View Single Post
  #56   Spotlight this post!  
Unread 05-05-2010, 13:59
artdutra04's Avatar
artdutra04 artdutra04 is offline
VEX Robotics Engineer
AKA: Arthur Dutra IV; NERD #18
FRC #0148 (Robowranglers)
Team Role: Engineer
 
Join Date: Mar 2005
Rookie Year: 2002
Location: Greenville, TX
Posts: 3,078
artdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond reputeartdutra04 has a reputation beyond repute
Re: pic: Rastogi 8wd Iteration 1.2

Quote:
Originally Posted by 548swimmer View Post
6061 T6 is crazy strong, and really expensive. Depending on where/how you guys machine you might look at a 50XX series alloy with a lower temper (T).
It sounds like you've confused 6061 with either 2024/7075/7068. These are all much better than 6061 or 5052 in regards to hardness and yield strength. But like 6061, they need large bend radii and are thus unusable for many sheet metal components (which you are correct in that they're traditionally 5052).

If you have good suppliers and know where to look, small quantities (such as for personal project or a FRC team) of 6061 aluminum stock can be bought for as little as $1.50/lb. I bought a 15 pound bar of 6061 last year for about $25. I've also found 3/8" Hex bar made out of 2011 aluminum (easy to machine grade) for about $0.50/ft, which our team then promptly bought all 60 feet they had in stock for custom standoffs for the next few seasons.
__________________
Art Dutra IV
Robotics Engineer, VEX Robotics, Inc., a subsidiary of Innovation First International (IFI)
Robowranglers Team 148 | GUS Robotics Team 228 (Alumni) | Rho Beta Epsilon (Alumni) | @arthurdutra

世上无难事,只怕有心人.
Reply With Quote