#### GoGravity17

##### GRAM gravity assisted pulse motor project
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https://youtu.be/jKIWcJiJs04

https://youtu.be/IOdulvy8M7A

https://youtu.be/wBnVWRb1fIA

https://youtu.be/B3dLzZZ5jKQ

Greeting, I am attempting to combined a pulse motor to drive a unbalance wheel that will drive a PMA. If I can get about 300 watts of mechanical power at the output drive shaft then I should be able to generate about 10 amps at 12 volt from the PMA using a Buck converter.

I just started to modify the pulse motor to a rotary gap configuration. I will post results when available.

#### Cycle

##### Re: GRAM gravity assisted pulse motor project
« Reply #1,  »Last edited by Cycle
Let's see if I can reverse-engineer your idea. It entails small magnets in a sliding configuration within heads mounted to the ends of arms on an unbalanced wheel. At one side of the machine, a pulse magnet would push those sliding magnets inward, where they would be stuck to a small piece of metal and thus not move against the centrifugal force attempting to fling them outward, and at the other side of the machine, a permanent magnet would pull those sliding magnets outward, where they would be held by centrifugal force.

The physical difference in distance from the center of the wheel of those sliding magnets on each side of the wheel would mean a weight imbalance, causing the wheel to turn, creating a "relay" effect whereby a small input triggers a larger output.

Is that the general idea? If so, here's a few ideas...

1) Put your pulse magnet and permanent magnet at the top and bottom of the wheel to maximize the force imbalance.

2) A joule thief / energy recovery circuit (operating at the resonant frequency equivalent to the wheel RPM times the number of arms), in order to recover that collapsing magnetic field of the pulse magnet and reuse it.

3) Use that centrifugal force! It's attempting to fling the magnets in the arm assemblies outward, so switch your pulse magnet to a "pull" configuration. It'll take less energy to pull them outward with centrifugal force helping than it would to push them inward against that centrifugal force. Let the PM do the work of pushing them back inward.

4) MuMetal shielding around the PM on its approaching side. This will constrict the magnetic field to a narrow band which has an effect only after the arm assembly has approached, lessening the "push-away" effect between the PM and the approaching magnets in the arm assemblies.

5) A conical pulse coil to concentrate magnetic flux.

6) Flux "switching"... check out:
https://www.kjmagnetics.com/blog.asp?p=magswitch

http://www.cheniere.org/misc/astroboots.htm

If you can rig up a permanent magnet which does most of the 'push/pull' work, and a much smaller coil which merely switches the magnetic flux between two routes (one route is the PM doing work against your wheel, the other route is a magnetic flux 'short circuit'), you could use a much smaller pulse magnet and get a much larger amount of work done on the wheel.

#### GoGravity17

##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/SMHmLgXWR1U?list=PLsLw3TEPlzqhcwynsFENcdV1QnQreXnqZ

Hi, thanks for the help. It is nice to have options. II did some basic tests and found the above approach may work best for this project. Once fabricated more magnets can be added.

I found a problem with the main rotor, I am making modifications

https://youtu.be/ZG_xam6bHdQ

Thanks again for the help.

##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/Zuk9YXycUYQ

The main rotor still requires some more modifications but showing signs of improvement.
##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/SUDzFv_hURA

Making progress. 1 to 9 gear train with PMA mounted.

#### Matt Watts

##### Re: GRAM gravity assisted pulse motor project
A few may already know about these, but for those who don't, here's a nice selection of stators to couple with the permanent magnet rotor:

http://www.windbluepower.com/category_s/27.htm

They are all standard 3-phase outputs.  Supposedly this design is low cogging which will help quite a bit when starting the device.

Project is coming along nicely.  Looking forward to your video when this design appears to accelerate on its own.  Keep a switchable load handy nearby that generator, because it may be the only way you can slow that gizmo down.  :-)
##### Re: GRAM gravity assisted pulse motor project
You may have seen hundreds of these types of devices, but they are interesting to muse over and contemplate:

Who knows, maybe an idea will spring forth...

#### GoGravity17

##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/HSOTGpZVSLk

hi, thanks for the info. maxblue still requires a high rpm.
this is  the second multi stator PMA I made but it requires a custom buck converter with a high voc.

https://youtu.be/4u_QWesfYdA

#### Apoc4lypse

##### Re: GRAM gravity assisted pulse motor project
One thing I've always wondered is it possible to use gravity to temporarily "store" energy that can then be stepped up using a gear system to help move a gravity based system along.

#### GoGravity17

##### Re: GRAM gravity assisted pulse motor project
Hi, I do not know. I am thinking if I can get 300 watts of mechanical power at the output shaft then I can generate 10 amps at 12 volts of electricity. The gear train steals a lot of power as the RPM is increased. The other problem is having a PMA that will produce a lot power at a low RPM. It is looking like I will have to fabricate a PMA with multiple stators and rotors. I should know more in a few days.

. https://youtu.be/gdnsGDhNH4w

early testing of multi stator and rotor PMA.

I can just add more stators and rotors until I get the desired electrical output. It will take some time to fabricate and mag-wire is ordered:)
##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/CEyiflP9U74

another option, the weights shift on the rotor. Start watching at about 2:05.
##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/UlGjr2VBxR0

linear pulse motor fabricated
##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/-Vi4w97YiqE

proceeding to fabricate large pendulum drive and I will use the MPMM to drive the the pendulum

#### Apoc4lypse

##### Re: GRAM gravity assisted pulse motor project
I love the idea of using the ocean to generate power with the pendulum, I think the ocean could be tapped for so much energy.

#### GoGravity17

##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/eLq94TdoqxE

Hi, I may have found a better way to drive the project.

#### Matt Watts

##### Re: GRAM gravity assisted pulse motor project
Not sure what I'm seeing here, but the old guys seems convinced he has something.

#### GoGravity17

##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/A0mCfgsbECo

hi, just quick update
##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/IU8ehKZHRMA
Quote from Matt Watts on July 6th, 2017, 11:54 AM
Not sure what I'm seeing here, but the old guys seems convinced he has something.
I will it to push the main rotor.
##### Re: GRAM gravity assisted pulse motor project

https://youtu.be/U_q28sfn-NM

hoping other builders will give it a try