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Author Topic: Gravity assisted power project- GRAM  (Read 81791 times)

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #120 on: May 17, 2017, 03:00:04 AM »

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #121 on: May 21, 2017, 08:29:25 PM »
https://youtu.be/THHGEgtjDFs

abandoned TSO for a pulse motor to drive the Swing5, will use stepdown gear train for increased torque
« Last Edit: May 22, 2017, 02:11:30 AM by burnit0017 »

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #122 on: May 22, 2017, 02:13:37 AM »
https://youtu.be/8OISfRpDZSE

requires a better design of the electromagnet, suggestion welcome

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #123 on: May 22, 2017, 07:20:37 PM »
https://youtu.be/G_jt9YJnG5M

Reduced e-mag core end has improved RPM

antijon

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Re: Gravity assisted power project- GRAM
« Reply #124 on: May 22, 2017, 11:48:55 PM »
Hey burnit, just curious but do you have a way to adjust the timing of the pulse? Looks like if you're in attraction mode you could pulse a little before the magnets are lined up, and maybe have better rpm. Reminds me of when I took the flywheel off a mower engine then tried to start it. The timing was so close the piston bucked back instead of crossing TDC, nearly pulling my arm off before the starter rope popped.

Anyway, timing is important in any machine.  ;D

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #125 on: May 23, 2017, 12:26:48 AM »
Hi, I am using the e-mag in repulsion. I can rotate the trigger cam to adjust the timing. I have to fabricate away to adjust the position of the repulsion magnet on the stator. Timing is tricky. Thanks for the help.  I may have to increase the trigger voltage. I am fabricating a new e-mag using 18 AWG wire on a 2 by 4 inch bobbin, not sure of the turn count but the coil resistance is about 50 ohms. Thanks again for the help. 

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #126 on: May 23, 2017, 02:02:58 AM »
https://en.wikipedia.org/wiki/Litz_wire

Hi, has anyone tried multi strand wire to fabricate a e-mag? It looks like away to reduce the coil resistance.

antijon

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Re: Gravity assisted power project- GRAM
« Reply #127 on: May 24, 2017, 02:23:41 PM »
I've never tried multistranded, but I would think there's a reason it's not normally used. But whether you use that or normal wire, you'd definitely benefit by wiring it in a bifilar arrangement. After all, Tesla invented the bifilar winding for electromagnets. You'd see a faster response when the switch closes and less arcing and sparking on the switch contacts.

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #128 on: May 24, 2017, 04:01:31 PM »
https://youtu.be/EMpry_2-580

https://youtu.be/SMHmLgXWR1U

Hi, I think the main problem is the large  air gap between the e-mag and the rotor mag. There is a limit to the size of e-mag I can fabricate. The design was becoming too complex with too many parts. I found two examples of a linear pulse motor that may work better for this project. Thanks for the help. I am starting the rebuild. Thanks again. 

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #129 on: May 24, 2017, 04:18:55 PM »
https://youtu.be/7-P-D6JXSPk

The new project configuration will resemble a early motor design. I will use the swing5 configuration for the flywheel with two large linear pulse motors. 

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #130 on: May 24, 2017, 05:59:38 PM »
https://youtu.be/OxuotFUWVGQ

It look like the moving coil design will have the best results.


burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #131 on: May 24, 2017, 08:43:53 PM »

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #132 on: May 25, 2017, 12:41:08 AM »
https://youtu.be/YsLnBcXIH4E

time for a safety lesson 

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #133 on: May 26, 2017, 08:40:21 AM »
https://youtu.be/GALNX54jDL4

Another option, but will require a gear train reduction.

burnit0017

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Re: Gravity assisted power project- GRAM
« Reply #134 on: May 26, 2017, 02:11:49 PM »
I am thinking of using the failed pulse motor attempt rotor with two gap powered devices. The gap devices will be placed in a 180 degree configuration on the outside of the rotor and use a one to one gear set to drive the large swing5 rotor. All the parts are fabricated and I should be able to test soon.

https://youtu.be/GALNX54jDL4