{"id":9602,"date":"2026-09-11T03:19:48","date_gmt":"2026-09-11T00:19:48","guid":{"rendered":"https:\/\/zprim.com.ua\/jak-pratsjujut-spudgani-nauka-pro-zapusk-kartopli-zi-shvidkistju-400\/"},"modified":"2026-09-11T03:19:48","modified_gmt":"2026-09-11T00:19:48","slug":"jak-pratsjujut-spudgani-nauka-pro-zapusk-kartopli-zi-shvidkistju-400","status":"publish","type":"post","link":"https:\/\/zprim.com.ua\/en\/how-spud-guns-work-the-science-behind-firing-potatoes-at-400-mph\/","title":{"rendered":"How Spud Guns Work: The Science Behind Firing Potatoes at 400 MPH"},"content":{"rendered":"<p>At the push of a button, an explosion sends a projectile flying hundreds of feet at nearly 400 miles per hour. It obliterates whatever sits in its path. But this isn\u2019t a cannon. It\u2019s not a rocket launcher. It is a <strong>spud gun<\/strong>.<\/p>\n<p>These devices come in every shape and configuration you can imagine. The barrel size dictates what flies. Potatoes. Tennis balls. PVC rockets. The only rule is simple: the projectile must fit the barrel. Joel Suprise, owner of the Spudgun Technology Center, says the only real limit is imagination.<\/p>\n<blockquote>\n<p>&#8220;The projectiles are pretty much limited to one&#8217;s imagination.&#8221;<\/p>\n<\/blockquote>\n<p>Suprise has run this business full-time since March 2002. He knows the mechanics inside and out. We talked to him to break down the science. How does a kitchen tuber become a high-velocity projectile? What are the safety risks? And why do laws vary so wildly depending on where you live?<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_75 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0417\u043c\u0456\u0441\u0442<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6aa388c396052\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6aa388c396052\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/zprim.com.ua\/en\/how-spud-guns-work-the-science-behind-firing-potatoes-at-400-mph\/#The_Science_of_the_Blast\" >The Science of the Blast<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/zprim.com.ua\/en\/how-spud-guns-work-the-science-behind-firing-potatoes-at-400-mph\/#Choosing_the_Right_Projectile\" >Choosing the Right Projectile<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/zprim.com.ua\/en\/how-spud-guns-work-the-science-behind-firing-potatoes-at-400-mph\/#Safety_and_Legal_Realities\" >Safety and Legal Realities<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/zprim.com.ua\/en\/how-spud-guns-work-the-science-behind-firing-potatoes-at-400-mph\/#Building_Your_Own\" >Building Your Own<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"The_Science_of_the_Blast\"><\/span>The Science of the Blast<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The mechanism is brute force physics. You compress a fuel source. Spark it. The rapid expansion of gas creates pressure. That pressure pushes against the projectile. The barrel guides the flight. The result is speed.<\/p>\n<p>For a spud gun to fire effectively, the seal matters. If gas escapes around the potato, you lose velocity. If the barrel cracks under pressure, you lose everything. This is where material science meets backyard engineering. PVC is common. Steel is stronger. Aluminum is light. Each choice changes the outcome.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Choosing_the_Right_Projectile\"><\/span>Choosing the Right Projectile<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>What you load changes the distance. A whole potato works. A half potato works. But consistency is key. Irregular shapes cause turbulence. Turbulence kills range.<\/p>\n<p>Suprise suggests starting with dense, spherical objects. Tennis balls offer great aerodynamics. They are also safer than hard clay or metal. For DIYers, testing small batches is essential. Find what fits snugly. Find what ignites reliably.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Safety_and_Legal_Realities\"><\/span>Safety and Legal Realities<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>This is not a toy. A projectile moving at 400 mph can break bone. It can shatter glass. It can kill.<\/p>\n<ol>\n<li><strong>Eye Protection:<\/strong> Always wear ANSI-rated safety glasses. No exceptions.<\/li>\n<li><strong>Barrel Integrity:<\/strong> Inspect for cracks before every use. Fatigue leads to failure.<\/li>\n<li><strong>Location:<\/strong> Fire in open areas. Away from people. Away from property.<\/li>\n<\/ol>\n<p>Laws differ by state and country. Some places ban them entirely. Others treat them as firearms. Check your local ordinances before building. Ignorance is not a defense in court.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Building_Your_Own\"><\/span>Building Your Own<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Most home-built spud guns use combustion. Propane or aerosol spray mixes with air. A spark ignites the mixture. The explosion forces the projectile out.<\/p>\n<p>Tools needed:<br>\n&#8211; PVC cutter<br>\n&#8211; Sandpaper<br>\n&#8211; PVC cement<br>\n&#8211; Spark igniter or friction striker<\/p>\n<p>Materials vary. Always prioritize strength over cost. A burst barrel turns into shrapnel. That is a risk no one should take.<\/p>\n<p>Suprise\u2019s center has documented thousands of launches. The data shows consistency wins. Repeatable results come from precise measurements. Not guesswork.<\/p>\n<p>The hobby attracts tinkerers. Scientists. Kids. Everyone wants to see what flies<\/p>\n","protected":false},"excerpt":{"rendered":"<p>At the push of a button, an explosion sends a projectile flying hundreds of feet at nearly 400 miles per hour. It obliterates whatever sits in its path. But this isn\u2019t a cannon. It\u2019s not a rocket launcher. It is a spud gun. These devices come in every shape and configuration you can imagine. The [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9596,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":""},"categories":[77],"tags":[],"wpm_language_slugs":{"cs":"jak-spudguns-funguji-veda-o-vypousteni-brambor-rychlosti-400-mph","de":"wie-spud-guns-funktionieren-die-wissenschaft-hinter-dem-abfeuern-von","en":"how-spud-guns-work-the-science-behind-firing-potatoes-at-400-mph","es":"como-funcionan-las-pistolas-spud-la-ciencia-detras-de-disparar-patatas","fr":"comment-fonctionnent-les-pistolets-spud-la-science-derriere-le-tir","id":"cara-kerja-spud-guns-ilmu-di-balik-menembak-kentang-pada-kecepatan-400","it":"come-funzionano-le-pistole-spud-la-scienza-dietro-la-cottura-delle","nl":"hoe-spud-guns-werken-de-wetenschap-achter-het-afvuren-van","pl":"jak-dzialaja-spudguny-nauka-wystrzeliwania-ziemniakow-z-predkoscia-400","pt":"como-funcionam-as-spud-guns-a-ciencia-por-tras-do-disparo-de-batatas-a","ru-ru":"kak-rabotajut-spudgany-nauka-o-zapuske-kartofelja-so-skorostju-400-mil","uk-ua":"jak-pratsjujut-spudgani-nauka-pro-zapusk-kartopli-zi-shvidkistju-400"},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/posts\/9602"}],"collection":[{"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/comments?post=9602"}],"version-history":[{"count":0,"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/posts\/9602\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/media\/9596"}],"wp:attachment":[{"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/media?parent=9602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/categories?post=9602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zprim.com.ua\/en\/wp-json\/wp\/v2\/tags?post=9602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}