{"id":5974,"date":"2023-02-25T11:25:15","date_gmt":"2023-02-25T10:25:15","guid":{"rendered":"https:\/\/mattzobricks.com\/?page_id=5974"},"modified":"2025-08-21T21:48:18","modified_gmt":"2025-08-21T19:48:18","slug":"geometry-r104-curved-switches","status":"publish","type":"page","link":"https:\/\/mattzobricks.com\/de\/lego-track-planning\/track-geometry\/geometry-r104-curved-switches","title":{"rendered":"Geometry: R104 Curved Switches"},"content":{"rendered":"\n<p>The R104 curved switch concept was invented by Mattzobricks in 2020.<\/p>\n\n\n\n<p>The concept was adopted by Trixbrix in 2025 (with slightly longer bow section of the outer curve).<\/p>\n\n\n\n<p>The following illustrations describe the concept.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Type 1: SW-R104CR-16 \/ SW-R104CL-16<\/h2>\n\n\n\n<p>Explanation of &#8220;SW-R104CR-16&#8221;: switch, radius 104, curved, right, straight section 16 studs long.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"920\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-1R-920x1024.png\" alt=\"\" class=\"wp-image-5986\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-1R-920x1024.png 920w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-1R-269x300.png 269w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-1R-768x855.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-1R-1380x1536.png 1380w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-1R.png 1491w\" sizes=\"auto, (max-width: 920px) 100vw, 920px\" \/><figcaption class=\"wp-element-caption\">The idea of the R104 curved switch is to initiate two R104 curved sections that come out with a track distance of exactly 16 studs after 90\u00b0 (from track middle to track middle).<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1017\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-2R-1024x1017.png\" alt=\"\" class=\"wp-image-5988\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-2R-1024x1017.png 1024w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-2R-300x298.png 300w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-2R-150x150.png 150w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-2R-768x763.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-2R.png 1524w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">The concept also works perfectly to create track switches within a 90\u00b0 R104 curve section.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"927\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-3R-927x1024.png\" alt=\"\" class=\"wp-image-5990\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-3R-927x1024.png 927w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-3R-272x300.png 272w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-3R-768x848.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-3R-1391x1536.png 1391w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-90\u00b0-3R.png 1553w\" sizes=\"auto, (max-width: 927px) 100vw, 927px\" \/><figcaption class=\"wp-element-caption\">The concept can be extended by an infinite number of parallel tracks in the curve section.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Type 2: SW-R104CR-22.6 \/ SW-R104CL-22.6<\/h2>\n\n\n\n<p>Explanation of &#8220;SW-R104CR-22.6&#8221;: switch, radius 104, curved, right, straight section ~22.6 studs long.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"655\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-1R-655x1024.png\" alt=\"\" class=\"wp-image-5980\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-1R-655x1024.png 655w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-1R-192x300.png 192w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-1R-768x1201.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-1R-982x1536.png 982w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-1R.png 1018w\" sizes=\"auto, (max-width: 655px) 100vw, 655px\" \/><figcaption class=\"wp-element-caption\">There is also a 45\u00b0 version of the R104 curve switch. The idea is similar as for the 90\u00b0 degree version.<br>The difference is, that the parallel tracks come out after 45\u00b0 already.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"612\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-2R-612x1024.png\" alt=\"\" class=\"wp-image-5982\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-2R-612x1024.png 612w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-2R-179x300.png 179w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-2R-768x1285.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-2R-918x1536.png 918w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-2R.png 959w\" sizes=\"auto, (max-width: 612px) 100vw, 612px\" \/><figcaption class=\"wp-element-caption\">The 45\u00b0 concept also works with parallel tracks.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"659\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-3R-659x1024.png\" alt=\"\" class=\"wp-image-5984\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-3R-659x1024.png 659w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-3R-193x300.png 193w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-3R-768x1194.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-3R-988x1536.png 988w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Section-45\u00b0-3R.png 1109w\" sizes=\"auto, (max-width: 659px) 100vw, 659px\" \/><figcaption class=\"wp-element-caption\">This concept can also be extended by an infinite number of parallel tracks in the curve section.