View Single Post
  #19   Spotlight this post!  
Unread 29-04-2014, 20:07
asid61's Avatar
asid61 asid61 is offline
Registered User
AKA: Anand Rajamani
FRC #1072 (Harker Robotics)
Team Role: Mentor
 
Join Date: Jan 2014
Rookie Year: 2013
Location: Cupertino, CA
Posts: 2,234
asid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond repute
Re: Butterfly/ octocanum drives

Quote:
Originally Posted by Madison View Post
Our octocanum modules are 5.75 lbs. each. The pneumatic cylinders driving each pod were mounted to the frame and I don't have the weight of each of those handy. We used four, but you could as easily use 1, 2 or 4 as your frame allowed.

Our first octocanum implementation in 2011, itself the first used in FRC, was made entirely in-house and with no advanced machining techniques. It was designed and built in just a few weeks and while heavy, it was very reliable and effective.

Our 2014 implementation is made with sheet metal and that helped us to realize a lot of weight savings. We relied on our experience from 2011 to design and code the drive quickly.
Wow, that's super light! Even with cylinders, I can't see that popping up to more than 7lbs.
We have a sheet metal guy, but CNC is up in the air right now (our local college can only machine on weekends and they like the manuals).