Thread: Swerve Concept
View Single Post
  #20   Spotlight this post!  
Unread 30-06-2014, 16:27
Greg Woelki's Avatar
Greg Woelki Greg Woelki is offline
FRC Alumnus
FRC #1768
 
Join Date: May 2014
Rookie Year: 2013
Location: Bolton, MA
Posts: 97
Greg Woelki is a glorious beacon of lightGreg Woelki is a glorious beacon of lightGreg Woelki is a glorious beacon of lightGreg Woelki is a glorious beacon of lightGreg Woelki is a glorious beacon of light
Re: Swerve Concept

Quote:
Originally Posted by AdamHeard View Post
I'm not sure where you're getting your numbers at all.

The two wheels spaced far apart will take substantially more torque to turn, there is no way they will get BETTER performance than current optimized narrow centered wheel swerves.
In this post, OP said a BAG is used for pivoting

I estimated that around 80in*lbs would be needed to turn that two-wheel module. A BAG motor has a stall torque of 3.5in*lbs, so, while more reduction would be better, I went with 100:1 in my calculation. Free speed of a BAG motor is 14000 rpm, so 140rpm with the reduction and 108rpm under the load. That works out to 0.56 seconds per rotation, or a bit over 0.25 seconds for 180 degrees.

So, while it may take more torque to pivot and while one may want to run the motor further on the speed side of its curve, that is where I got my numbers.

Last edited by Greg Woelki : 30-06-2014 at 16:31.