View Single Post
  #3   Spotlight this post!  
Unread 13-01-2008, 22:16
Lawry Goldstein Lawry Goldstein is offline
Registered User
FRC #1525
 
Join Date: Aug 2007
Rookie Year: 2006
Location: Deerfield, IL
Posts: 13
Lawry Goldstein is an unknown quantity at this point
Re: calculating cylinder length from stroke

Quote:
Originally Posted by nighthawk0501 View Post
Let me clarify, our team wanted to use a double acting cyclinder which would translate to style

31 * DXP
Adder per Inch of Stroke .15
Base Length 5.62

So how exactly is the retracted length calculated?
I pulled out my Bimba catalog from last year which I am assuming is going to be the same as this years. From what I can see from the drawings is that when retracted the 31_-DXP with 2 inch bore has a lengh of "5.62 + Stroke" from the rear center hole to the bottem of the mounting threads.

Edit: I orgionally thought that the center hole was half way between the .44 stub, but I looked at the drawing again and I think that the .44 is actually the distance to center which would make more sense. So yeah... The thread is .88 long as far as I can tell.

So I would say its overall 6.72 + stroke for overall length, meaning 30.92" end to end compacted with no mounting hardware. The thickest part is 2.08"

As for weight it is 1.62 + .15 per stroke, so 5.22 pounds.

Hope this helps, if you want I can scan the page and upload it as an image tomarrow if you need. Bimba also has all of this on their site. They can even make Cad/Inventor models dynamicly for you if I remember right.

Last edited by Lawry Goldstein : 13-01-2008 at 22:28. Reason: Misread Drawing