Direction (clockwise/counterclockwise)?

TSOlympian
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Direction (clockwise/counterclockwise)?

Postby TSOlympian » Fri Dec 11, 2015 7:41 pm

Hey does anyone know if the CD has to rotate in a certain direction like clockwise or counterclockwise?

chalker
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Re: Direction (clockwise/counterclockwise)?

Postby chalker » Sat Dec 12, 2015 12:16 am

TSOlympian wrote:Hey does anyone know if the CD has to rotate in a certain direction like clockwise or counterclockwise?


No, direction doesn't matter

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Fibonacci924
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Re: Direction (clockwise/counterclockwise)?

Postby Fibonacci924 » Mon Jan 18, 2016 4:21 pm

It doesn't matter as long as your blades move.
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Re: Direction (clockwise/counterclockwise)?

Postby sch003 » Sat Feb 20, 2016 5:08 pm

True, but the direction of the blades compared to the direction of blades on the fan will actually affect your speed and output.

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Re: Direction (clockwise/counterclockwise)?

Postby kkssciolync » Sun Feb 28, 2016 8:39 am

Thoughts on clockwise -vs- counterclockwise:

Have your team test a simple (clockwise) paper pinwheel and a simple (counterclockwise) paper pinwheel of exactly the same design against exactly the same fan.
Coach-type questions to ask:
did they work equally well?
which design worked best for the fan (blade direction matched fan direction or reversed?)
was the same position relative to the fan best for each of them?
can you use position to compensate for non-optimal direction?
since you don't know if the competition fan will be clockwise or counterclockwise, what does this tell you?

It's about a 15min exercise, and well worth the time.


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