{"id":8482,"date":"2024-01-12T12:29:58","date_gmt":"2024-01-12T12:29:58","guid":{"rendered":"https:\/\/purplemeanie.co.uk\/?p=8482"},"modified":"2025-01-31T13:05:01","modified_gmt":"2025-01-31T13:05:01","slug":"pmsm-motor-internals-video","status":"publish","type":"post","link":"https:\/\/staging.purplemeanie.co.uk\/index.php\/2024\/01\/12\/pmsm-motor-internals-video\/","title":{"rendered":"PMSM Motor Internals Video"},"content":{"rendered":"\n<p>As part of a larger explainer video I wanted to show how a Permanent Magnet Synchronous Motor Works.<\/p>\n\n\n\n<p>I wanted to show how the stator and rotor interacted with their respective magnetic fields and currents.<\/p>\n\n\n\n<p>The video shows how a simplified motor is constructed with a Stator and Rotor and then breaks those down to show their respective magnetic fields.<\/p>\n\n\n\n<p>You can find the YouTube Short here:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Animated Permanent Magnet Synchronous Motor\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/N4XISKKEzmM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><a href=\"https:\/\/youtube.com\/shorts\/N4XISKKEzmM\">https:\/\/youtube.com\/shorts\/N4XISKKEzmM<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Realism?<\/h2>\n\n\n\n<p>In reality this motor wouldn&#8217;t work, it&#8217;s just a simplified model to show concepts. A real motor would have multiple stator windings (coils) per phase and there would be more than two poles to the rotor (more magnets spaced around the rotor rim). <\/p>\n\n\n\n<p>I&#8217;ve also not gone into how the phase offset between stator magnetic fields and rotor fields would determine torque &#8211; I may do that as a more in-depth video at some point.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TLDR;<\/h2>\n\n\n\n<p>The &#8220;Too Long Don&#8217;t Read&#8221; of this project is:<\/p>\n<ul>\n<li>3D Model Created in Blender<\/li>\n<li>Models imported to Final Cut Pro<\/li>\n<li>Square, Vertical and Horizontal Projects exported<\/li>\n<li>Vertical uploaded to Instagram, Facebook and YouTube Shorts<\/li>\n<\/ul>\n\n\n\n<p>The Blender file looks like this&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2048\" height=\"1284\" data-attachment-id=\"8484\" data-permalink=\"https:\/\/staging.purplemeanie.co.uk\/index.php\/2024\/01\/12\/pmsm-motor-internals-video\/motor-internals-blender-screenshot-2024-01-12-at-11-56-51\/\" data-orig-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51.png\" data-orig-size=\"3854,2416\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51-2048x1284.png\" src=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51-2048x1284.png\" alt=\"\" class=\"wp-image-8484\" srcset=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51-2048x1284.png 2048w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51-600x376.png 600w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51-768x481.png 768w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Motor-Internals-Blender-Screenshot-2024-01-12-at-11.56.51-1536x963.png 1536w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><figcaption class=\"wp-element-caption\">Permanent Magnet Synchronous Motor Blender Animation File<\/figcaption><\/figure>\n\n\n\n<p>Most of the work for this animation is done in Blender, with Final Cut Pro just doing the compositing (I really should learn how to do that in Blender).<\/p>\n\n\n\n<p>The bulk of that Blender work was in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Animating the &#8220;blobs&#8221; that show stator winding current flow (Geometry Nodes, see image below)<\/li>\n\n\n\n<li>Stator winding magnetic field animation (Geometry Nodes)<\/li>\n\n\n\n<li>Force vectors showing Stator magnetic field to Rotor permanent magnet field (Geometry Nodes)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Stator Currents<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2048\" height=\"871\" data-attachment-id=\"8491\" data-permalink=\"https:\/\/staging.purplemeanie.co.uk\/index.php\/2024\/01\/12\/pmsm-motor-internals-video\/stator-currents-gn\/\" data-orig-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Currents-GN.png\" data-orig-size=\"4217,1793\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Stator-Currents-GN\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Currents-GN-2048x871.png\" src=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Currents-GN-2048x871.png\" alt=\"\" class=\"wp-image-8491\" srcset=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Currents-GN-2048x871.png 2048w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Currents-GN-600x255.png 600w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Currents-GN-768x327.png 768w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Currents-GN-1536x653.png 1536w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><\/figure>\n\n\n\n<p>This Geometry Nodes setup is based on one I&#8217;ve used before. There are probably way better ways of doing this but the basic concept is to:<\/p>\n<ul>\n<li>Resample a curve and assign it a number of &#8220;slots&#8221;. This is the total number of positions that a blob can appear at.<\/li>\n<li>Then work out which slots should have a blob for any given frame<\/li>\n<li>For this animation I used the new Simulation Nodes concept to add\/subtract movement of the blobs per frame, which allowed for a smoother animation as the speed of the current changes over time.