Difference between revisions of "S.H.O. Drive Mark I"

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(→‎Test Results)
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[[File:3rd_S.H.O._Drive_Build_Day_(2016.08.31)_-_32.JPG|thumb|left|<div style="float: right">First actual build of S.H.O. Coils (magnets inside)</div>]]
 
[[File:3rd_S.H.O._Drive_Build_Day_(2016.08.31)_-_32.JPG|thumb|left|<div style="float: right">First actual build of S.H.O. Coils (magnets inside)</div>]]
 
</div>
 
</div>
−
The magnets were not assembled according to most recent planned design at (https://www.youtube.com/watch?v=huy53KdwAE4) due to difficulties encountered during the assembly procedure. The magnets that were purchased "insisted" that they form a rod-shaped magnet. As a result, it resembled an earlier design (based on a magnet stack of dimensions of 6" x 1.5" x 1.5"). The most recent planned design (https://www.youtube.com/watch?v=huy53KdwAE4) was created from from prior plans of the S.H.O. Drive because it was uncertain that earlier designs would work at all.
+
The magnets were not assembled according to most recent planned design at (https://www.youtube.com/watch?v=huy53KdwAE4) due to difficulties encountered during the assembly procedure. The magnets that were purchased "insisted" that they form a rod-shaped magnet. As a result, it resembled an earlier design (based on a magnet stack of dimensions of 6" x 1.5" x 1.5"). The most recent planned design (https://www.youtube.com/watch?v=huy53KdwAE4) is very different than prior plans of the S.H.O. Drive because it was uncertain that earlier designs would work at all.
−
<br>The key issue with earlier designs was that the original thinking was that the influence of the side fluxes were minimal and so that the magnet would operated by interacting with the magnetic field that was inverted in the center. As it turns out, in the original geometry, they account for about half of the magnetic flux linkage in the system. Subsequently upon realizing this mistake, it was originally thought that the variation of the intensity of the magnetic fields at the outer radius of the coils would cause attraction that would cause rotation in the desired direction when the magnet was angularly displaced away from horizontal. However, it was also known that if the arms were too short that there would be a "sticky spot" where the magnet would slow down, although whether it was to a stop was at the time still yet to be determined.
+
<br>The key issue with earlier designs was that the original thinking was that the influence of the side fluxes were minimal and so that the magnet would operate by interacting with the magnetic field that was inverted in the center. As it turns out, in the original geometry, they account for about half of the magnetic flux linkage in the system. Subsequently upon realizing this mistake, it was originally thought that the variation of the intensity of the magnetic fields at the outer radius of the coils would cause attraction that would cause rotation in the desired direction when the magnet was angularly displaced away from horizontal. However, it was also known that if the arms were too short that there would be a "sticky spot" where the magnet would slow down, although whether it was to a stop was at the time still yet to be determined.
−
<br>Since the coils were made before the magnets, I was unable to adapt the coils according to the new plan because they were made shorter (21" across instead of 24") in anticipation of a smaller magnet assembly. Building the coils before the magnets was actually intentional because the thinking was that the coils were the most risky part and the goal was to build both the coils and the magnet in the same video. Instead, the magnet stack was built too large and the coils have shortened arms with a "sticky spot" and so the rotors stops after only a few rotations after being pushed by hand. I also observed no acceleration effect at all when the magnet was moving away from the horizontal position. The acceleration effect would have been due to the variation of intensity of the radially-directed part of the magnetic field at the outer radius of the coils. I have just remembered now that the reason for this variation was that the arms were able to reach all way to at least the "center plane" of the coils as one can observed in the S.H.O. Drive logo.
+
<br>Since the coils were made before the magnets, I was unable to adapt the coils according to the new plan because they were made shorter (21" across instead of 24") in anticipation of a smaller magnet assembly. Building the coils before the magnets was actually intentional because the thinking was that the coils were the most risky part and the goal was to build both the coils and the magnet in the same video. Instead, the magnet stack was built too large and the coils have shortened arms with a "sticky spot", and so the rotors stops after only a few rotations after being pushed vigorously by hand. I also observed no acceleration effect at all when the magnet was moving away from the horizontal position. The acceleration effect would have been due to the variation of intensity of the radially-directed part of the magnetic field at the outer radius of the coils. I have just remembered now that the reason for this variation was that the arms were able to reach all way to at least the "center plane" of the coils as one can observe in the S.H.O. Drive logo, which would cause a reduced intensity in the radial-direct part of the magnetic field relative to its strength at the upper and lower parts of the "S".
−
<br>The great advantage with the new design at (https://www.youtube.com/watch?v=huy53KdwAE4) is that it lacks any sort of sticky spots. However, the magnets I had originally purchased were intended to make the magnet stack of 6" x 1.5" x 1.5" and they are unstable when set side-by-side horizontally. So the next step is to buy magnets capable of making the desired magnet arrangement as per (https://www.youtube.com/watch?v=huy53KdwAE4), and then fold the existing coils into the new design. This process should be finished before the end of this fall. Sincerely,  ''[[User:S.H.O.|S.H.O.]] <sup>[[User_talk:S.H.O.|talk]]</sup>'' 17:40, 2 September 2016 (PDT)
+
<br>The great advantage with the new design at (https://www.youtube.com/watch?v=huy53KdwAE4) is that it lacks any sort of sticky spots. In this newer design, the coil magnetic fields that dominate are the ones located at the outer radius. This is due to the tighter packing of the S-shape as compared to the older design. However, the magnets I had originally purchased were intended to make the magnet stack of 6" x 1.5" x 1.5" and they are unstable when set side-by-side horizontally. When I attempted to fit this "square peg" into round hole, the magnets decided form the rod-shaped magnet that I chose ''not'' to build. So the next step is to buy magnets capable of easily forming making the desired magnet arrangement as per (https://www.youtube.com/watch?v=huy53KdwAE4), and then fold the existing coils into the new design. The magnet pieces will be longer (up to 4" long), but thinner. This will aid in the build process, which should be finished before the end of this fall. Sincerely,  ''[[User:S.H.O.|S.H.O.]] <sup>[[User_talk:S.H.O.|talk]]</sup>'' 17:40, 2 September 2016 (PDT)
  
