{"id":18414,"date":"2026-06-03T20:24:14","date_gmt":"2026-06-03T20:24:14","guid":{"rendered":"https:\/\/easyrecipes.milaf.ma\/?p=18414"},"modified":"2026-06-03T20:24:14","modified_gmt":"2026-06-03T20:24:14","slug":"my-son-found-this-in-our-yard-and-now-were-wondering-what-this-strange-thing-is-do-you-recognize-whats-in-the-photo","status":"publish","type":"post","link":"https:\/\/easyrecipes.milaf.ma\/index.php\/2026\/06\/03\/my-son-found-this-in-our-yard-and-now-were-wondering-what-this-strange-thing-is-do-you-recognize-whats-in-the-photo\/","title":{"rendered":"My son found this in our yard\u2026 and now we\u2019re wondering what this strange thing is. Do you recognize what\u2019s in the photo?\u2026"},"content":{"rendered":"

An\u00a0old bicycle light generator<\/strong>\u00a0usually refers to a\u00a0bicycle dynamo<\/strong>\u2014a small device that generates electricity from the motion of the bike to power lights.\u00a0\"\ud83d\udeb2\"<\/p>\n

\"\ud83d\udca1\"<\/p>\n

What it is<\/h3>\n

The classic type is the\u00a0bottle dynamo<\/span><\/span><\/strong>. It\u2019s mounted on the frame so a small roller presses against the bicycle tire.<\/p>\n

How it works<\/h3>\n
    \n
  1. \n

    When you pedal, the\u00a0wheel rotates<\/strong>.<\/p>\n<\/li>\n

  2. \n

    The\u00a0roller on the dynamo spins<\/strong>\u00a0against the tire.<\/p>\n<\/li>\n

  3. \n

    Inside the dynamo, a\u00a0magnet rotates in a coil<\/strong>\u00a0(based on the principle of\u00a0electromagnetic induction<\/span><\/span><\/strong>).<\/p>\n<\/li>\n

  4. \n

    This produces\u00a0electric current<\/strong>\u00a0that powers the bike\u2019s lights.<\/p>\n<\/li>\n<\/ol>\n

    Common types of old generators<\/h3>\n
      \n
    • \n

      Bottle Dynamo<\/span><\/span><\/strong>\u00a0\u2013 mounted on the frame and touches the tire.<\/p>\n

        \n
      • \n

        Hub Dynamo<\/span><\/span><\/strong>\u00a0\u2013 built inside the wheel hub (more modern but still mechanical).<\/p>\n<\/li>\n<\/ul>\n

        Pros of the old dynamo lights<\/h3>\n
          \n
        • \n

          No batteries needed\u00a0\"\ud83d\udd0b\"<\/p>\n<\/li>\n

        • \n

          Works whenever the bike moves<\/p>\n<\/li>\n

        • \n

          Durable and simple<\/p>\n<\/li>\n<\/ul>\n

          Cons<\/h3>\n
            \n
          • \n

            Light becomes dim when riding slowly<\/p>\n<\/li>\n

          • \n

            Adds a little resistance while pedaling<\/p>\n<\/li>\n

          • \n

            Can slip in rain if it touches the tire<\/p>\n<\/li>\n<\/ul>\n

            \"\u2705\"\u00a0These generators were very common on bikes in Europe and older bicycles around the world.<\/p>\n

            If you want, I can also show you\u00a0pictures of old bicycle dynamos<\/strong>\u00a0or\u00a0how to connect one to modern LED lights<\/strong>.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

            An\u00a0old bicycle light generator\u00a0usually refers to a\u00a0bicycle dynamo\u2014a small device that generates electricity from the motion of the bike to…<\/p>\n","protected":false},"author":1,"featured_media":18415,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-18414","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts\/18414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/comments?post=18414"}],"version-history":[{"count":1,"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts\/18414\/revisions"}],"predecessor-version":[{"id":18416,"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/posts\/18414\/revisions\/18416"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/media\/18415"}],"wp:attachment":[{"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/media?parent=18414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/categories?post=18414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/easyrecipes.milaf.ma\/index.php\/wp-json\/wp\/v2\/tags?post=18414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}