{"id":530,"date":"2019-05-22T18:03:19","date_gmt":"2019-05-22T22:03:19","guid":{"rendered":"http:\/\/www.timorley.com\/blog\/?p=530"},"modified":"2019-06-03T20:21:49","modified_gmt":"2019-06-04T00:21:49","slug":"saturn-1b-1156-to-engine-mount-or-not-to-engine-mount","status":"publish","type":"post","link":"https:\/\/www.timorley.com\/blog\/modelrocketbuilding\/saturn1b156\/saturn-1b-1156-to-engine-mount-or-not-to-engine-mount\/","title":{"rendered":"Saturn 1B 1:156 Part 3"},"content":{"rendered":"\n

To Engine Mount or Not to Engine Mount? That is the question.<\/p>\n\n\n\n

I have a dilemma. An 18mm BT-20 engine mount will not fit in the space left from the BT-4 tank tubes. I was planning on cutting out an 1\/8 of an inch down the length of each BT-4 to accommodate the engine mount. However, the diameter remaining as it is happens to be exactly, the interior diameter of the BT-20, this means an 18mm rocket motor fits. So, I could use the BT-4s as the engine mount. I can still glue an engine block in, it would only have 8 touch pints for glue, versus the entire circumference, however, I plan on using epoxy to fill triangular gaps to prevent ejection gases from flowing backwards, so that will further strengthen the engine block attachment. I am capping of the BT-4 ends with a BT-60 to BT-20 centering ring for the same reason. I can also still have an engine retaining hook, by placing it inside one of the BT-4s , it would still be pushed through a slit in the BT-4 at the engine block. It would further be secured with a piece of BT-4 pushed up inside the BT-4 tube and glued to keep the retaining hook in place. All the BT-4s would be glued together as well. I am sure this will work, it just feels odd to not have a traditional engine mount.<\/p>\n\n\n\n

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To Engine Mount or Not to Engine Mount? That is the question. I have a dilemma. An 18mm BT-20 engine mount will not fit in the space left from the BT-4 tank tubes. I was planning on cutting out an 1\/8 of an inch down the length of each BT-4 Continue Reading<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-530","post","type-post","status-publish","format-standard","hentry","category-saturn1b156"],"_links":{"self":[{"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/posts\/530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/comments?post=530"}],"version-history":[{"count":6,"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/posts\/530\/revisions"}],"predecessor-version":[{"id":647,"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/posts\/530\/revisions\/647"}],"wp:attachment":[{"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/media?parent=530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/categories?post=530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.timorley.com\/blog\/wp-json\/wp\/v2\/tags?post=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}