In building my spars on my KR-1, I used a digital level, protractor and a laser level. First, I ran masking tape down the length of the spars (main and outer) and drew a center line on it. Then, using the laser level, I shot a laser line down the spar and on to the fuselage. A piece of masking tape on the fuselage with a line on it in line with the spar line makes for a highly accurate alignment.
On the main spars, it was simply a matter of setting the angle on the digital level and bracing it with an adjustable stand. Then I installed the outer WAF's. The laser level makes a line down the centerline of the spar (pre marked with tape and pencil) and ensures the WAF's align properly. The WAF's were LOOSELY bolted together for setting on the outer spars so I could drill and mount them on the outer spars. The digital level and laser level were anchored to the spar so they didn't move. Worked like a charm. Now, with regards to the rear spars, same procedure EXCEPT for the protractor. A little math confirms the angle (3 degrees) and shooting the laser level down the spar and onto the fuselage provides a place to put another chunk of masking tape and a reference line for the laser level line. As long as the laser line is on the fuselage mark, you're golden. The digital level ensures proper angle of the spar vertically. In both cases, keep the laser line on the reference lines on the spar and fuselage. Also, measure the distance between the spars at the end (outer end) and it should match your outer rib. Finally, if everything is already built and closed, I would first go to the local liquor store, buy a very LARGE bottle of Jack Daniels (preferred Bourbon of us PRCA rodeo cowboys!), pour a healthy drink while looking at the wing. Drink another drink and continue wondering if it fits or not. Finish the bottle, go to bed and start a few days later on rebuilding the outer wings. Sorry, couldn't help myself there. Perhaps someone else has a plan to measure it after the wings are closed. I can only help with before. BTW, I'm using 5046 airfoil on my bird and fixed, tricycle Diehl gear. Contact me off net and I'll try to find where in the bloody computer I have the pictures of my spar building process (above) and I can e-mail them to you. Worked slicker than greased pig snot! Gene Leone, Worland, Wyoming "Michael Moore is a living example to NEVER trust ANYONE who's bigger around than they are tall!" Is there anyway to check the washout when the wings are finished ? Not sure they were set right, If it's wrong is it easier to just start over new spars ribs cover ect.. this is on a KR1 project... _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
