View Single Post
  #7   Spotlight this post!  
Unread 20-05-2015, 14:32
Chris is me's Avatar
Chris is me Chris is me is offline
no bag, vex only, final destination
AKA: Pinecone
FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks)
Team Role: Mentor
 
Join Date: Dec 2008
Rookie Year: 2006
Location: Glastonbury, CT
Posts: 7,601
Chris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond repute
Send a message via AIM to Chris is me
Re: Construction with gussets and bolts

Quote:
Originally Posted by Joseph Smith View Post
We haven't had many major issues with rivets- mostly just loosening over time in certain areas and needing replacement occasionally. I think didn't use the right rivets this last season though- we primarily used these when in the past we normally used something like this.

If you end up using rivets again, for critical areas like a drive chassis, where you don't expect to ever be removing the rivets, high strength aluminum rivets stay very firm over time and are just as light as regular rivets. They aren't that difficult to remove if you have to - you just need to center punch the rivet hole as the mandrel tends to break flush with the top of the rivet, rather than slightly inside the rivet.

The other benefit of these pricier high strength rivets is that they are rated to work in holes going all the way up to .201". That way, you can cut holes to .196" or so and use a tight #10 bolt clearance hole that doubles as a rivet hole.

The extra cost of these rivets isn't insignificant though - http://www.mcmaster.com/#aluminum-rivets/=x9kpy0
__________________
Mentor / Drive Coach: 228 (2016-?)
...2016 Waterbury SFs (with 3314, 3719), RIDE #2 Seed / Winners (with 1058, 6153), Carver QFs (with 503, 359, 4607)
Mentor / Consultant Person: 2170 (2017-?)
---
College Mentor: 2791 (2010-2015)
...2015 TVR Motorola Quality, FLR GM Industrial Design
...2014 FLR Motorola Quality / SFs (with 341, 4930)
...2013 BAE Motorola Quality, WPI Regional #1 Seed / Delphi Excellence in Engineering / Finalists (with 20, 3182)
...2012 BAE Imagery / Finalists (with 1519, 885), CT Xerox Creativity / SFs (with 2168, 118)
Student: 1714 (2009) - 2009 Minnesota 10,000 Lakes Regional Winners (with 2826, 2470)
2791 Build Season Photo Gallery - Look here for mechanism photos My Robotics Blog (Updated April 11 2014)