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Test 2 of the Popsicle Crane Boom.

The crane boom.

Last night I tested the crane boom and the video has been published. The boom did a great job. The cables did not. I used paracord for the most stressed cables and it turns out that paracord is very elastic and I was not able to maintain the angle of the boom throughout the test. This actually put the boom under more stress than what I had intended to do.

I am dead tired tonight, but I wanted to get this video out. I will add more to this post tomorrow.


UPDATE:  I did a web search for “parachute cord” and ended up on a wikipedia site about parachute cord. To quote directly from the article.

The braided sheath has a high number of interwoven strands for its size, giving it a relatively smooth texture. The all-nylon construction makes paracord fairly elastic; depending on the application this can be either an asset or a liability.

It was a liability in this application.    When I analyze this in more detail I will be looking at the relationship of elongation of the cables holding the boom will affect the angle of boom.   I will be making a trip tomorrow to a hardware store and will be looking at some steel cable to use for this.

The purpose of testing is to learn…. learn I did.


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