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Participant

Join Date: Jun 2011
Posts: 2

Design of Mechanical System for Unequal Preodic Cycles

06/09/2011 4:39 AM

I want to perform an experiment of a material testing. For the
experiment, I require to move the testing specimen in a solution for 10
minutes and then out of it for next 50 minutes. This should be a
repeated process for 24 hours and 20 days and should be completely
mechanical. No electric input should be required to perform this
experiment. This mechanical assembly can be done using weight fraction,
hour glass, water dropper or any other approach. If anybody comes up
with an assembly which is relatively simpler, he would be of great help
to me. It is requested to make keen efforts. Your efforts would be
appreciated

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Guru
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#1

Re: Design of Mechanical system for unequal preodic cycles

06/09/2011 6:24 AM

Looks like you'd better start taking a 28 day clock apart!

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Guru

Join Date: Apr 2009
Location: USA, Florida
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#2

Re: Design of Mechanical System for Unequal Preodic Cycles

06/09/2011 2:45 PM

You have two options for this homework assignment.

Option 1:

Develop a perpetual motion machine.

Option 2:

Multiply 480 (20 x 24) times the energy required per hour to complete one rotation of a wheel sized to turn while dipping into the tank. The wheel will be at a height above the tank where 16.67% of the time a point on the wheel is submerged. Impart the calculated energy into the wheel either using a spring or weight on a string with pulley.

Hint: You will need to design some bull mesh gearing or a small transmission. If using the string, you may need approximately a mile of it if your gears are sufficiently low. Remember, the wheel needs to turn 1.0 RPH.

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Guru

Join Date: Oct 2008
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#3

Re: Design of Mechanical System for Unequal Preodic Cycles

06/09/2011 3:51 PM

You might have to change the wheel sizes. Well, it's not electric.

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Guru

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#4
In reply to #3

Re: Design of Mechanical System for Unequal Preodic Cycles

06/09/2011 6:25 PM

THAT'S IT !!!!!

Homework done...go have a beer with the home boyz !!

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Power-User
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Join Date: Mar 2011
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#5

Re: Design of Mechanical System for Unequal Preodic Cycles

06/09/2011 10:31 PM

Hang your sample from the minute hand of a mechanical clock, so that it barely dips into a tank. For reduced size, have it fall over an edge and get hauled back out.

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Guru
Engineering Fields - Aerospace Engineering - Member United States - Member - Army Vet in the aviation industry

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#6

Re: Design of Mechanical System for Unequal Preodic Cycles

06/10/2011 7:17 AM

How about studying the works of Heron of Alexandria from the 1st Century AD.

Click Here (be sure to click to page 2)

He did all kinds of neat stuff without electricity as has been an inspiration to me.

Hooker

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