{"id":152,"date":"2008-03-18T11:28:46","date_gmt":"2008-03-18T15:28:46","guid":{"rendered":"http:\/\/www.etotheipiplusone.net\/?p=152"},"modified":"2008-03-18T11:28:46","modified_gmt":"2008-03-18T15:28:46","slug":"wheelmotor-beta-2-update-2","status":"publish","type":"post","link":"https:\/\/www.etotheipiplusone.net\/?p=152","title":{"rendered":"Wheelmotor Beta 2 Update 2"},"content":{"rendered":"<p>In another episode of &#8220;Hmm, what is Charles building&#8221;, we have&#8230;<\/p>\n<p style=\"text-align: center\"><a href=\"\/pics\/sc2\/sc2_79.jpg\" title=\"What good could possibly come out of this?\"><img decoding=\"async\" src=\"\/pics\/sc2\/sc2_79.jpg\" width=\"512\" \/><\/a><\/p>\n<p>Gee, some aluminum rounds and a large section of steel tubing.<\/p>\n<p style=\"text-align: center\"><a href=\"\/pics\/sc2\/sc2_80.jpg\" title=\"What does this picture tell you? That I have way, WAY too many motor cores?\"><img decoding=\"async\" src=\"\/pics\/sc2\/sc2_80.jpg\" width=\"512\" \/><\/a><\/p>\n<p>Hmm, it really makes you wonder, doesn&#8217;t it?<\/p>\n<p>I opted to skip the Intro to \u00c3\u00bcber-basic EE that today&#8217;s <a href=\"http:\/\/web.mit.edu\/6.01\">6.01<\/a> lecture was covering in order to haunt the <a href=\"http:\/\/web.mit.edu\/cmshop\/\" target=\"_blank\">Central Machine Shop<\/a> for metal. The guys there are awesome, and cut me off a few pieces of aluminum round and this <strong>Seriously Hardc\u00c3\u00b8re<\/strong> steel tubing. They also remember the MIT Battlebots team.<br \/>\nNo, this is not a prototype weapon module, despite the temptations, but rather the ingredients to the wheelmotor. Obviously the motor doesn&#8217;t require such a <strong>Seriously Hardc\u00c3\u00b8re<\/strong> outer shell, but it was the only thickness of tubing (Can something this thick be called <em>tubing<\/em> any more?) they had in the diameter I needed. At first I wanted to get the aluminum in one large chunk, but after some discussion, they cut it into slices since 1) They have a giant bandsaw and I don&#8217;t and 2) It was on the house.<\/p>\n<p>The tubing, though, is likely <strong>Hardc\u00c3\u00b8re<\/strong>-er\u00c2\u00a0 than the <a href=\"http:\/\/miters.mit.edu\">MITERS<\/a> lathe can handle, even with the jaws reversed. I will definitely have to get into one of the main student shops with larger machines to turn it down.<\/p>\n<p>In the mean time, I&#8217;ll work on winding the sucker. Here&#8217;s pics from a few days ago.<\/p>\n<p><a href=\"\/pics\/sc2\/sc2_76.jpg\"><img decoding=\"async\" src=\"\/pics\/sc2\/tnsc2_76.jpg\" \/><\/a>\u00c2\u00a0 Testing windings. On the right is 30 turns of single-strand #22 wire. On the left is 30 turns of double-strand #22 wire for an effective winding gauge of #19. I haven&#8217;t settled on a particular winding yet. That will come after some math, testing, and stretching the R\/C hobby builder rules of thumb to the edge of existence. I will probably end up winding this motor alot milder than the last, and run high voltage.<\/p>\n<p><a href=\"\/pics\/sc2\/sc2_78.jpg\"><img decoding=\"async\" src=\"\/pics\/sc2\/tnsc2_78.jpg\" \/><\/a> One thing that attracts me to keeping the 30T of dual-strand #22 is that everything works out perfectly in terms of fit. I&#8217;m left with a little more than .025 clearance on both sides with the winding ends accounted for. That means I can wind the motor, then stuff the whole thing in a vise and squish down the windings some and not have to worry about wire clearance.<\/p>\n<p>I may be able to stuff on more, but we&#8217;ll see.<\/p>\n<p>Stay tuned! Spring break is approaching, which means I get to <strike>go party my head off somewhere in Florida<\/strike> lock myself in the shop and not come out until this sucker&#8217;s done!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In another episode of &#8220;Hmm, what is Charles building&#8221;, we have&#8230; Gee, some aluminum rounds and a large section of steel tubing. Hmm, it really makes you wonder, doesn&#8217;t it? I opted to skip the Intro to \u00c3\u00bcber-basic EE that today&#8217;s 6.01 lecture was covering in order to haunt the Central Machine Shop for metal. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,28,1],"tags":[40,19,41],"class_list":["post-152","post","type-post","status-publish","format-standard","hentry","category-project-build-reports","category-razer","category-stuff","tag-electric-scooter","tag-snuffles-reloaded","tag-wheelmotor"],"_links":{"self":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/posts\/152","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=152"}],"version-history":[{"count":0,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/posts\/152\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}