View Single Post
  #12   Spotlight this post!  
Unread 01-10-2010, 19:28
Travis Covington's Avatar Unsung FIRST Hero
Travis Covington Travis Covington is offline
Engineering Mentor
FRC #0254
Team Role: Engineer
 
Join Date: Oct 2001
Rookie Year: 1998
Location: San Jose, CA
Posts: 574
Travis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond reputeTravis Covington has a reputation beyond repute
Send a message via AIM to Travis Covington
Thumbs up Re: I need some live axil design tips!

Quote:
Originally Posted by Cory View Post
a properly seated 7/16" snap ring can take a 3,000 lbf thrust load, if I remember correctly. The key here is properly seated. As long as you can cut the groove properly, ensure proper axial spacing so the snap ring groove isn't interfered with, and don't re-use snap rings, you shouldn't experience any problems.
This sounds right for ring shear, but if you use a material with a lower yield strength than the retaining ring itself, you will likely see a lower thrust load capacity due to groove yield. With 7075 or something similar, you should still get ~2000 lbf of thrust load capacity. These theoretical calculations assume a perfectly round retaining ring with no seam, so real numbers will vary.
__________________
-Travis Covington

2008-2017 - Engineering Mentor of Team 254
2001-2008 - Engineering Mentor of Team 968
1998-2001 - Mechanical Director/Driver/Member of Team 115
Reply With Quote