Spar Attach Bushings 
Sunday, August 2, 2009, 08:55 PM - Wings
Posted by Administrator
Based on design calculations for the strut and root attach fittings, I had two choices - use five 1/4" bolts in bare wood, or use three 1/4" bolts in 1/2" phenolic bushings. Since drilling holes in the spar makes me nervous, I went with the option that required less drilling. The problem was that I did not have 1/2" phenolic rod - only 3/4". A few minutes with a lathe solve that issue, and I am now ready to install the bushings into the spar.



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