{"id":95,"date":"2011-11-29T13:38:12","date_gmt":"2011-11-29T21:38:12","guid":{"rendered":"http:\/\/whiskeybeforebreakfast.wordpress.com\/?p=95"},"modified":"2011-11-29T13:38:12","modified_gmt":"2011-11-29T21:38:12","slug":"more-on-steam-ports","status":"publish","type":"post","link":"https:\/\/ckhollidayplans.com\/blog\/more-on-steam-ports\/","title":{"rendered":"More on steam ports"},"content":{"rendered":"

Last time I posted about using a table from Meyer to determine the steam port area. This can also be done from an equation: fractional steam port area = speed of piston in feet per minute X 0.1\/600.<\/p>\n

To demonstrate this, I updated the steam port worksheet to run the above equation:<\/p>\n

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Although the DLR runs at about 10mph, I decided to calculate at 15mph to give the engine a bit more headroom. At 15mph the required steam port area is 4.583 sq. in. I’ve chose a 7.5″x0.625″ steam port which equals to an area of 4.213 sq. in. (with semi-circular ends). The 7.5″ length was determined from Meyer’s suggestion that the length of the port be no less than 3\/4 X cylinder diameter, so the rest is figuring out the width, which is actually a quadratic equation due to the semi-circular ends.<\/p>\n

At 10mph the actual port area is 3.056 sq. in.<\/p>\n

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So for the chosen steam port size of 7.5″x0.625″ should be able to work for at least 10mph. Let’s see what the exact optimum speed for this sized port will be:<\/p>\n

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Last time I posted about using a table from Meyer to determine the steam port area. This can also be done from an equation: fractional steam port area = speed of piston in feet per minute X 0.1\/600. To demonstrate … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-95","post","type-post","status-publish","format-standard","hentry","category-ck-holliday-build"],"_links":{"self":[{"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/posts\/95","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/comments?post=95"}],"version-history":[{"count":0,"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/posts\/95\/revisions"}],"wp:attachment":[{"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/media?parent=95"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/categories?post=95"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ckhollidayplans.com\/blog\/wp-json\/wp\/v2\/tags?post=95"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}