View Single Post
  #22   Spotlight this post!  
Unread 04-08-2010, 13:09
JamesCH95's Avatar
JamesCH95 JamesCH95 is offline
Hardcore Dork
AKA: JCH
FRC #0095 (The Grasshoppers)
Team Role: Engineer
 
Join Date: Dec 2004
Rookie Year: 2001
Location: Enfield, NH
Posts: 1,885
JamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond repute
Re: Drive train questions

Quote:
Originally Posted by Ether View Post
A (perhaps obvious) caveat: if you mean the above literally, it only works if the pistons are powered in the retract direction (and the load force acts to extend the pistons).

If you are powering the pistons in the extend direction and you just attach two pistons together, they will buckle unless there is some sort of supporting structure at the point of attachment.
If the pistons are joined shaft-to-shaft with a rigid coupler (like I described) one should probably check the design design using critical buckling load calculations, especially if the pistons are of a long stroke and small bore. Fortunately the actuation pressure can be reduced to help prevent the assembly from reaching its critical buckling load.
__________________
Theory is a nice place, I'd like to go there one day, I hear everything works there.

Maturity is knowing you were an idiot, common sense is trying to not be an idiot, wisdom is knowing that you will still be an idiot.
Reply With Quote