Currently the most popular project on my http://www.ideas-inspire.com website is
the Syringe Hydraulic Arm. Views to this
project come from all over the world, with the greatest coming from India but
the largest concentration of views are coming from cities in the United States.
My assumption is this must be a school project in many US schools. This is has been a project in the Engineering
Through Models class for the last two years as part of College for Kids at
Winona State University. Whenever I bring my sample for display kids are always
drawn to this project.
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| Syringe Hydraulic at Summerfest 2014 |
In designing the arm I tried to make it as simple as
possible with wood materials that are easily found and needed a minimum of
cutting. I do try making improvements to my projects over time. The latest
addition came about not because of any real problem but because I noticed how
when the wood arm was pushed up first all the force was on a small edge on the
left, then it was pushing fairly flat but then moved to the opposite edge. What
was missing from my design was a pivot point between the plastic syringe
plunger and the wood arm.
My easy fix to this has been to cut a short length of rigid plastic
tubing and hot glue it to the flat surface of the syringe. The wood arm now
moves around the curved surface of the tubing and it appears the operation is
smoother. Ideally I think the better solution
would be to come up with a bearing that has a round shaft pivoting in a tube. I
will have to give this greater thought, if you build the project maybe you will
have a better idea.
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| Rigid Tube Added |
Bill Kuhl
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