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Unread 07-03-2016, 13:29
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Dan
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Re: Structural Integrity of Competition Defenses?

Quote:
Originally Posted by CJ_Elliott View Post
I remember at Northern Lights the portcullis being sent up so hard that a bar that I didn't even know was there came onto the field.
There is a bar zip tied onto the top bar of the portcullis to weigh it down and offset the strength of the springs.
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