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Problem with BB gearbox spacer
When we attached our two BB gearboxes to CIM motors, one made a loud skreeching noise.
Upon examination it turned out that the black metal spacer that goes between the CIM motor and the pinion gear was ~ 1mm too long. A quick trip to the bench grinder fixed the problem, and the gearbox runs smoothly now.
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Jerry Skene, mentor OOO OOO 2010 - Chairman's Award- DC OOOOOOOOOOOOOOOOOOOOOOOOOOO
Chantilly Academy, Team 612 - 2009 - Engineering Inspiration Award; Finalist - New Jersey
-----------------------------------2008 - Chairman's Award; Kleiner Perkins Award -Buckeye ---| ---Team Spirit Award - NASA/VCU
-----------------------------------2007 - Chairman's Award - NASA/VCU ---| ---Finalist; Kleiner Perkins Award - Chesapeake
-----------------------------------2006 - Chairman's Award - Chesapeake ---| --- Engineering Inspiration Award - NASA/VCU --
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Woo for speculation! - Eugenia Gabrielov [more] 
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