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  #1  
Old 01-18-2017, 04:18 PM
KJP KJP is offline
 
Join Date: May 2016
Location: Western NC
Posts: 22
Default Empennage "H" Jig Questions

Hi Folks,

I'm preparing to commence building my H-jig for the empennage using some 5.5" X 5.5" laminated posts and have some questions:

Is 5.5" too wide for the horizontal beam, i.e., would the extra width create problems?

Van's jig sketch recommends 98"-100" for the span of the horizontal beam...my lumber would yield a shorter length (between the upright posts) of about 95"; Would this create a problem?

Thanks,
KJP
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  #2  
Old 01-19-2017, 08:12 AM
rph142's Avatar
rph142 rph142 is offline
 
Join Date: Feb 2007
Location: Walnut Creek CA
Posts: 473
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The width of the vertical posts doesn't really matter. What you need to be concerned about is the gap between the emp tip ribs and the vertical posts. There are several rivets in the tip ribs that must be set with a hand squeezer and if the posts are too close youll have issues.
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