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     1. 04:19 PM - upper bearing (Carlos Sa)
 
 
 
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      Hello, all
      
      
      I am working on the (CH601-HD) firewall, and I am doing some changes based
      on the XL and the 750 firewall.
      
      The addition of the plastic upper bearing is causing me a bit of concern.
      In my case, the bearing interferes with rivets placed through 6F10-2 (the
      original CH601-HD upper bearing) and 6F8-2 (firewall stiffener).
      These parts can be sen on page 11 of this document:
      http://www.zenithair.com/pdf-doc/601-firewall-gear-rib.pdf
      I am using UHDMW (or some such mix of letters) 3/8" thick.
      I cut notches to clear the rivets.
      
      What is bugging me is that I could not find any comments about this
      interference, so maybe I am doing something incredibly wrong (I am not
      content with doing anything just "credibly" wrong).
      My "notched" upper bearing can be seen here:
      http://www.flickr.com/photos/54366879@N06/7359287022/
      These notches might be weakening the part to a point where it will easily
      brake and be ineffective, reason why I am planning on a duplicate (no
      notches) installed on top of it.
      
      Comments, anyone?
      
      
      Carlos
      CH601-HD
      http://www.zenith.aero/photo/img-6037
      
 
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