View Single Post
  #22   Spotlight this post!  
Unread 14-01-2014, 07:37
Peter Matteson's Avatar
Peter Matteson Peter Matteson is offline
Ambitious but rubbish!
FRC #0177 (Bobcat Robotics)
Team Role: Engineer
 
Join Date: Sep 2003
Rookie Year: 2003
Location: South Windsor, CT
Posts: 1,653
Peter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond reputePeter Matteson has a reputation beyond repute
Re: Placing a Tank after a solenoid valve

Quote:
Originally Posted by pmangels17 View Post
In 2008 we used a lock and air tanks on the cylinder because the flow rate through the solenoid wasn't fast enough to accelerate the ball quickly. The extra tanks were mounted using brass fitting to allow a larger volume of air to be stored, so that when the piston is released, the air can flow faster into the cylinder, thus moving the piston faster. This gave us more power and a quicker shot. Adding a tank between the valve and cylinder facilitates a more powerful shot.
The flow restriction is still the valve. Your are not getting full working pressure but something signifigantly less that weakens quickly as the air expands. Again going back to my point you are get the force you think you are when you do this, unless you have calculated out the pressure when the volume you trap fully expands.
__________________
2011 Championship Finalists/Archimedes Division Championships w/ 2016 & 781
2010 Championship Winners/Newton Division Champions
Thank-you 294 & 67

2009 Newton Division Champions w/ 1507 & 121
2008 Archimedes Division Champions w/ 1124 & 1024
2007 Championship Winners/Newton Division Champions w/190, 987 & 177 The Wall of Maroon
2006 Galileo Division Champions w/ 1126 & 201
www.bobcatrobotics.org
"If you can't do it with brains, it won't be done with hours." - Clarence "Kelly" Johnson