[SML] Air bladder system for pushing down casters....

[Joe]

For a spring return on an air cylinder, the air that is released to permit the cylinder to retract is normally slow enough that it doesn't thwomp.  Just the air hose and control valve restrictions are enough to prevent it. And if desired, it could be slowed down further with a needle valve.  Similarly, how fast it extends can be controlled as well, and this is a common thing to do.

-Joe Dunfee
 717-203-8670 Cell
 
On Tuesday, August 6, 2024 at 11:22:40 AM EDT, Jon Ares via Stagecraft <stagecraft at theatrical.net> wrote: 
...One question to you and anyone else (Greg B?) that has used spring
retract cylinders... is there any excess noise with their spring
return?  A loud thwomp?

 - Jon  
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