ft) is forced around and lifts the linked weights 1" farther than 1/2 the total travel. Centricical force will lift it the rest of the way. It acts like a leaver 2.5" to centre and 10" past.The farther it pushes the weight from the bottom the easier it gets.The first 2" is the heaviest. The spring mecanisum helps at the first of the upward stroke.

Don't worry about the  4:00 O'Clock position or the 1" farther than 1/2 the total travel or the first 2" is the heaviest or the spring mechanism. Can you please give your insight on the cam acting like a lever 2.5" to center and 10" past!  Also, the stated Centricical force is centrifugal force.

Regards, Larry

Offline noonespecial

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And how does this play into it as well?

"The unit works by raising the weight up to the top at the 12:00 o clock position and the lower weight follows as they are connected. A cam mechanism picks up the weight in the center of the wheel and raises them up approximately 4". After the cam, the actuator arm brings it the rest of the way. (8").  Remember the weights are joined so they have only 1/2 the distance of the total travel before there is no resistance. (12" on a 24" stroke)."

This statement sounds like there is a simple cam that lifts everything the initial 4"...the hardest part. Then there's 8" of lift from the actuator arm, done with the "It (cam or arm?) acts like a leaver 2.5" to centre and 10" past." We just need to figure this part out.

Charlie

Offline AB Hammer

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@LarryC

 I looked at what you have done. The arm impact to make the shift will cause you a severe shake/jar and tear it apart even if you get it running, it won't run long. I have already played with this concept last year with counter weights and I understand the jarring that you are going to be effected with plus the CF problem. If you have any questions pleas ask in an email due to over exposure. ab.hammer@yahoo.com