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1016\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Crossover-A-1016x1024.png\" alt=\"\" class=\"wp-image-5976\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Crossover-A-1016x1024.png 1016w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Crossover-A-298x300.png 298w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Crossover-A-150x150.png 150w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Crossover-A-768x774.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Crossover-A-1524x1536.png 1524w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/02\/R104-Curved-Switch-Crossover-A.png 1624w\" sizes=\"auto, (max-width: 1016px) 100vw, 1016px\" \/><figcaption class=\"wp-element-caption\">Two 45\u00b0 R104 curved switch section can be combined to form a double cross over within a 90\u00b0 R104 curve section.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"866\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-6-track-Station-Entry-866x1024.png\" alt=\"\" class=\"wp-image-6285\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-6-track-Station-Entry-866x1024.png 866w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-6-track-Station-Entry-254x300.png 254w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-6-track-Station-Entry-768x908.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-6-track-Station-Entry-1299x1536.png 1299w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-6-track-Station-Entry.png 1580w\" sizes=\"auto, (max-width: 866px) 100vw, 866px\" \/><figcaption class=\"wp-element-caption\">The example shows a compact entry to a 6 track station built with two R104 45\u00b0 curved switches, three standard R104 switches and one R104 double crossing.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Type 3: SW-R104CR-32 \/ SW-R104CL-32<\/h2>\n\n\n\n<p>Explanation of &#8220;SW-R104CR-32&#8221;: switch, radius 104, curved, right, straight section 32 studs long.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"839\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-2-tracks-839x1024.png\" alt=\"\" class=\"wp-image-6287\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-2-tracks-839x1024.png 839w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-2-tracks-246x300.png 246w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-2-tracks-768x937.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-2-tracks-1259x1536.png 1259w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-2-tracks.png 1359w\" sizes=\"auto, (max-width: 839px) 100vw, 839px\" \/><figcaption class=\"wp-element-caption\">The third type of the R104 curved switch (SW-R104CR-32 \/ SW-R104CL-32) has a straight part of two standard straights (2&#215;16 = 32 studs). Consequently, the two branching tracks come out with a track distance of 32 studs after a turn of 90\u00b0.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"922\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-3-tracks-922x1024.png\" alt=\"\" class=\"wp-image-6286\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-3-tracks-922x1024.png 922w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-3-tracks-270x300.png 270w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-3-tracks-768x853.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-3-tracks-1383x1536.png 1383w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-Section-90\u00b0-32-studs-distance-3-tracks.png 1506w\" sizes=\"auto, (max-width: 922px) 100vw, 922px\" \/><figcaption class=\"wp-element-caption\">This switch can be combined with the 45\u00b0 version of the switch.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-8-track-Station-Entry-764x1024.png\" alt=\"\" class=\"wp-image-6288\" srcset=\"https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-8-track-Station-Entry-764x1024.png 764w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-8-track-Station-Entry-224x300.png 224w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-8-track-Station-Entry-768x1030.png 768w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-8-track-Station-Entry-1146x1536.png 1146w, https:\/\/mattzobricks.com\/wp-content\/uploads\/2023\/04\/R104-Curved-Switch-8-track-Station-Entry.png 1412w\" sizes=\"auto, (max-width: 764px) 100vw, 764px\" \/><figcaption class=\"wp-element-caption\">The 32 stud version gives you more options especially when designing complex switch fields.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The R104 curved switch concept was invented by Mattzobricks in 2020. The concept was adopted by Trixbrix in 2025 (with slightly longer bow section of the outer curve). The following illustrations describe the concept. Type 1: SW-R104CR-16 \/ SW-R104CL-16 Explanation of &#8220;SW-R104CR-16&#8221;: switch, radius 104, curved, right, straight section 16 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":474,"menu_order":35,"comment_status":"open","ping_status":"closed","template":"","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"class_list":["post-5974","page","type-page","status-publish","hentry"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"de","enabled_languages":["en","de"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/pages\/5974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/comments?post=5974"}],"version-history":[{"count":16,"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/pages\/5974\/revisions"}],"predecessor-version":[{"id":8538,"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/pages\/5974\/revisions\/8538"}],"up":[{"embeddable":true,"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/pages\/474"}],"wp:attachment":[{"href":"https:\/\/mattzobricks.com\/de\/wp-json\/wp\/v2\/media?parent=5974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}