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Old 05-19-2008, 01:41 AM #1
callmepat
 
 
Join Date: Aug 2007
How does the trap door work?

Alright, I see that air pressure pushes the trap door closed but what opens it back up again? I'm pretty sure it doesn't use a spring. Is it suction from the escaping air?
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Old 05-25-2008, 09:16 PM #2
washington (Banned)
 
Join Date: Feb 2008
Location: Arlington WA
http://www.zdspb.com/tech/misc/animations.html
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