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Stator Magnetic Field<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2048\" height=\"816\" data-attachment-id=\"8492\" data-permalink=\"https:\/\/staging.purplemeanie.co.uk\/index.php\/2024\/01\/12\/pmsm-motor-internals-video\/stator-mag-fields-gn\/\" data-orig-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Mag-Fields-GN.png\" data-orig-size=\"2918,1162\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Stator-Mag-Fields-GN\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Mag-Fields-GN-2048x816.png\" src=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Mag-Fields-GN-2048x816.png\" alt=\"\" class=\"wp-image-8492\" srcset=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Mag-Fields-GN-2048x816.png 2048w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Mag-Fields-GN-600x239.png 600w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Mag-Fields-GN-768x306.png 768w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Stator-Mag-Fields-GN-1536x612.png 1536w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><\/figure>\n\n\n\n<p>Simple Geometry Nodes map to take the Rotor angle and map it to the scale of the Stator Magnetic Field mesh. The mesh was modelled by hand.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Force Vectors<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2048\" height=\"998\" data-attachment-id=\"8493\" data-permalink=\"https:\/\/staging.purplemeanie.co.uk\/index.php\/2024\/01\/12\/pmsm-motor-internals-video\/force-vectors-gn\/\" data-orig-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Force-Vectors-GN.png\" data-orig-size=\"4060,1978\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Force-Vectors-GN\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Force-Vectors-GN-2048x998.png\" src=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Force-Vectors-GN-2048x998.png\" alt=\"\" class=\"wp-image-8493\" srcset=\"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Force-Vectors-GN-2048x998.png 2048w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Force-Vectors-GN-600x292.png 600w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Force-Vectors-GN-768x374.png 768w, https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/Force-Vectors-GN-1536x748.png 1536w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><\/figure>\n\n\n\n<p>This one was tricky. The Geometry Node setup use a bunch of empties.<\/p>\n<ul>\n<li>Three empties placed in the middle of the stator coils<\/li>\n<li>Two empties placed in the middle of the rotor magnets, parented to the rotor<\/li>\n<li>The GN setup then works out the distance between the stator empties and the rotor empties, and creates vectors between the empties.<\/li>\n<li>Straight line &#8220;Curves&#8221; are instanced on the vectors centre point (index 1 or 0,1,2)<\/li>\n<li>Lines are then instanced at the centre of the vectors and thickness applied.<\/li>\n<\/ul>\n<p>I also created a version of these force vectors with arrows at the end of each vector. But&#8230;. that really needed the arrows to point in the force direction and I was out of time to figure out how that could work. And of course it would be good to colour code the forces directionality too.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As part of a larger explainer video I wanted to show how a Permanent Magnet Synchronous Motor Works. I wanted to show how the stator and rotor interacted with their respective magnetic fields and currents. The video shows how a simplified motor is constructed with a Stator and Rotor and then breaks those down to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8499,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"New Blog Post about how I created this Motor Animation.\n#Blender #FinalCutPro #PuttingTheEVInSeven","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[51,38,26],"tags":[],"class_list":["post-8482","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-caterham-blog","category-electric-vehicles","category-youtube"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/01\/PMSM-Internals-Header.png","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/phg0Uj-2cO","jetpack-related-posts":[{"id":8552,"url":"https:\/\/staging.purplemeanie.co.uk\/index.php\/2024\/03\/03\/electric-vehicle-components-youtube-ptevis-2-2\/","url_meta":{"origin":8482,"position":0},"title":"ELECTRIC VEHICLE COMPONENTS &#8211; YOUTUBE PTEVIS 2.2","author":"John Martin","date":"March 3, 2024","format":false,"excerpt":"https:\/\/youtu.be\/fSu9B_tW3zM What's in an Electric Vehicle - PTEVIS Part 2.2 This is the second of two explainer videos I\u2019ve created to help YouTube viewers understand the concepts, terminology and physics of what\u2019s going on in my Caterham Seven EV conversion. I\u2019ve made these two videos so I can refer back\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/staging.purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS-2-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS-2-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS-2-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS-2-2.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS-2-2.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":8548,"url":"https:\/\/staging.purplemeanie.co.uk\/index.php\/2024\/02\/25\/the-electric-in-electric-vehicles-youtube-ptevis-2-1\/","url_meta":{"origin":8482,"position":1},"title":"The Electric in Electric Vehicles &#8211; YOUTUBE PTEVIS 2.1","author":"John Martin","date":"February 25, 2024","format":false,"excerpt":"https:\/\/youtu.be\/LEBzMDAg6gE The Electric in Electric Vehicles This is the first of two explainer videos I\u2019ve created to help YouTube viewers understand the concepts, terminology and physics of what\u2019s going on in my Caterham Seven EV conversion. I\u2019ve made the videos so I don\u2019t need to keep explaining each concept every\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/staging.purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS2.1-002-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS2.1-002-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS2.1-002-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS2.1-002-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS2.1-002-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2024\/03\/PTEVIS2.1-002-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":10884,"url":"https:\/\/staging.purplemeanie.co.uk\/index.php\/2025\/04\/30\/putting-the-ev-in-seven-progress-2-strip-down-and-weigh-in\/","url_meta":{"origin":8482,"position":2},"title":"Putting