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Unread 16-05-2011, 15:08
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Peter Matteson Peter Matteson is offline
Ambitious but rubbish!
FRC #0177 (Bobcat Robotics)
Team Role: Engineer
 
Join Date: Sep 2003
Rookie Year: 2003
Location: South Windsor, CT
Posts: 1,653
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Re: Mecanum Einstein this year

Quote:
Originally Posted by JesseK View Post
I think the next trick to figuring out how complex drive trains should be is clarifying which of the D/T's on Einstein (or Top25) were:
  • KOP (with perhaps sprocket gearing changes or different wheels, but all else the same)
  • 1 or 2-speed
  • Full-traction versus omni's on the corners
  • Direct-Driven
  • 4/6 motor
  • etc

Speeds in high gear may be interesting to see, but really those are more about what a team's strategy is rather than 'best drive train'. I suspect we'd see a wide variety of skid steer designs in the top ranks.
177 used the latest revision on our 6wd that has gone through a lot of optimization over the last 6 years.

The stats:
4 CIMs
6x 4" AM performance wheels with roughtop tread.
AM shifter "guts" repackaged/repurposed and final ratios modified.
2 wheels are direct drive
~14 fps high gear
~5 fps low gear
Everything is packaged into a 2.5"x2.5" extrusion.

This year we used low gear so rarely that that our driver ocasionally forgot to shift when he got in a pushing match.
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2011 Championship Finalists/Archimedes Division Championships w/ 2016 & 781
2010 Championship Winners/Newton Division Champions
Thank-you 294 & 67

2009 Newton Division Champions w/ 1507 & 121
2008 Archimedes Division Champions w/ 1124 & 1024
2007 Championship Winners/Newton Division Champions w/190, 987 & 177 The Wall of Maroon
2006 Galileo Division Champions w/ 1126 & 201
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