View Single Post
  #3   Spotlight this post!  
Unread 04-12-2010, 20:55
Ether's Avatar
Ether Ether is offline
systems engineer (retired)
no team
 
Join Date: Nov 2009
Rookie Year: 1969
Location: US
Posts: 8,124
Ether has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond repute
Re: First Robotics Books

Quote:
Originally Posted by EricH View Post
The Big CIMs were before you were involved, I think--I remember them in '06 and maybe '07. Many teams noticed that they didn't have the same or better performance as the CIMs that we use these days, which we also had then. They were also about the third-heaviest item in the KOP, weighing in right behind the batteries and the compressor. Hence, a lot of teams didn't use them.

The teams that did tended to use them outside of the drivetrain.
OK, I can understand not using the large CIMs because of their larger size and weight, but that was not the reason given.

According to the motor curves I have, the large CIMs seem to be more efficient (power out divided by power in) than the small CIMs. Perhaps I have the wrong curves? Or perhaps it wasn't a question of efficiency but rather the higher power output of the small CIMs ?

Is there someone from Team 75 that remembers this analysis and could fill in some details?




Reply With Quote