Today I located and welded into place the tabs to support the cockpit floor panels - 79 in total. I established a datum at the bottom of the main fuselage longerons using a piece of 4" * 2" timber and then used a spacer of 11/16" to locate the tabs flush with the tops of the longerons. Then it was a case of welding each one in turn. The vertical tabs under the front of the seat cross member posed more of a problem but a little jig was created to hold them while they were welded. Finally all the tabs were drilled 1/8" ready to fit the flooring. The rear section of the
floor was then match drilled to the tabs at the corners and clecoed in place whilst the rest of the holes were drilled. Then the floor was removed and the holes opened up for the M4 screws and the holes in the tabs opened up to 6mm for installation of the clinchnuts which, as before, were tack welded to remove all possibility of spinning.
Today I located and welded into place the tabs to support the cockpit floor panels - 79 in total. I established a datum at the bottom of the main fuselage longerons using a piece of 4" * 2" timber and then used a spacer of 11/16" to locate the tabs flush with the tops of the longerons. Then it was a case of welding each one in turn. The vertical tabs under the front of the seat cross member posed more of a problem but a little jig was created to hold them while they were welded. Finally all the tabs were drilled 1/8" ready to fit the flooring. The rear section of the 
floor was then match drilled to the tabs at the corners and clecoed in place whilst the rest of the holes were drilled. Then the floor was removed and the holes opened up for the M4 screws and the holes in the tabs opened up to 6mm for installation of the clinchnuts which, as before, were tack welded to remove all possibility of spinning.
