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Showing results 1 to 25 of 86
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Search: Posts Made By: harctan
Forum: Renewable Energy 01-14-2014, 11:14 AM
Replies: 60
Views: 16,845
Posted By harctan
Hello Matt, the geometry of both the Newman and...

Hello Matt, the geometry of both the Newman and the Keppe are pretty much identical, as far as I can tell. One major difference is the size as we mentioned above. Also the Newman motor uses brushes...
Forum: Renewable Energy 01-13-2014, 11:04 PM
Replies: 60
Views: 16,845
Posted By harctan
Thank you both for your comments, I'm glad you...

Thank you both for your comments, I'm glad you enjoyed the video. I'm not sure how I would go about converting it to a Newman motor. It is my understanding that the high efficiency claimed by Newman...
Forum: Renewable Energy 01-13-2014, 06:52 PM
Replies: 60
Views: 16,845
Posted By harctan
I made a video with the final results, test...

I made a video with the final results, test procedure, measurements and calculations for anyone interested: Final results on keppe pulse motor project - YouTube...
Forum: Renewable Energy 11-04-2013, 06:42 PM
Replies: 60
Views: 16,845
Posted By harctan
Here is a video with the test setup and the...

Here is a video with the test setup and the calculations: Efficiency measurement of keppe pulse motor - YouTube (http://youtu.be/BGXROAPmA6Y). The results from this test are consistent with my other...
Forum: Renewable Energy 10-22-2013, 09:10 AM
Replies: 60
Views: 16,845
Posted By harctan
I set up a small prony brake and have the first...

I set up a small prony brake and have the first results. At 36V and 11W of input I measured efficiency of ~50%. Although the readings from my instruments are probably not very high in accuracy, I...
Forum: Renewable Energy 09-12-2013, 05:36 PM
Replies: 60
Views: 16,845
Posted By harctan
Hello Farmhand, thanks for the feedback. The link...

Hello Farmhand, thanks for the feedback. The link that you gave me doesn't seem to lead me to any documents. It looks like it's empty.
Forum: Renewable Energy 09-08-2013, 01:01 PM
Replies: 60
Views: 16,845
Posted By harctan
Thanks to your suggestions above I managed to...

Thanks to your suggestions above I managed to pair the optical switch with the PWM from here: DIY Homemade Signal Generator with Pulse Width Modulation - RMCybernetics...
Forum: Renewable Energy 08-16-2013, 02:32 PM
Replies: 60
Views: 16,845
Posted By harctan
Hello Farmhand, thank you for your input....

Hello Farmhand, thank you for your input. Unfortunately your method is a little too complicated for me right now. If you have any ideas as to how I can achieve a faster turn off so I can get the...
Forum: Renewable Energy 08-15-2013, 03:24 PM
Replies: 60
Views: 16,845
Posted By harctan
The one I'm using is this: H22A1 - FAIRCHILD...

The one I'm using is this: H22A1 - FAIRCHILD SEMICONDUCTOR - OPTO SWITCH, SLOTTED | Farnell United Kingdom (http://uk.farnell.com/fairchild-semiconductor/h22a1/opto-switch-slotted/dp/1021129). What...
Forum: Renewable Energy 08-14-2013, 10:34 AM
Replies: 60
Views: 16,845
Posted By harctan
So the problem with the loss of the flyback spike...

So the problem with the loss of the flyback spike has most definately to do with the optical switch (Motorola H22A1). I tried a reed switch and everything works fine. I strongly prefer to use an...
Forum: Renewable Energy 07-14-2013, 02:15 PM
Replies: 60
Views: 16,845
Posted By harctan
I added a 100K resistor from the base of the npn...

I added a 100K resistor from the base of the npn transistor to ground. If I reduce the current to the optical switch I get lower torque. I can clearly feel it by using my hand to load the motor. I...
Forum: Renewable Energy 07-09-2013, 01:13 PM
Replies: 60
Views: 16,845
Posted By harctan
Hello again Peter. The 65mA were measured...

Hello again Peter. The 65mA were measured including the optical switch, which by itself draws 45mA, leaving 20mA for the motor with no load. The gain from the recapturing of the magnetic field...
Forum: Renewable Energy 06-30-2013, 02:10 PM
Replies: 60
Views: 16,845
Posted By harctan
Finally the motor is operational. You can see the...

