What is this object on an ultralight?












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This is a tool (probably) in on an ultralight airplane. Initially I guessed that it is a tilting meter (to level between right and left), but seems it is not as it just a vertical tube filled up with something like liquid.



So, what is that and how does it work?



enter image description here










share|improve this question











$endgroup$

















    22












    $begingroup$


    This is a tool (probably) in on an ultralight airplane. Initially I guessed that it is a tilting meter (to level between right and left), but seems it is not as it just a vertical tube filled up with something like liquid.



    So, what is that and how does it work?



    enter image description here










    share|improve this question











    $endgroup$















      22












      22








      22





      $begingroup$


      This is a tool (probably) in on an ultralight airplane. Initially I guessed that it is a tilting meter (to level between right and left), but seems it is not as it just a vertical tube filled up with something like liquid.



      So, what is that and how does it work?



      enter image description here










      share|improve this question











      $endgroup$




      This is a tool (probably) in on an ultralight airplane. Initially I guessed that it is a tilting meter (to level between right and left), but seems it is not as it just a vertical tube filled up with something like liquid.



      So, what is that and how does it work?



      enter image description here







      aircraft-design flight-instruments ultralight






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      share|improve this question













      share|improve this question




      share|improve this question








      edited 22 hours ago









      Notts90

      2,09231638




      2,09231638










      asked yesterday









      AirCraft LoverAirCraft Lover

      611215




      611215






















          3 Answers
          3






          active

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          33












          $begingroup$

          It's an airspeed indicator for ultralights. The pitot inlet is at the bottom and the pitot air pushes a little red plastic disc up and down on a central rod, with a calibrated clearance between the edge of the disc and the walls of the tube. They are very sensitive and are good down to 10 MPH or less. You'll also see them on hang gliders.



          See here:
          https://www.aircraftspruce.com/catalog/inpages/hallwindmeter.php?clickkey=5468






          share|improve this answer











          $endgroup$





















            10












            $begingroup$

            I don't see an ASI in the panel. I am unable to confirm this guess, but it could be an airspeed indicator (ASI). Google Dwyer Wind Speed Indicator. The Dwyer is plastic, wider at the bottom, and works by having the wind push a ball up a tube that gets progressively wider near the top. As the airflow pushes the ball up, more air can leak around the ball. Where the ball reaches equilibrium indicates the speed.



            Edit: @John K beat me to it! Thanks, John!






            share|improve this answer









            $endgroup$













            • $begingroup$
              The Dwyer is plastic, wider at the bottom, Isn't it wider at the top?
              $endgroup$
              – Johnny
              7 hours ago



















            4












            $begingroup$

            It's indeed an airspeed indicator. Here's one at Oshkosh 2018, with me blowing about 27 knots into it.ASI on ultralightblowing into intake






            share|improve this answer









            $endgroup$













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              3 Answers
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              3 Answers
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              33












              $begingroup$

              It's an airspeed indicator for ultralights. The pitot inlet is at the bottom and the pitot air pushes a little red plastic disc up and down on a central rod, with a calibrated clearance between the edge of the disc and the walls of the tube. They are very sensitive and are good down to 10 MPH or less. You'll also see them on hang gliders.



              See here:
              https://www.aircraftspruce.com/catalog/inpages/hallwindmeter.php?clickkey=5468






              share|improve this answer











              $endgroup$


















                33












                $begingroup$

                It's an airspeed indicator for ultralights. The pitot inlet is at the bottom and the pitot air pushes a little red plastic disc up and down on a central rod, with a calibrated clearance between the edge of the disc and the walls of the tube. They are very sensitive and are good down to 10 MPH or less. You'll also see them on hang gliders.



                See here:
                https://www.aircraftspruce.com/catalog/inpages/hallwindmeter.php?clickkey=5468






                share|improve this answer











                $endgroup$
















                  33












                  33








                  33





                  $begingroup$

                  It's an airspeed indicator for ultralights. The pitot inlet is at the bottom and the pitot air pushes a little red plastic disc up and down on a central rod, with a calibrated clearance between the edge of the disc and the walls of the tube. They are very sensitive and are good down to 10 MPH or less. You'll also see them on hang gliders.



                  See here:
                  https://www.aircraftspruce.com/catalog/inpages/hallwindmeter.php?clickkey=5468






                  share|improve this answer











                  $endgroup$



                  It's an airspeed indicator for ultralights. The pitot inlet is at the bottom and the pitot air pushes a little red plastic disc up and down on a central rod, with a calibrated clearance between the edge of the disc and the walls of the tube. They are very sensitive and are good down to 10 MPH or less. You'll also see them on hang gliders.