 
==Presentation Outline (for S.H.O. Drive Alpha)==
 
==Presentation Outline (for S.H.O. Drive Alpha)==

Revision as of 17:53, 2 September 2016

S.H.O. Drive Mark I will be the world's first S.H.O. drive (unless proven otherwise of course) ;).

Comment Record

S.H.O. Drive Mark I will be the world's first S.H.O. drive. Come back in the next couple months for major updates! S.H.O. talk 21:35, 5 May 2016 (PDT)

S.H.O. Drive Mark Alpha refers to the original plan for world's first S.H.O. Drive (April 18, 2016). The actual build will incorporate clear acrylic tubes to elevate the wooden panels inside the crate for maximum transparency and minimization of the ways to hide batteries. A build and demonstration was planned for the 4th of July, but I decided that more planning was need in terms of the logistics of the demonstration as well as the final shape of the S.H.O. Coils. The build time to make the S.H.O. Drive is, and I estimate, to be around 5 hours. Since the video showing the build must be done in one take, I have to make sure that I have my ideas lined up, so this way they come out smoothly in the presentation.
Also, cost information is not listed for S.H.O. Drive Alpha because it is preliminary work, but when the world's first S.H.O. drive is built, the cost information for that build will be made available. Sincerely, S.H.O. talk 20:06, 4 July 2016 (PDT)