Finally the motor is operational. You can see the first run here: keppe pulse motor first run - YouTube (http://youtu.be/Oq9E6Q7EjIs) . The values of the components are as follows, L1= 900 turns of...
Forum: Renewable Energy 06-02-2013, 10:09 AM
Replies: 60
Views: 16,845
Posted By harctan
Hello Peter. You are correct, I will use plastic...

Hello Peter. You are correct, I will use plastic spacers on the brass screws so it won't become a total mess when I wire it. The bearings are standard skateboard bearings meaning 8mm inside diameter,...
Forum: Renewable Energy 06-01-2013, 03:55 PM
Replies: 60
Views: 16,845
Posted By harctan
I cut out the motor housing out of wood as shown...

I cut out the motor housing out of wood as shown in the pictures below. Like everything else in my build it's not perfectly symmetrical. The screws on the housing are brass as to avoid any cogging...
Forum: Renewable Energy 05-28-2013, 01:08 PM
Replies: 60
Views: 16,845
Posted By harctan
After a lot of delay I got the rotor piece from...

After a lot of delay I got the rotor piece from the university machinery. In the attached picture it is shown with the magnets glued on to it. The piece is made from a material that is only slighty...
Forum: Renewable Energy 05-06-2013, 09:53 AM
Replies: 60
Views: 16,845
Posted By harctan
@ pault: The claims about the keppe motor that...

@ pault:
The claims about the keppe motor that I have written and linked above belong to the keppe motor group and are not my own. For me it's just a fun project that will also serve as my thesis so...
Forum: Renewable Energy 05-02-2013, 06:27 PM
Replies: 60
Views: 16,845
Posted By harctan
Hello Farmhand. Thanks for sharing. I find your...

Hello Farmhand. Thanks for sharing. I find your design very interesting and it looks quite efficient. The motor I'm planning on making for now will be simpler than yours, just one coil. If you have...
Forum: Renewable Energy 04-30-2013, 02:40 PM
Replies: 60
Views: 16,845
Posted By harctan
Hello ren. From what I have understood, they...

Hello ren. From what I have understood, they don't imply that the Bedini-Cole window motor has no torque. Rather they say that it wasn't designed with torque as the main focus in contrast to the...
Forum: Renewable Energy 04-15-2013, 10:09 AM
Replies: 60
Views: 16,845
Posted By harctan
Your designs sound much more advanced than mine....

Your designs sound much more advanced than mine. I'm still trying to figure out how to replace the transistors with mosfets to see if there'll be any difference.
Forum: Renewable Energy 04-13-2013, 09:27 AM
Replies: 60
Views: 16,845
Posted By harctan
Hello PeterK. I usually run the motor from a...

Hello PeterK. I usually run the motor from a power supply so no need for charging. Also even when I use a battery, from what I have read from Bedini technology, it's not very efficient to charge the...
Forum: Renewable Energy 04-12-2013, 08:24 PM
Replies: 60
Views: 16,845
Posted By harctan
The keppe motor is in constant development and...

The keppe motor is in constant development and with further modifications it's efficiency could increase. And if that doesn't happen, that's ok too. I find the project well suited for my skills and...
Forum: Renewable Energy 04-12-2013, 09:08 AM
Replies: 60
Views: 16,845
Posted By harctan
The efficiency of the production unit have been...

The efficiency of the production unit have been measured by themselves at 70% (Keppe Motor :: The Energy of Life :: (http://www.keppemotor.com/en/technical-information.php)) but they claim their more...
Forum: Renewable Energy 04-11-2013, 10:36 PM
Replies: 60
Views: 16,845
Posted By harctan
Hello wrtner, thanks for the input. I'm aware of...

Hello wrtner, thanks for the input. I'm aware of the Adams and Flynn motors. As I explained in my first post the reasons that I chose the keppe motor is for it's simplicity compared to other designs...
Forum: Renewable Energy 04-11-2013, 10:25 PM
Replies: 60
Views: 16,845
Posted By harctan
Hello level. I am aware of the similarities...

Hello level. I am aware of the similarities between the keppe motor and the newman motor as well as the bedini-cole window motor. Here is an explanation from the keppe motor group about this subject:...
Showing results 1 to 25 of 86

 

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