<html><head></head><body><div class="ydpa70692c7yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;" dir="ltr" data-setdir="false"><div><div dir="ltr" data-setdir="false">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.<br></div><div><br></div><div class="ydpa70692c7signature"><div style="font-family:Helvetica, Arial, sans-serif;font-size:16px;"><div dir="ltr" style="font-family:Helvetica, Arial, sans-serif;font-size:16px;">-Joe Dunfee<br></div><div dir="ltr" style="font-family:Helvetica, Arial, sans-serif;font-size:16px;"> 717-203-8670 Cell<br></div></div></div></div>
<div><br></div><span>On Tuesday, August 6, 2024 at 11:22:40 AM EDT, Jon Ares via Stagecraft <stagecraft@theatrical.net> wrote:</span></div><div class="ydpa70692c7yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;" dir="ltr" data-setdir="false"><span> </span><br clear="none">...One question to you and anyone else (Greg B?) that has used spring<br clear="none">retract cylinders... is there any excess noise with their spring<br clear="none">return? A loud thwomp?<br clear="none"><br clear="none"> - Jon</div><div id="ydpa0a12fe4yahoo_quoted_3654147161" class="ydpa0a12fe4yahoo_quoted"><div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
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