{"id":1164,"date":"2012-12-31T11:07:37","date_gmt":"2012-12-31T17:07:37","guid":{"rendered":"http:\/\/www.velocity-xl.com\/blog\/?p=1164"},"modified":"2013-12-23T13:14:35","modified_gmt":"2013-12-23T19:14:35","slug":"12-3-4-naca-duct-extensions","status":"publish","type":"post","link":"https:\/\/www.velocity-xl.com\/blog\/2012\/12\/31\/12-3-4-naca-duct-extensions\/","title":{"rendered":"12.3.4 NACA duct extensions"},"content":{"rendered":"
This entry is part 38 of 50 in the series 12 - Engine \/ Propeller<\/a><\/div><\/div><\/div>

Prior to mounting the NACA duct extensions to the inside of the cowling, I placed the extensions in position between the NACA’s and the plenum. Then I installed the upper cowling and marked where the flanges of the extensions would be. I also drilled three holes through the cowling into the extension flanges. Then I removed the cowling and painted the inside of the cowl where the extensions would be along with the extensions.<\/p>\n

Once the paint (actually, primer) was dry, I sanded the mating surface of the cowl and the flanges of the extensions. Then I applied structural adhesive to the flanges and mounted taped them to the NACA’s. The upper cowling was then mounted and cleco’s were used to hold the extensions to the cowling.<\/p>\n

Once the adhesive had cured, I cleaned the inside of the extended duct and applied a radius of epoxy.<\/p>\n

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Finally, I used flush head pop-rivets and 1″ square titanium tabs as a mechanical fastener.<\/p>\n

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Looking back down the right NACA.<\/p>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

This entry is part 38 of 50 in the series 12 - Engine \/ Propeller<\/a><\/div><\/div><\/div>

Prior to mounting the NACA duct extensions to the inside of the cowling, I placed the extensions in position between the NACA’s and the plenum. Then I installed the upper cowling and marked where the flanges of the extensions would … Continue reading →<\/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-1164","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\/1164","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=1164"}],"version-history":[{"count":2,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/posts\/1164\/revisions"}],"predecessor-version":[{"id":1554,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/posts\/1164\/revisions\/1554"}],"wp:attachment":[{"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/media?parent=1164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/categories?post=1164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/tags?post=1164"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.velocity-xl.com\/blog\/wp-json\/wp\/v2\/series?post=1164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}