View Single Post
  #8   Spotlight this post!  
Unread 27-06-2014, 14:56
DampRobot's Avatar
DampRobot DampRobot is offline
Physics Major
AKA: Roger Romani
FRC #0100 (The Wildhats) and FRC#971 (Spartan Robotics)
Team Role: College Student
 
Join Date: Jan 2012
Rookie Year: 2010
Location: Stanford University
Posts: 1,277
DampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond repute
Re: Gearing for a Very High Speed

Quote:
Originally Posted by JorgeReyes View Post
I am wondering if this would be a good idea. To have a robot that is 2 speed and 6cims. Low for around 7 fps and high would be 18-20 fps. The High might sound uncontrollable but what I was thinking is that we could use a button so that when it is pressed, the motors use 100% power but when it isnt it uses 50%. This would essentially give us 4 speeds with a 2 speed gearbox.
We had adjusted speeds in this range this year, with 2 CIMs and a mini on each side. It was ferocious when accelerating, but ended up tripping the breaker a lot. When we took out the mini CIMs, it wasn't nearly as high performance (to my eye).

With a reasonable talented driver, a good control system, and a bit of practice, you won't need to limit power at all. We used split arcade (faux Chezy Drive), and noticed that the robot was much, much easier to control than with tank. When people think fast drives are uncontrollable, it's usually more a testament to what control system they're using rather than how fast they're going.
__________________
The mind is not a vessel to be filled, but a fire to be lighted.

-Plutarch