{"id":1259,"date":"1999-11-30T00:00:00","date_gmt":"1999-11-30T05:00:00","guid":{"rendered":"https:\/\/setsail.com\/?p=1259"},"modified":"2015-10-16T12:10:45","modified_gmt":"2015-10-16T17:10:45","slug":"oversize-prop-undersized-performance","status":"publish","type":"post","link":"https:\/\/setsail.com\/oversize-prop-undersized-performance\/","title":{"rendered":"Oversize Prop-Undersized Performance"},"content":{"rendered":"<div class=\"question\">\n<p class=\"Body\"> I replaced my fixed prop ( 3-blade 16 RH 10) with a 17 RH 10 Flex-O-Fold 2-blade folding prop. I have experienced much improved speed under sail and not bad performance in reverse. However, I am unable to get full cruising RPM in forward and because of this am not able to motor cruise at much more than 4.3 knots. My vessel is a Nautilus 37 with a 35 hp Yanmar diesel. Also I am experiencing vibration at 1900 RPM which I did not have with my fixed prop. Any suggestions? Ron<\/p>\n<\/div>\n<p><!--more--><\/p>\n<div class=\"answer\">\n<p class=\"Body\">Hi Ron: The first step would be to go back to the prop supplier and have some dialog. Sounds like you&#8217;ve got a bit too much blade diameter or pitch. This could be the result of improperly reading the reduction gear data- i.e., if the reduction gear has less of a reduction ratio, the prop would be spinning faster, which would cause the problem you&#8217;re encountering. Good Luck&#8211;Steve<\/p>\n<p class=\"Body\" align=\"center\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>I replaced my fixed prop ( 3-blade 16 RH 10) with a 17 RH 10 Flex-O-Fold 2-blade folding prop. I <a class=\"read-more\" href=\"https:\/\/setsail.com\/oversize-prop-undersized-performance\/\">&#8230;Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,15],"tags":[],"class_list":["post-1259","post","type-post","status-publish","format-standard","hentry","category-tech-talk","category-yacht-propellor-faqs"],"_links":{"self":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1259"}],"collection":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/comments?post=1259"}],"version-history":[{"count":1,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1259\/revisions"}],"predecessor-version":[{"id":36271,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1259\/revisions\/36271"}],"wp:attachment":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/media?parent=1259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/categories?post=1259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/tags?post=1259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}