Trunions
 
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Trunnions Bearing surface on both trunions is  3/16" thick, T6 aluminum to provide a smooth and durable contact surface for altitude ball bearings
 

The drive trunion is covered with 00 grit belt sander paper to provide a high non-slip contact surface

Trunnion drive rear
   
Left altitude trunnion and drive Right trunnion
   
Both supporting trunions are covered both sides with Ebony Star laminate to provide a smooth, consistent surface for the caliper style brakes.  The Drive Trunion is also covered with the Ebony Star laminate only for esthetic purposes.  The supporting trunions are fitted with a center pivot point for console and encoder attachment.
     
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