                  See here:
                  https://www.aircraftspruce.com/catalog/inpages/hallwindmeter.php?clickkey=5468







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited yesterday

























                  answered yesterday









                  John KJohn K

                  17.6k12252




                  17.6k12252























                      10












                      $begingroup$

                      I don't see an ASI in the panel. I am unable to confirm this guess, but it could be an airspeed indicator (ASI). Google Dwyer Wind Speed Indicator. The Dwyer is plastic, wider at the bottom, and works by having the wind push a ball up a tube that gets progressively wider near the top. As the airflow pushes the ball up, more air can leak around the ball. Where the ball reaches equilibrium indicates the speed.



                      Edit: @John K beat me to it! Thanks, John!






                      share|improve this answer









                      $endgroup$













                      • $begingroup$
                        The Dwyer is plastic, wider at the bottom, Isn't it wider at the top?
                        $endgroup$
                        – Johnny
                        7 hours ago
















                      10












                      $begingroup$

                      I don't see an ASI in the panel. I am unable to confirm this guess, but it could be an airspeed indicator (ASI). Google Dwyer Wind Speed Indicator. The Dwyer is plastic, wider at the bottom, and works by having the wind push a ball up a tube that gets progressively wider near the top. As the airflow pushes the ball up, more air can leak around the ball. Where the ball reaches equilibrium indicates the speed.



                      Edit: @John K beat me to it! Thanks, John!






                      share|improve this answer









                      $endgroup$













                      • $begingroup$
                        The Dwyer is plastic, wider at the bottom, Isn't it wider at the top?
                        $endgroup$
                        – Johnny
                        7 hours ago














                      10












                      10








                      10





                      $begingroup$

                      I don't see an ASI in the panel. I am unable to confirm this guess, but it could be an airspeed indicator (ASI). Google Dwyer Wind Speed Indicator. The Dwyer is plastic, wider at the bottom, and works by having the wind push a ball up a tube that gets progressively wider near the top. As the airflow pushes the ball up, more air can leak around the ball. Where the ball reaches equilibrium indicates the speed.



                      Edit: @John K beat me to it! Thanks, John!






                      share|improve this answer









                      $endgroup$



                      I don't see an ASI in the panel. I am unable to confirm this guess, but it could be an airspeed indicator (ASI). Google Dwyer Wind Speed Indicator. The Dwyer is plastic, wider at the bottom, and works by having the wind push a ball up a tube that gets progressively wider near the top. As the airflow pushes the ball up, more air can leak around the ball. Where the ball reaches equilibrium indicates the speed.



                      Edit: @John K beat me to it! Thanks, John!







                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered yesterday









                      Skip MillerSkip Miller

                      9,0432046




                      9,0432046












                      • $begingroup$
                        The Dwyer is plastic, wider at the bottom, Isn't it wider at the top?
                        $endgroup$
                        – Johnny
                        7 hours ago


















                      • $begingroup$
                        The Dwyer is plastic, wider at the bottom, Isn't it wider at the top?
                        $endgroup$
                        – Johnny
                        7 hours ago
















                      $begingroup$
                      The Dwyer is plastic, wider at the bottom, Isn't it wider at the top?
                      $endgroup$
                      – Johnny
                      7 hours ago




                      $begingroup$
                      The Dwyer is plastic, wider at the bottom, Isn't it wider at the top?
                      $endgroup$
                      – Johnny
                      7 hours ago











                      4












                      $begingroup$

                      It's indeed an airspeed indicator. Here's one at Oshkosh 2018, with me blowing about 27 knots into it.ASI on ultralightblowing into intake






                      share|improve this answer









                      $endgroup$


















                        4












                        $begingroup$

                        It's indeed an airspeed indicator. Here's one at Oshkosh 2018, with me blowing about 27 knots into it.ASI on ultralightblowing into intake






                        share|improve this answer









                        $endgroup$
















                          4












                          4








                          4





                          $begingroup$

                          It's indeed an airspeed indicator. Here's one at Oshkosh 2018, with me blowing about 27 knots into it.ASI on ultralightblowing into intake






                          share|improve this answer









                          $endgroup$



                          It's indeed an airspeed indicator. Here's one at Oshkosh 2018, with me blowing about 27 knots into it.ASI on ultralightblowing into intake







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered 8 hours ago









                          Camille GoudeseuneCamille Goudeseune

                          1736




                          1736






























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