Yesterday I welded the control horn onto the left elevator, cleaned up the flux residue from brazing and welded the elevator hinge support tubes to front of the rear spar of the left horizontal stabiliser. Then 120 degree arcs cut out of some 7/8" *0.058" tube were welded either side of the hinges on the elevator spar to locate the hinges and set the clearance between the elevator horn and the tip of the horizontal stabiliser. 
Today, I fabricated the ribs for the left horizontal stabiliser (HS) out of the usual 0.019" thick 3/8" rectangular steel channel. These were tack welded onto the stabiliser and then brazed to complete the joints. I had just enough channel left to complete the job and even had to butt weld two short sections together to make the final lower tip rib. Once the horizontal stabiliser was cleaned of flux residue it was time to mount both stabilisers and elevators onto the airframe. I had previously drilled the right HS front mount plate for a range of incidences as recommended in the plans http://tailwindbuild.blogspot.com/2008/08/7th-
august-2008-setting-up-hs-incidence.html. This time it was a case of drilling matching holes on the left side. This was done by bolting the right HS into each hole in turn, ensuring that the two HS leading and trailing edges were exactly aligned with the two elevator horns bolted together and then drilling the left mount plate. The proposed position of the HS for the first test flight is 1 degree of negative incidence. This will then be adjusted to obtain cruising flight with no elevator deflection and zero elevator trim force.After checking that the elevators moved smoothly, without any binding and with the full control range of 30 degrees up and 25 degrees down they were then removed and the airframe returned to the workshop. Next job will be to complete the left fuselage side with stringers, aluminium cheeks and the over-door fill panels.
