View Single Post
  #8   Spotlight this post!  
Unread 02-06-2007, 15:18
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: 573
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
Re: pic: 254/968 Gearbox - Destructive Testing Results

Quote:
Originally Posted by Travis Schuh View Post
Wow! That is one strong tranny.
Were these results close to what you were able to calculate?
More or less. We didn't concentrate too much on these forces, as the gear teeth would strip long before any of the shafts or webs would fail. We spent considerable time calculating bending strengths on the gear teeth to make sure they would be okay.

As such, yes, these were very similar to what we calculated and predicted. Some components had an initial 10X factor of safety in them, but due to the design, the shape and size couldn't be changed much and further weight wouldn’t have been easily removed. Since the components didn't weight much at this point anyway, we didn't feel that a design change was worth while or necessary.
__________________
-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