{"id":13,"date":"2012-10-07T16:07:55","date_gmt":"2012-10-07T15:07:55","guid":{"rendered":"http:\/\/www.randomorbit.co.uk\/wordpress\/?p=13"},"modified":"2015-02-21T13:49:36","modified_gmt":"2015-02-21T13:49:36","slug":"random-orbit-2-the-second-coming","status":"publish","type":"post","link":"https:\/\/www.randomorbit.co.uk\/?p=13","title":{"rendered":"Random orbit 2 – The second coming"},"content":{"rendered":"

\"b68814ddfa8520c9ffb976e0af494753\"<\/a><\/strong>It started with an innocent enough conversation along the lines of “You know Andy, most people with a TZR have a bigger duct”… “Do they? (quick look round) Oh yes.”.<\/p>\n

Out with the angle grinder.<\/p>\n

Random Orbit version 1 had a 750mm duct and putting 45bhp through that is a bit of a tall order and so I decided to put a bigger duct on. I’d also heard that some time earlier, someone had put a lift duct on a Cyclone and raced it in F1.<\/p>\n

I decided I’d have a go at putting a 900mm thrust fan and a lift fan on Random Orbit.<\/p>\n

The rules in F3 say that you can run any number of two-stroke engines in any combination up to a maximuim of 250cc but it’s tricky finding a good combination to give lift and thrust so I decided to try a shaft drive.<\/p>\n

[note. I’m writing this in 2008 and shaft drive craft are all over the place but when I did this job in 2001ish they were quite rare]<\/p>\n

A shaft drive means you can get the advantages of twin ducts on a single engined craft but designing one does make things interesting.<\/p>\n

A big note… I didn’t take nearly enough photos and without them it all seems a bit dry so this section is very short.<\/p>\n

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It started with an innocent enough conversation along the lines of “You know Andy, most people with a TZR have a bigger duct”… “Do they? (quick look round) Oh yes.”. Out with the angle grinder. Random Orbit version 1 had a 750mm duct and putting 45bhp through that is a bit of a tall order … Continue reading Random orbit 2 – The second coming<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[29],"tags":[],"class_list":["post-13","post","type-post","status-publish","format-standard","hentry","category-c80-random-orbit-2"],"featured_image_src":null,"author_info":{"display_name":"andy","author_link":"https:\/\/www.randomorbit.co.uk\/?author=1"},"_links":{"self":[{"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/13","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13"}],"version-history":[{"count":1,"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/13\/revisions"}],"predecessor-version":[{"id":711,"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/13\/revisions\/711"}],"wp:attachment":[{"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.randomorbit.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}