Wood of any kind has been completely eliminated from the planned S.H.O. Drive build. The acrylic rods have been cut (August 14, 2016), and the coils and magnets have been assembled (August 26, 2016). However, the magnets were not built according to the new plan due to assembly mishaps. So the bending of the rectangular copper windings need to be rethought, but definitely into a different S-shape. The "S-arms" will have about the same length but over fewer degrees of arc due to a larger radius. The "S-arms" will likely have "hands" bent away, radially, from the shaft to reduce drag. Also newly accounted for is the increase of the phase angle between the voltage and current as rpm increases, and so the "S-arms" will be planned to have around 90 to 135 degrees of arc. S.H.O. talk 11:48, 28 August 2016 (PDT)

Test Results

Original S.H.O. Drive Plans.
Compare to the most recent plan:
First actual build of S.H.O. Coils
First actual build of S.H.O. Coils (magnets inside)

The magnets were not assembled according to most recent planned design at (https://www.youtube.com/watch?v=huy53KdwAE4) due to difficulties encountered during the assembly procedure. The magnets that were purchased "insisted" that they form a rod-shaped magnet. As a result, it resembled an earlier design (based on a magnet stack of dimensions of 6" x 1.5" x 1.5"). The most recent planned design (https://www.youtube.com/watch?v=huy53KdwAE4) is very different than prior plans of the S.H.O. Drive because it was uncertain that earlier designs would work at all.
The key issue with earlier designs was that the original thinking was that the influence of the side fluxes were minimal and so that the magnet would operate by interacting with the magnetic field that was inverted in the center. As it turns out, in the original geometry, they account for about half of the magnetic flux linkage in the system. Subsequently upon realizing this mistake, it was originally thought that the variation of the intensity of the magnetic fields at the outer radius of the coils would cause attraction that would cause rotation in the desired direction when the magnet was angularly displaced away from horizontal. However, it was also known that if the arms were too short that there would be a "sticky spot" where the magnet would slow down, although whether it was to a stop was at the time still yet to be determined.
Since the coils were made before the magnets, I was unable to adapt the coils according to the new plan because they were made shorter (21" across instead of 24") in anticipation of a smaller magnet assembly. Building the coils before the magnets was actually intentional because the thinking was that the coils were the most risky part and the goal was to build both the coils and the magnet in the same video. Instead, the magnet stack was built too large and the coils have shortened arms with a "sticky spot", and so the rotors stops after only a few rotations after being pushed vigorously by hand. I also observed no acceleration effect at all when the magnet was moving away from the horizontal position. The acceleration effect would have been due to the variation of intensity of the radially-directed part of the magnetic field at the outer radius of the coils. I have just remembered now that the reason for this variation was that the arms were able to reach all way to at least the "center plane" of the coils as one can observe in the S.H.O. Drive logo, which would cause a reduced intensity in the radial-direct part of the magnetic field relative to its strength at the upper and lower parts of the "S".
The great advantage with the new design at (https://www.youtube.com/watch?v=huy53KdwAE4) is that it lacks any sort of sticky spots. In this newer design, the coil magnetic fields that dominate are the ones located at the outer radius. This is due to the tighter packing of the S-shape as compared to the older design. However, the magnets I had originally purchased were intended to make the magnet stack of 6" x 1.5" x 1.5" and they are unstable when set side-by-side horizontally. When I attempted to fit this "square peg" into round hole, the magnets decided form the rod-shaped magnet that I chose not to build. So the next step is to buy magnets capable of easily forming making the desired magnet arrangement as per (https://www.youtube.com/watch?v=huy53KdwAE4), and then fold the existing coils into the new design. The magnet pieces will be longer (up to 4" long), but thinner. This will aid in the build process, which should be finished before the end of this fall. Sincerely, S.H.O. talk 17:40, 2 September 2016 (PDT)

Presentation Outline (for S.H.O. Drive Alpha)

