Dg400 rigging tips

2G had a good comment about marking the spar (to aid with dihedral alignment). After you have successfully assembled the wing and the pins are in place, take a black "Sharpie" pen and scribe a line against the back fuselage to indicate proper rear spar dihedral alignment (right wing), then scribe a line along the intersection of the front and rear spars (on the face of the rear spar) to show proper dihedral alignment of the front spar (left wing) relative to the rear spar. After practice, you will get 98% alignment by just visual cues, then the pap smear technique will get you that last 2%.

My DG-300 sometimes gave me problems early on. What I learned is that the spoiler automatic hook-up can be not properly engaged in the first (right) wing. If that's the case, the spoiler's automatic hookup fitting on the fuselage is not properly aligned to receive the left wing. It will block the wing from coming all the way in.

My procedure is: after getting the right wing seated, I move the spoiler handle while pushing in on the fuselage's left hand spoiler fitting. This allows me to feel when it engages the right hand wing. I can actually open and close the right wing's spoiler when it's engaged all the way.

Larry
FP