View Single Post
  #12   Spotlight this post!  
Unread 16-03-2010, 19:12
Vince's Avatar
Vince Vince is offline
Registered User
FRC #0236 (Techno Ticks)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1994
Location: Old Lyme, CT
Posts: 178
Vince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond reputeVince has a reputation beyond repute
Re: Ball posession: Roller (ball magnet) or vacuum?

Quote:
Originally Posted by Alex Cormier View Post
How well does that work? We are currently using one window to a pvc roller with 35 teeth on the window and a 12 tooth on the pvc. It is a bit too slow for us to really grab the ball well.
As of right now it is fairly effective but we are still maximizing the effectiveness.
The model that you see in the picture there is a 36:16 reduction from the denso motors with 2.5" diameter Vex wheels. We found that while driving backwards at full speed we cannot hold the ball as well as we desire, so we have changed the ratio to 48:10, to give us about 400 rpm. This may change again before our regional (week 5) but after a bit of testing we will know for sure.