{"id":84,"date":"2018-08-10T13:46:26","date_gmt":"2018-08-10T13:46:26","guid":{"rendered":"http:\/\/commons.princeton.edu\/63-tiger-cub\/?p=84"},"modified":"2019-04-01T20:36:07","modified_gmt":"2019-04-01T20:36:07","slug":"20-february-2018","status":"publish","type":"post","link":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/2018\/08\/10\/20-february-2018\/","title":{"rendered":"20 February 2018"},"content":{"rendered":"<div class=\"picture-component\">\n<div class=\"body\">\n<p dir=\"ltr\">February 20, 2018<\/p>\n<p dir=\"ltr\">Notes by Noelle Goudy<\/p>\n<p dir=\"ltr\">Assignment due Thursday, February 22:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">\u201c<a href=\"http:\/\/commons.princeton.edu\/63-tiger-cub\/wp-content\/uploads\/sites\/81\/2018\/08\/combustion-chemistry.pdf\">combustion-chemistry.pdf<\/a>\u201d<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">\u201c<a href=\"http:\/\/commons.princeton.edu\/63-tiger-cub\/wp-content\/uploads\/sites\/81\/2018\/08\/Tiger-Cub-Engine-Calculations-revised.pdf\">Tiger-Cub-Engine-Calculations-revised.pdf<\/a>\u201d<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">This week:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Starting to study the science part of the book<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Seeing how fast the motorcycle can run<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Looking at data sheets and octane ratings<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Thursday: learning about combustion<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Next week: learning about aerodynamics and drag on Tuesday<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Housekeeping:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Emily: With Jordan, cleaned up and polished the engine covers using a sandblaster, sandpaper, and a die grinder<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">A die grinder uses compressed air to make a fan blow with very high speed (and low torque) &#8211; great for polishing<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Noelle: With Alex, disassembled the Amal carburetor and found and labeled all parts for it<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">David: Cleaned the pieces of the transmission with Alex<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Jake: Made a tool to compress the shocks; took the shocks apart and cleaned them<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Brendan: Had to bore a hole to take apart the shocks; sandblasted them<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Connor: General disassembly; removed oil pump; missing ball bearing for the oil pump<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Note to quartermasters: make sure to order new ball bearing<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Eric: With Hannah, sandblasted different parts of the wheel; going to assemble motorcycle stands today in shop<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Alex: With Noelle, worked on disassembling the carburetor and cataloged parts; began to clean the carburetor<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Alex: Finishing disassembling bottom half of engine; took of main sprocket<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Grace: Worked with Connor and Alex to disassemble the engine; will check to make sure everything is working; will go through the gasket packet to figure out if replacements are needed<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Jordan: Worked on polishing with the polishing wheel and by hand<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Sarah: With Ricky tested connections with a voltmeter and with a light; today, will generate sparks with old motorcycle<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Julianne: Continued to clean top end parts; need a piston and rings<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Ricky: With Sarah, checked electrical connections<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Charlie: Sandblasted the two top end pieces<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Hannah is not here<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Discussion of Chapters 9 and 10:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Chapter 9:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Motorcycle References<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Engine misfire:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Spark fires but no fuel is ignited<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Misfire can cause a bang or backfire<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Happens if the unexploded gas goes into the exhaust line<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Content<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Scientific Method<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Helpful to diagnose complicated problems<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Ends up driving Phaedrus crazy<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Six elements:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Statement of problem<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Hypotheses<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Experiments for each hypothesis<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Predicted results of the experiment<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Observed results<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Conclusions<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Hypotheses sometimes sound dumb but are important because assumptions shouldn\u2019t be made<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">132: Experiment only fails if it cannot provide data either way<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Inductive vs. Deductive reasoning<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Inductive: making a hypothesis out of data<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Deductive reasoning: inferring what is happening based on observations<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Underlying Form<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Classic vs. Romantic approach<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Chapter 10:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Content<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Characterizing Phaedrus: how did he lose his mind? Comparing Phaedrus and Einstein<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Both study science for the stake of science &#8211; to learn &#8211; pursuit of knowledge<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Page 111: The difference between experience and nature<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Does nature provide the data?<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Phaedrus is more interested in inquiry<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">The philosopher\u2019s approach<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Where knowledge comes from<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Phaedrus thinks that there are infinite hypotheses and thus thinks that they can never be solved<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Exponential growth of data and information but not of knowledge<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Top Speed of the Motorcycle: 62 mph<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">K&#8217;Nex model of a Model T engine: Four stroke cycle<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">2:1 gear ratio<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Crack turns the connecting rod, which makes the pistons move up and down<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">The spark plug goes off when the piston is at the top<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">As the piston move up, the exhaust is blown out<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Intake valve opens when the piston is at the bottom: air and fuel mixture enters<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">RPM: revolutions per minute of the crank<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">What is the maximum RPM of our motorcycle?<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">\u201cTriumph-10001.pdf\u201d &#8211; workshop instruction manual<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">We have the T20 model<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Technical data is located at the bottom of the manual:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">63 mm bore (diameter of piston)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">64 mm stroke<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Power output: 10 (brake) horsepower at 6000 RPM<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">6000 rpm = 100 revolutions per second<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Gear ratios<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Engine sprocket: 19 (teeth)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Clutch sprocket: 48 (teeth)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Gearbox sprocket: 17 (teeth)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Rear wheel sprocket: 46 (teeth)<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Clutch is going at 2375 RPM<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Crack to clutch: 19\/46 * 6000 = 2375 RPM<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Rear wheel is going at 877 RPM (in the fourth gear)<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Clutch to rear wheel in top gear: 17\/46 * 2375 = 877 RPM = 14.6 revolutions per second<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">14.6 revolutions per second * 6.28 ft = 91.7 feet per second<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">91.7\/66 = 1.04 * 60 mph = 62 mph<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">48\/19 * 46\/17 = 6.84 (which was given as the top gear ratio)<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Ratio of how fast the crank is turning to how fast the wheel is turning<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Gear ratios increase as the gear goes down<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Tiger Cub Bible<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Page 173: Gearboxes for all of the Tiger Cub motorcycles<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">Standard, wide, close, extra-close, and ultra-close gearboxes<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\">We have the standard model<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<div class=\"clear\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>February 20, 2018 Notes by Noelle Goudy Assignment due Thursday, February 22: \u201ccombustion-chemistry.pdf\u201d \u201cTiger-Cub-Engine-Calculations-revised.pdf\u201d This week: Starting to study the science part of the book Seeing how fast the motorcycle can run Looking at data sheets and octane ratings Thursday: learning about combustion Next week: learning about aerodynamics and drag on Tuesday Housekeeping: Emily: With &hellip; <a href=\"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/2018\/08\/10\/20-february-2018\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;20 February 2018&#8221;<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-84","post","type-post","status-publish","format-standard","hentry","category-diary"],"_links":{"self":[{"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/posts\/84","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/comments?post=84"}],"version-history":[{"count":3,"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/posts\/84\/revisions"}],"predecessor-version":[{"id":89,"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/posts\/84\/revisions\/89"}],"wp:attachment":[{"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/media?parent=84"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/categories?post=84"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commons.princeton.edu\/63-2-tiger-cub\/wp-json\/wp\/v2\/tags?post=84"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}