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Unread 15-10-2010, 08:46
Brandon Holley's Avatar
Brandon Holley Brandon Holley is offline
Chase perfection. Catch excellence.
AKA: Let's bring CD back to the way it used to be
FRC #0125 (NU-TRONs, Team #11 Alumni (GO MORT))
Team Role: Engineer
 
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Re: pic: How 125 is rolling this year...

Quote:
Originally Posted by Bruceb View Post
What is your final chopped glass to resin ratio? Are you still using 1/2 inch pieces of glass or have you gone shorter?
Bruce
Our pieces of glass are between 3/8" and 1/2". Right now to measure the amount of fiber we place in the mold, we place the chopped fibers in a cup and gently tap the cup on a table to flatten the fibers out a little bit. We use the same style cup to measure out the urethane needed for the wheel. We then use a 1:1 ratio of urethane to "tapped down" fiber by volume. Our wheels typically needed about 80 mL to fill the wheel safely, so obviously for the 80 mL of urethane, we needed around 80 mL of tapped down chopped fiber.

The amount of fiber we use is something we still want to play around with. I feel with the geometry tweaks we plan on making that we can reduce the amount of fiber necessary.

-Brando
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MORT (Team 11) '01-'05 :
-2005 New Jersey Regional Chairman's Award Winners
-2013 MORT Hall of Fame Inductee

NUTRONs (Team 125) '05-???
2007 Boston Regional Winners
2008 & 2009 Boston Regional Driving Tomorrow's Technology Award
2010 Boston Regional Creativity Award
2011 Bayou Regional Finalists, Innovation in Control Award, Boston Regional Finalists, Industrial Design Award
2012 New York City Regional Winners, Boston Regional Finalists, IRI Mentor of the Year
2013 Orlando Regional Finalists, Industrial Design Award, Boston Regional Winners, Pine Tree Regional Finalists
2014 Rhode Island District Winners, Excellence in Engineering Award, Northeastern University District Winners, Industrial Design Award, Pine Tree District Chairman's Award, Pine Tree District Winners
2015 South Florida Regional Chairman's Award, NU District Winners, NEDCMP Industrial Design Award, Hopper Division Finalists, Hopper/Newton Gracious Professionalism Award
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