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Author Topic: Opposed Piston Motor  (Read 45360 times)

tropes

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Re: Opposed Piston Motor
« Reply #30 on: November 25, 2008, 10:19:54 PM »
Hello
I finally have a new motor with some 1.5 inch magnets. I posted the video on U Tube: http://www.youtube.com/watch?v=oHvxB8sFyFo
Tropes

tropes

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Re: Opposed Piston Motor
« Reply #31 on: December 27, 2008, 08:03:04 PM »
An interesting observation:
 When the 2 magnets are repelled by a coil the direction of current is opposite the direction when the 2 magnets are attracted towards the coil. This induced current is captured in a capacitor when the motor is running by using a diode.

tropes

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Re: Opposed Piston Motor
« Reply #32 on: January 15, 2009, 01:03:10 AM »
I am in the process of constructing a crankshaft for a 5 coil, 10 piston "Sotropa Motor". So far I have built 1 coil-2 piston and 2 coil-4 piston models using 1 photointerrupter per coil (see attach.). Using this set-up I would have to use 5 photointerrupters (one for each coil). Is there anyone out there who can tell me how to construct a commutator system that will supply current to each of the 5 coils using just 1 photointerrupter firing every 72 degrees?
Tropes

tropes

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Re: Opposed Piston Motor
« Reply #33 on: January 15, 2009, 01:06:06 AM »
The bottom photo is the 2 coil-4piston set-up.

Thaelin

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Re: Opposed Piston Motor
« Reply #34 on: January 20, 2009, 02:07:48 PM »
   Sadly, you are stuck with one per coil. Cant see any way around that one.
If you used mechanical  contacts, you would still need a set per coil to turn
it on and off at the prescribed time. Just the way of it.

thaelin

tropes

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Re: Opposed Piston Motor
« Reply #35 on: January 20, 2009, 07:28:22 PM »
   Sadly, you are stuck with one per coil. Cant see any way around that one.
If you used mechanical  contacts, you would still need a set per coil to turn
it on and off at the prescribed time. Just the way of it.

thaelin


ThanksThaelin
I suspected that.I am sure however that I will be able to reduce the duration (opening in the slotted wheel) to about 17 degrees for each coil for a total of 80-85 degrees. The beauty of the opposed pistons is that 180 degees of rotation is generated by the attaction of the two magnets. This axial force is greater than the tangential attraction of a round rotor.
 The collection of the BEMF is a simple matter of attaching a diode to each coil wire.
I hope someone will undertake to construct this motor and share their experience. Working in a vaccuum is the shits.

Tropes

Kator01

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Re: Opposed Piston Motor
« Reply #36 on: January 20, 2009, 11:43:58 PM »
Hello Tropes,

when I saw your posts here I remembered this paper of Aspden ( Potter-Debate ) :

http://www.aspden.org/reports/Es4/esr4.htm

Keep up your good work

Regards

Kator01

tropes

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Re: Opposed Piston Motor
« Reply #37 on: January 21, 2009, 01:27:40 AM »
Hello Tropes,

when I saw your posts here I remembered this paper of Aspden ( Potter-Debate ) :

http://www.aspden.org/reports/Es4/esr4.htm

Keep up your good work

Regards

Kator01

Thanks for the great info. The Energy Science Report N0.4 is one of a very few documents which examine the value of a reciprocating magnetic electric motor. Adams maintained that his motor was an attraction motor and realised the value of using magnetic attraction as a " free force".
 What I have not found is research done where Faraday's Law and Lenz's Law are applied to 2 attracting magnets moving towards a coil. Perhaps because of the lack of strong Neo magnets, it was not realized that a strong attraction was possible even when separated by a coil.
Thanks again for the valuable report.
Tropes

tropes

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Re: Opposed Piston Motor
« Reply #38 on: January 22, 2009, 12:24:10 AM »
@Kator
Since I was not able to find any info. regarding Lenz's Law using two opposing magnets, I did an experiment using magnets and coil on my motor. I posted the video at
 http://video.google.ca/videosearch?q=sotropa+motor+r%26d2&hl=en&emb=1&aq=-1&oq=#

solinear

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Re: Opposed Piston Motor
« Reply #39 on: June 25, 2009, 08:23:56 PM »
Why don't you set up 2 piston sets (one on each side) for more consistent torque?

Also, I would probably go with a nice planetary gear set to spin up the rotational speed - probably a 10x gear, so you can run around 600 rpm, spinning up to 6k rpm.  They're only 95% efficiency, but that's way better than any other chain/gear set you'll find (between 85 and 90% efficiency, if you're lucky).

Justalabrat

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Re: Opposed Piston Motor
« Reply #40 on: June 25, 2009, 08:34:06 PM »
Why don't you set up 2 piston sets (one on each side) for more consistent torque?

Also, I would probably go with a nice planetary gear set to spin up the rotational speed - probably a 10x gear, so you can run around 600 rpm, spinning up to 6k rpm.  They're only 95% efficiency, but that's way better than any other chain/gear set you'll find (between 85 and 90% efficiency, if you're lucky).

This website http://www.eng-tips.com/viewthread.cfm?qid=74637
says that chain drives are only about 1% less efficient than gears.

tropes

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Re: Opposed Piston Motor
« Reply #41 on: June 25, 2009, 09:59:11 PM »
Why don't you set up 2 piston sets (one on each side) for more consistent torque?

Also, I would probably go with a nice planetary gear set to spin up the rotational speed - probably a 10x gear, so you can run around 600 rpm, spinning up to 6k rpm.  They're only 95% efficiency, but that's way better than any other chain/gear set you'll find (between 85 and 90% efficiency, if you're lucky).
Thanks for the interest. I would like to answer your question but could you attach a drawing of your concept of "2 piston sets (one on each side)"? My latest video http://www.youtube.com/watch?v=8XHUGD-NPeY illustrates how I am now able the generate power by placing a coil around each piston.
Tropes

solinear

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Re: Opposed Piston Motor
« Reply #42 on: June 25, 2009, 10:21:40 PM »
I was thinking instead of mounting it vertically, mount it horizontally, then stick another set of pistons opposite the current set, then attach the planetary gear set where the generator is connected (with the generator connected to the faster spinning side).

tropes

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Re: Opposed Piston Motor
« Reply #43 on: June 26, 2009, 04:17:44 AM »
I was thinking instead of mounting it vertically, mount it horizontally, then stick another set of pistons opposite the current set, then attach the planetary gear set where the generator is connected (with the generator connected to the faster spinning side).
solinear
I value any input but am having trouble visualizing without a drawing.
Tropes

solinear

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Re: Opposed Piston Motor
« Reply #44 on: November 20, 2009, 12:07:15 AM »
Thanks for the interest. I would like to answer your question but could you attach a drawing of your concept of "2 piston sets (one on each side)"? My latest video http://www.youtube.com/watch?v=8XHUGD-NPeY illustrates how I am now able the generate power by placing a coil around each piston.
Tropes

I previously misunderstood your design (thought you were using the coils to pump the magnets and using those to turn your generator below).  I now understand that the coils are the *output* mechanism and what I thought was a generator is actually a motor.

BTW, in electricity, power = watts.  Are you getting more watts out than you are putting in or just saying that you're getting volts (which have little meaning until you know the amperage and consequently, the watts) out when you pass a magnet through a wire coil?