the EV in sEVen &#8211; Progress #2 Strip Down and Weigh-in","author":"John Martin","date":"April 30, 2025","format":false,"excerpt":"Time for another EV progress video. In this quick video I cover the strip down of the project car to remove the Internal Combustion Engine (ICE) drivetrain. There's also a couple of interludes where I visit: Fully Charged Show, Caterham Seven EV launch, Goodwood, the Taffia Fish and Chip Run\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/staging.purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/04\/PTEVIS4-001-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/04\/PTEVIS4-001-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/04\/PTEVIS4-001-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/04\/PTEVIS4-001-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/04\/PTEVIS4-001-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/04\/PTEVIS4-001-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":7838,"url":"https:\/\/staging.purplemeanie.co.uk\/index.php\/2021\/05\/16\/2021-cadwell-park-track-day-youtube-behind-the-scenes\/","url_meta":{"origin":8482,"position":3},"title":"2021 Cadwell Park Track Day &#8211; YouTube Behind the Scenes","author":"John Martin","date":"May 16, 2021","format":false,"excerpt":"Aaaannnddd... Here's another quick behind the scenes post about making my second Lotus Seven Club track day introduction video. If you want some background on what this is all about then this post has it all ( 2021 Castle Combe Track Day INTRO \u2013 Lotus Seven Club YouTube Video ),\u2026","rel":"","context":"In &quot;Caterham &amp; Lotus 7 Club&quot;","block_context":{"text":"Caterham &amp; Lotus 7 Club","link":"https:\/\/staging.purplemeanie.co.uk\/index.php\/category\/caterham-blog\/caterham-lotus-7-club\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2021\/05\/Cadwell-Park-Trackday-2021-Thumbnail-004.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2021\/05\/Cadwell-Park-Trackday-2021-Thumbnail-004.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2021\/05\/Cadwell-Park-Trackday-2021-Thumbnail-004.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2021\/05\/Cadwell-Park-Trackday-2021-Thumbnail-004.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2021\/05\/Cadwell-Park-Trackday-2021-Thumbnail-004.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2021\/05\/Cadwell-Park-Trackday-2021-Thumbnail-004.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":11066,"url":"https:\/\/staging.purplemeanie.co.uk\/index.php\/2025\/12\/14\/project-seven-pt8-custom-gearbox-assembly-youtube-video\/","url_meta":{"origin":8482,"position":4},"title":"Project sEVen pt8: Custom Gearbox Assembly &#8211; YOUTUBE VIDEO","author":"John Martin","date":"December 14, 2025","format":false,"excerpt":"Well that didn't go quite to plan. I was hoping to take just a couple of days on this video, but in the end it was 10 or so. And therefore little progress on the actual EV project... Grrr! I started out with one intention but then realised the video\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/staging.purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/12\/PTEVIS-008-Gearbox-Assembly-001-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/12\/PTEVIS-008-Gearbox-Assembly-001-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/12\/PTEVIS-008-Gearbox-Assembly-001-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/12\/PTEVIS-008-Gearbox-Assembly-001-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/12\/PTEVIS-008-Gearbox-Assembly-001-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2025\/12\/PTEVIS-008-Gearbox-Assembly-001-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":6539,"url":"https:\/\/staging.purplemeanie.co.uk\/index.php\/2020\/07\/21\/build-a-caterham-420r-in-30-minutes-youtube-video\/","url_meta":{"origin":8482,"position":5},"title":"Build A Caterham 420R in 30 Minutes &#8211; YouTube Video","author":"John Martin","date":"July 21, 2020","format":false,"excerpt":"On July 11th 2020, I uploaded a bit of a longer video to YouTube documenting\u00a0the build of my 420R from nearly 3 years previously. https:\/\/youtu.be\/sVfQUB0gqn0 I'd always planned to do this video, but for the usual many reasons it only got a few hours here and a few hours there\u2026","rel":"","context":"In &quot;Caterham 420R Build&quot;","block_context":{"text":"Caterham 420R Build","link":"https:\/\/staging.purplemeanie.co.uk\/index.php\/category\/caterham-blog\/caterham-420r-build\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2020\/07\/Purplemeanie-Build-Timelapse-Thumnail-001.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2020\/07\/Purplemeanie-Build-Timelapse-Thumnail-001.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2020\/07\/Purplemeanie-Build-Timelapse-Thumnail-001.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2020\/07\/Purplemeanie-Build-Timelapse-Thumnail-001.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2020\/07\/Purplemeanie-Build-Timelapse-Thumnail-001.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.purplemeanie.co.uk\/wp-content\/uploads\/2020\/07\/Purplemeanie-Build-Timelapse-Thumnail-001.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/8482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=8482"}],"version-history":[{"count":6,"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/8482\/revisions"}],"predecessor-version":[{"id":8496,"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/8482\/revisions\/8496"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/media\/8499"}],"wp:attachment":[{"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=8482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/categories?post=8482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/staging.purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/tags?post=8482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}