Presentation

Build Gallery

August 14, 2016

S.H.O. Drive CrateRear View
S.H.O. Drive Crate
Rear View 
S.H.O. Drive CrateRear View (Leveled)
S.H.O. Drive Crate
Rear View (Leveled) 
S.H.O. Drive CrateRear View (with flash)
S.H.O. Drive Crate
Rear View (with flash) 
S.H.O. Drive CrateInterior View
S.H.O. Drive Crate
Interior View 
S.H.O. Drive CrateInterior View (Center)
S.H.O. Drive Crate
Interior View (Center) 
S.H.O. Drive CrateInterior View from Rear (revealing left-side wall)
S.H.O. Drive Crate
Interior View from Rear (revealing left-side wall) 
S.H.O. Drive CrateInterior View from Rear (revealing right-side wall)
S.H.O. Drive Crate
Interior View from Rear (revealing right-side wall) 
S.H.O. Drive CrateDiagonal View (Top Left Rear)
S.H.O. Drive Crate
Diagonal View (Top Left Rear) 
S.H.O. Drive CrateFront View
S.H.O. Drive Crate
Front View 
S.H.O. Drive CrateDiagonal View (Top Front)
S.H.O. Drive Crate
Diagonal View (Top Front) 
S.H.O. Drive CrateDiagonal View (Top Left Front)
S.H.O. Drive Crate
Diagonal View (Top Left Front) 
S.H.O. Drive CrateDiagonal View (Top Right Rear)
S.H.O. Drive Crate
Diagonal View (Top Right Rear) 
S.H.O. Drive CrateDiagonal View (Top Rear)
S.H.O. Drive Crate
Diagonal View (Top Rear) 
S.H.O. Drive CrateTop View
S.H.O. Drive Crate
Top View 
S.H.O. Drive Build Roomon August 14, 2016 (with North Wall)
S.H.O. Drive Build Room
on August 14, 2016 (with North Wall) 
S.H.O. Drive Build Roomon August 14, 2016 (with South Wall)
S.H.O. Drive Build Room
on August 14, 2016 (with South Wall) 

August 26, 2016

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August 30-31, 2016

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August 31, 2016

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Dimensions

Distance along shaft length (Depth)

 For design plan as of August 14, 2016
 
 inches
 1 7/8 back end assembly behind panel
 5/8   square acrylic support rod
 1/4   square acrylic support rod
 1/2   acrylic panel
 7/8   vinyl cup hooks
 3/8   air gap
 1 1/2 neo magnets
 3/8   air gap
 7/8   vinyl cup hooks
 1/2   acrylic panel
 1/4   square acrylic support rod
 5/8   square acrylic support rod
 3 3/8 front end assembly in front of panel
 
 12    total length of shaft

 For design plan as of August 28, 2016

April 2016 Presentation

(Top)

I Let's Build the S.H.O. Drive! - Slide 001 of 176.png
Introduction
Summary of measuring devices, back up and safety equipment, and camcorder (+accessories)
1 Let's Build the S.H.O. Drive! - Slide 018 of 176.png
Phase 1
Holes, brass hinges, square nuts
2 Let's Build the S.H.O. Drive! - Slide 044 of 176.png
Phase 2
Neodymium magnets and bearings
3 Let's Build the S.H.O. Drive! - Slide 054 of 176.png
Phase 3
Spool, coils, and ceiling hooks
4 Let's Build the S.H.O. Drive! - Slide 076 of 176.png
Phase 4
No hidden batteries, increase rigidity, hex nuts, terminal rings, toggle switch, fan blades, and extended test run
5 Let's Build the S.H.O. Drive! - Slide 133 of 176.png
Phase 5
Heavy duty basket, S.H.O. Drive insertion, secure meters, and portable extended test run
6 Let's Build the S.H.O. Drive! - Slide 145 of 176.png
Phase 6
Square tote, plastic spools, protective edge trim, and enclosed extended test run
7 Let's Build the S.H.O. Drive! - Slide 153 of 176.png
Phase 7
Prepare elevated test platform, outdoor test setup, camcorder hookup to portable power, and outdoor extended test run

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HQ ● Glossary ● April 2016 Presentation

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