{"id":1150,"date":"2012-09-07T20:19:23","date_gmt":"2012-09-08T02:19:23","guid":{"rendered":"http:\/\/www.velocity-xl.com\/blog\/?p=1150"},"modified":"2013-01-27T20:32:06","modified_gmt":"2013-01-28T02:32:06","slug":"12-3-4-cooling-plenum-intakes","status":"publish","type":"post","link":"https:\/\/www.velocity-xl.com\/blog\/2012\/09\/07\/12-3-4-cooling-plenum-intakes\/","title":{"rendered":"12.3.4 Cooling Plenum Intakes"},"content":{"rendered":"<div class=\"pps-series-post-details pps-series-post-details-variant-classic pps-series-post-details-4068\" data-series-id=\"36\"><div class=\"pps-series-meta-content\"><div class=\"pps-series-meta-text\">This entry is part 26 of 50 in the series <a href=\"https:\/\/www.velocity-xl.com\/blog\/series\/12-engine-propeller\/\">12 - Engine \/ Propeller<\/a><\/div><\/div><\/div><p>Now that the plenum is (mostly) complete, I need to get the cooling air into the plenum. In the normal installation, this is accomplished with NACA duct extensions.<\/p>\n<p><a href=\"https:\/\/www.velocity-xl.com\/blog\/wp-content\/uploads\/2013\/01\/2012-08-26-IMG_20120826_095900.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"2012-08-26 IMG_20120826_095900\" src=\"https:\/\/www.velocity-xl.com\/blog\/wp-content\/uploads\/2013\/01\/2012-08-26-IMG_20120826_095900-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p>I could use these extensions, but they would restrict access to the area between the engine and the firewall. So I decided (big surprise) to go a more traditional route. I created a pair of extensions that would permanently attach to the inside of the cowling. To build these I started with some foam that use formed to the desired dimensions. Then I covered them with a release agent (duct tape). Placed the forms on the inside of the cowling and covered them with a few layers of BID and a layer of Triax.<\/p>\n<p>When they had cured, I trimmed them and created a lap joint where they would meet the rear of the NACA duct. Then I trimmed the forward wall of the plenum.<\/p>\n<p><a href=\"https:\/\/www.velocity-xl.com\/blog\/wp-content\/uploads\/2013\/01\/2012-09-07-IMG_20120907_152840.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-thumbnail wp-image-1152\" title=\"2012-09-07 IMG_20120907_152840\" src=\"https:\/\/www.velocity-xl.com\/blog\/wp-content\/uploads\/2013\/01\/2012-09-07-IMG_20120907_152840-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p>When it&#8217;s time, they will be bonded to the inside of the cowling.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"pps-series-post-details pps-series-post-details-variant-classic pps-series-post-details-4068 pps-series-meta-excerpt\" data-series-id=\"36\"><div class=\"pps-series-meta-content\"><div class=\"pps-series-meta-text\">This entry is part 26 of 50 in the series <a href=\"https:\/\/www.velocity-xl.com\/blog\/series\/12-engine-propeller\/\">12 - Engine \/ Propeller<\/a><\/div><\/div><\/div><p>Now that the plenum is (mostly) complete, I need to get the cooling air into the plenum. In the normal installation, this is accomplished with NACA duct extensions. I could use these extensions, but they would restrict access to the &hellip; <a href=\"https:\/\/www.velocity-xl.com\/blog\/2012\/09\/07\/12-3-4-cooling-plenum-intakes\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_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":[44],"tags":[],"series":[36],"class_list":["post-1150","post","type-post","status-publish","format-standard","hentry","category-44","series-12-engine-propeller"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/posts\/1150","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/comments?post=1150"}],"version-history":[{"count":2,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/posts\/1150\/revisions"}],"predecessor-version":[{"id":1154,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/posts\/1150\/revisions\/1154"}],"wp:attachment":[{"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/media?parent=1150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/categories?post=1150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/tags?post=1150"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/series?post=1150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}