{"id":2675,"date":"2021-03-11T03:08:31","date_gmt":"2021-03-11T03:08:31","guid":{"rendered":"http:\/\/rcpress.com\/wp\/?p=2675"},"modified":"2021-06-11T02:10:15","modified_gmt":"2021-06-11T02:10:15","slug":"rc-tech-tip-what-brushed-motor-should-you-choose-for-your-direct-drive-rc-boat","status":"publish","type":"post","link":"http:\/\/rcpress.com\/wp\/?p=2675","title":{"rendered":"RC Tech Tip: What brushed motor should you choose for your direct drive RC boat?"},"content":{"rendered":"<p>Direct drive is the most common drive train type for entry level RC boat. There is no gearbox and the motor drives the propeller directly. There is a motor cooling coil formed with thin copper tube that carries heat away through water flow. <strong>Because there is no gearbox, the motor is taking heavy load.<\/strong><\/p>\n<p>When replacing the motor on a direct drive RC boat, torque is more important. A stock silver can is 27T.<\/p>\n<p><a href=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20210117_085316.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2929\" src=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20210117_085316.jpg\" alt=\"\" width=\"892\" height=\"628\" srcset=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20210117_085316.jpg 892w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20210117_085316-300x211.jpg 300w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20210117_085316-768x541.jpg 768w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20210117_085316-675x475.jpg 675w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20210117_085316-480x338.jpg 480w\" sizes=\"(max-width: 892px) 100vw, 892px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2925\" src=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149-1024x768.jpg\" alt=\"\" width=\"891\" height=\"668\" srcset=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149-1024x768.jpg 1024w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149-300x225.jpg 300w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149-768x576.jpg 768w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149-1246x935.jpg 1246w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149-675x506.jpg 675w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149-480x360.jpg 480w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/bocIMG_20210223_225149.jpg 1373w\" sizes=\"(max-width: 891px) 100vw, 891px\" \/><\/a><\/p>\n<p>If you pick anything faster than that such as 21T or 19T, the boat will go faster but the motor will get overloaded real fast. A better choice would be a standard 540 with strong magnet. Strong magnet offers way more torque. And it has a cooling fan inside the motor for better dissipation.<\/p>\n<p><a href=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2019\/12\/brushedccIMG_20210123_232917.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-2893\" src=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2019\/12\/brushedccIMG_20210123_232917-768x1024.jpg\" alt=\"\" width=\"768\" height=\"1024\" srcset=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2019\/12\/brushedccIMG_20210123_232917-768x1024.jpg 768w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2019\/12\/brushedccIMG_20210123_232917-225x300.jpg 225w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2019\/12\/brushedccIMG_20210123_232917-675x900.jpg 675w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2019\/12\/brushedccIMG_20210123_232917-480x640.jpg 480w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2019\/12\/brushedccIMG_20210123_232917.jpg 1030w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2930\" src=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024-1024x768.jpg\" alt=\"\" width=\"768\" height=\"576\" srcset=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024-1024x768.jpg 1024w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024-300x225.jpg 300w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024-768x576.jpg 768w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024-1246x935.jpg 1246w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024-675x506.jpg 675w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024-480x360.jpg 480w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/moIMG_20201104_115024.jpg 1373w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/UOsBAMMrYi8\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>Do NOT use anything faster than 21T on a direct drive system. Doing so will damage the motor and the ESC\u00a0 real quick. The one shown below is a 9T. Motor like this fast requires gearing to produce reasonable torque!<\/p>\n<p><a href=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/9tIMG_20191107_212801.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-3087\" src=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/9tIMG_20191107_212801-768x1024.jpg\" alt=\"\" width=\"768\" height=\"1024\" srcset=\"http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/9tIMG_20191107_212801-768x1024.jpg 768w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/9tIMG_20191107_212801-225x300.jpg 225w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/9tIMG_20191107_212801-675x900.jpg 675w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/9tIMG_20191107_212801-480x640.jpg 480w, http:\/\/rcpress.com\/wp\/wp-content\/uploads\/2021\/03\/9tIMG_20191107_212801.jpg 1030w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Direct drive is the most common drive train type for entry level RC boat. There is no gearbox and the motor drives the propeller directly. There is a motor cooling coil formed with thin copper tube that carries heat away through water flow. Because there is no gearbox, the motor is taking heavy load. When [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2677,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[127,85],"tags":[],"_links":{"self":[{"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/2675"}],"collection":[{"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2675"}],"version-history":[{"count":5,"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/2675\/revisions"}],"predecessor-version":[{"id":3088,"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/2675\/revisions\/3088"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=\/wp\/v2\/media\/2677"}],"wp:attachment":[{"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2675"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/rcpress.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}