View Single Post
  #21   Spotlight this post!  
Unread 15-02-2013, 13:19
billbo911's Avatar
billbo911 billbo911 is offline
I prefer you give a perfect effort.
AKA: That's "Mr. Bill"
FRC #2073 (EagleForce)
Team Role: Mentor
 
Join Date: Mar 2005
Rookie Year: 2005
Location: Elk Grove, Ca.
Posts: 2,383
billbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond repute
Re: 4 Wheel Drive Too Much Traction

Running through the JVN calculator, your current drive train has an overall reduction of 4.67:1. It yields a top speed of 24.13 ft/sec. You need to at least twice that amount of reduction.

My I suggest swapping out the belt drive to chain with the following sprockets.

12 tooth on the transmissions and a 30 tooth on the wheels.

That will increase your reduction to 11.67:1, drop your top speed to 9.65 ft./sec, and give you enough torque to turn.

The sprockets you want are available from both AndyMarh and VexPro.
__________________
CalGames 2009 Autonomous Champion Award winner
Sacramento 2010 Creativity in Design winner, Sacramento 2010 Quarter finalist
2011 Sacramento Finalist, 2011 Madtown Engineering Inspiration Award.
2012 Sacramento Semi-Finals, 2012 Sacramento Innovation in Control Award, 2012 SVR Judges Award.
2012 CalGames Autonomous Challenge Award winner ($$$).
2014 2X Rockwell Automation: Innovation in Control Award (CVR and SAC). Curie Division Gracious Professionalism Award.
2014 Capital City Classic Winner AND Runner Up. Madtown Throwdown: Runner up.
2015 Innovation in Control Award, Sacramento.
2016 Chezy Champs Finalist, 2016 MTTD Finalist

Last edited by billbo911 : 15-02-2013 at 13:42. Reason: Fat fingers. Thanks Ether!