{"id":3102,"date":"2013-01-01T11:50:30","date_gmt":"2013-01-01T19:50:30","guid":{"rendered":"http:\/\/www.corbinstreehouse.com\/blog\/2013\/01\/corbin-v-36\/"},"modified":"2021-04-26T08:18:42","modified_gmt":"2021-04-26T15:18:42","slug":"corbin-v-36","status":"publish","type":"post","link":"https:\/\/www.corbinstreehouse.com\/blog\/2013\/01\/corbin-v-36\/","title":{"rendered":"Corbin V-36"},"content":{"rendered":"<p id=\"top\" \/>I&#8217;m working on a V-Frame 36&#8217;er unicycle, called the &#8220;<b>Corbin V-36<\/b>&#8220;.<\/p>\n<p>It&#8217;s partially an experiment to see how light I can make it, yet still be strong and not flex.<\/p>\n<p>I did a 3d model in Sketchup, and printed it full size. I then machined a jig to hold things in place. Here&#8217;s a video explaining the jig:<\/p>\n<div class=\"videowrapper\"><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/YydoTQspjQA\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe><\/div>\n<p>And some pictures. The jig setup for my my main seat post tube:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9052.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9052-tm.jpg\" width=\"500\" height=\"666\" alt=\"IMG_9052.jpg\"\/><\/a><\/p>\n<p>Experimenting with bending:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9076.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9076-tm.jpg\" width=\"500\" height=\"666\" alt=\"IMG_9076.jpg\"\/><\/a><\/p>\n<p>I&#8217;m using cro-moly tubing, 1\/2&#8243; OD by .049 wall thickness. It is too small of tubing, and the frame flexes when going up hills. I&#8217;m going to use 7\/8&#8243; tubing next, and try to re-enforce this frame.<\/p>\n<p>Working the corners in my jig:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9080.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9080-tm.jpg\" width=\"300\" height=\"400\" alt=\"IMG_9080.jpg\"\/><\/a><\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9081.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9081-tm.jpg\" width=\"300\" height=\"400\" alt=\"IMG_9081.jpg\"\/><\/a><\/p>\n<p>Jig and frame almost setup to weld the front post tube:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9082.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9082-tm.jpg\" width=\"500\" height=\"375\" alt=\"IMG_9082.JPG\"\/><\/a><\/p>\n<p>Clamped together, and brazing started:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9086.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9086-tm.jpg\" width=\"500\" height=\"375\" alt=\"IMG_9086.JPG\"\/><\/a><\/p>\n<p>Popped out of the jig and a test fit:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9087.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9087-tm.jpg\" width=\"500\" height=\"375\" alt=\"IMG_9087.JPG\"\/><\/a><\/p>\n<p>Setting up the main seat post:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9089.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9089-tm.jpg\" width=\"500\" height=\"375\" alt=\"IMG_9089.JPG\"\/><\/a><\/p>\n<p>After it was brazed on:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9090.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9090-tm.jpg\" width=\"500\" height=\"375\" alt=\"IMG_9090.JPG\"\/><\/a><\/p>\n<p>Horizontal support, bent to match the tire diameter, brazed on, and a test handlebar tossed on:<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9092.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2012\/12\/IMG_9092-tm.jpg\" width=\"500\" height=\"666\" alt=\"IMG_9092.jpg\"\/><\/a><\/p>\n<p>The frame flexes *a lot* going uphill. I have to use larger tubing for the seat post to fix that. I brazed on some lower supports to try to prevent flex, but it didn&#8217;t help much. I&#8217;m going to braze on another tube really close to my seat post to try to get this frame to work. Then, if it does, I&#8217;ll make another one with thicker tubing.<\/p>\n<p>Due to heat distortion, I had to ream out both tube holes to get the stuff to go into them.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m working on a V-Frame 36&#8217;er unicycle, called the &#8220;Corbin V-36&#8220;. It&#8217;s partially an experiment to see how light I can make it, yet still be strong and not flex. I did a 3d model&#8230; <a class=\"read-more\" href=\"https:\/\/www.corbinstreehouse.com\/blog\/2013\/01\/corbin-v-36\/\">[read more]<\/a><\/p>\n","protected":false},"author":1,"featured_media":3082,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[24,3],"tags":[108,226,18,227],"class_list":["post-3102","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-machining","category-unicycling","tag-36er","tag-corbin-v-36","tag-unicycle","tag-v-36"],"jetpack_featured_media_url":"https:\/\/www.corbinstreehouse.com\/blog\/wp-content\/uploads\/2012\/12\/IMG_9092.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/posts\/3102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/comments?post=3102"}],"version-history":[{"count":3,"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/posts\/3102\/revisions"}],"predecessor-version":[{"id":6172,"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/posts\/3102\/revisions\/6172"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/media\/3082"}],"wp:attachment":[{"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/media?parent=3102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/categories?post=3102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.corbinstreehouse.com\/blog\/wp-json\/wp\/v2\/tags?post=3102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}