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techtalk:ref:tools173 [2020/10/25 23:31] – [What is a manometer?] hippysmacktechtalk:ref:tools173 [2024/01/24 23:12] (current) – hippysmack
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   * [[techtalk:ref:genmsr04#using_diagnosing_with_a_slack_tube_manometer|Using / Diagnosing with a Slack Tube (Manometer)]]   * [[techtalk:ref:genmsr04#using_diagnosing_with_a_slack_tube_manometer|Using / Diagnosing with a Slack Tube (Manometer)]]
   * [[techtalk:ref:engmech04g|Slack Tube Testing on a 1998 1250S Sportster]]   * [[techtalk:ref:engmech04g|Slack Tube Testing on a 1998 1250S Sportster]]
-  * [[techtalk:ref:genmsr04#using_diagnosing_with_a_slack_tube_manometer|Using / Diagnosing with a Slack Tube (Manometer)]]+  * [[techtalk:ref:engmech07p|Testing with a Slack Tube (Manometer) by bustert]]
  
 A manometer is used to measure the pressure difference between two gases, often atmosphere and the gas being tested. ((https://sciencing.com/perform-manometer-test-7644846.html)) \\ A manometer is used to measure the pressure difference between two gases, often atmosphere and the gas being tested. ((https://sciencing.com/perform-manometer-test-7644846.html)) \\
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 ===== What is it used for? ===== ===== What is it used for? =====
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 There are many purposes for a manometer in diagnosing Motorcycle issues; \\ There are many purposes for a manometer in diagnosing Motorcycle issues; \\
   * A manometer has long been a tool to help in synchronizing the vacuum between multi-carb engines. \\ With a Sportster having only the one carb, the meter can still be used to measure how much vacuum is present in the venture.   * A manometer has long been a tool to help in synchronizing the vacuum between multi-carb engines. \\ With a Sportster having only the one carb, the meter can still be used to measure how much vacuum is present in the venture.
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 ===== Where to get one ===== ===== Where to get one =====
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 A simple U-tube manometer can be homemade or bought commercially. \\ A simple U-tube manometer can be homemade or bought commercially. \\
 Dwyer is a popular brand and these can also be purchased used (Ebay) at a lower price. \\ Dwyer is a popular brand and these can also be purchased used (Ebay) at a lower price. \\
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 Many folks strip out the valves and drain the tubes when they are not using them. \\ Many folks strip out the valves and drain the tubes when they are not using them. \\
 The difference in elevation between the two liquid levels is the draft. \\ The difference in elevation between the two liquid levels is the draft. \\
-|This is the Dwyer manometer.((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5767694#post5767694))|Homemade version using a ruler as a scale. ((photo by Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5784790#post5784790))|+|This is the Dwyer manometer.((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/197307-sportster-crankcase-pressure-engine-breathing-wetsumping-and-mods/page31#post4326111))|Homemade version using a ruler as a scale. ((photo by Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/197307-sportster-crankcase-pressure-engine-breathing-wetsumping-and-mods/page52#post4349847))|
 |{{:techtalk:ref:engmech:checking_cc_pressure_at_timing_hole_plug_5_by_bustert.jpg?direct&300|}}| {{:techtalk:ref:engmech:homemade_slack_tube_5_by_hippysmack.jpg?direct&300|}}| |{{:techtalk:ref:engmech:checking_cc_pressure_at_timing_hole_plug_5_by_bustert.jpg?direct&300|}}| {{:techtalk:ref:engmech:homemade_slack_tube_5_by_hippysmack.jpg?direct&300|}}|
  
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 The levels of the fluid in the two vertical columns should be equal at this point, as they are currently exposed to the same pressure. \\ The levels of the fluid in the two vertical columns should be equal at this point, as they are currently exposed to the same pressure. \\
 This level is therefore marked and identified as the zero reference point of the manometer. \\ This level is therefore marked and identified as the zero reference point of the manometer. \\
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 ===== How does it work? ===== ===== How does it work? =====
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 With the U-tube design, one long tube is mounted vertically on a stand, curved at the bottom center which creates two 'legs' vertically positioned. \\ With the U-tube design, one long tube is mounted vertically on a stand, curved at the bottom center which creates two 'legs' vertically positioned. \\
 This leaves both ends open to atmosphere with the air above the water level having equal pressure in both legs. \\ This leaves both ends open to atmosphere with the air above the water level having equal pressure in both legs. \\

Trace: • W E L C O M E !