{"id":1091,"date":"2009-12-26T17:18:12","date_gmt":"2009-12-26T17:18:12","guid":{"rendered":""},"modified":"2017-12-04T05:11:02","modified_gmt":"2017-12-04T05:11:02","slug":"drilled-seat-and-baggage-ribs","status":"publish","type":"post","link":"http:\/\/jasonbeaver.com\/rv7\/2009\/12\/26\/drilled-seat-and-baggage-ribs\/","title":{"rendered":"Drilled Seat and Baggage Ribs"},"content":{"rendered":"

I started tonight by match drilling the bottom skin to the seat and baggage ribs as well as the F-704 and F-705 bulkheads. \u00a0Next I got started on the F-623 side ribs. \u00a0There is a joggle in these that makes it look like it could nest inside F-705, but this is apparently a holdover from the RV-6 and must be cut off.<\/p>\n

<\/a><\/center><\/p>\n

The side rib should sit behind F-705 like this. \u00a0They will be connected with a strap that has to be fabricated.<\/p>\n

<\/a><\/center><\/p>\n

The aft end of the side rib must be cut off as well. I positioned a ruler where the front edge of the F-706 bulkhead will sit and marked the rib.<\/p>\n

<\/a><\/center><\/p>\n

After cutting of the ends, I clamped the rib in place and match drilled it to the bottom skin.<\/p>\n

<\/a><\/center><\/p>\n

The plans specify attachment straps that connect F-623 to F-705 that are 3\/4″ wide. \u00a0This is too wide to hit just one row of rivets here, but not wide enough to catch both rows. \u00a0Most builders just narrow the strip to 1\/2″ and catch just the outer row of rivets, but I decided to make the strip a little wider and catch both rows of rivets.<\/p>\n

<\/a><\/center><\/p>\n

The aft attachment straps will have edge distance problems if fabricated according to plans. \u00a0Instead, I made the strap widen somewhat as it exits F-623 so that the aft rivet (on the right in the picture below) will have sufficient edge distance on all sides.<\/p>\n

<\/a><\/center><\/p>\n

I clamped the two side ribs together to transfer the cut marks from one to the other.<\/p>\n

<\/a><\/center><\/p>\n

I clamped the two halves of F-704 together using the spacers I made and some hardware store 7\/16″ bolts. \u00a0I put two of the close tolerance bolts in place (one in each end) to ensure the bulkhead halves were perfectly aligned since the hardware store bolts allowed a little slop.<\/p>\n

<\/a><\/center><\/p>\n

I then clecoed the side skin doublers in place and match drilled them to the F-704 side pieces.<\/p>\n

<\/a><\/center><\/p>\n

Four of the rivets along the front edge of F-704 must be countersunk so that the F-704 flange isn’t dimpled. \u00a0This is to allow the floor stiffeners to nest against this flange.<\/p>\n

<\/a><\/center><\/p>\n

The bottom skins is only 0.025″ thick, which is not thick enough to take a countersink for a 3\/32″ rivet. \u00a0This causes the countersink to penetrate slightly into the F-704 flange. \u00a0This is ok in this particular case.<\/p>\n

<\/a><\/center><\/p>\n

Afterward, I removed the bottom skin and baggage ribs.<\/p>\n

<\/a><\/center><\/p>\n

I pulled out the crotch strap install kit, but I need to get up really<\/b>\u00a0early tomorrow, so I’m going to call it a night.<\/p>\n

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

I started tonight by match drilling the bottom skin to the seat and baggage ribs as well as the F-704 and F-705 bulkheads. \u00a0Next I got started on the F-623 side ribs. \u00a0There is a joggle in these that makes it look like it could nest inside F-705, but this is apparently a holdover from … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1091","post","type-post","status-publish","format-standard","hentry","category-fuselage"],"_links":{"self":[{"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/posts\/1091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/comments?post=1091"}],"version-history":[{"count":2,"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/posts\/1091\/revisions"}],"predecessor-version":[{"id":2781,"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/posts\/1091\/revisions\/2781"}],"wp:attachment":[{"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/media?parent=1091"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/categories?post=1091"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/jasonbeaver.com\/rv7\/wp-json\/wp\/v2\/tags?post=1091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}