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Rudder

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Last updated: 3/9/07
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I've inserted a 3/4" dowel round in the trailing edge to hold it open. This is why I did not rivet the last couple holes in the top and bottom rib. I then scuffed up the area of the skin that will contact the wedge and then cleaned everything with MEK. 8/16/06
This is the Fuel Tank Sealant I used to glue the trailing edge wedge in place. I purchased the 3.5 oz. tube and ended up wasting probably 3 oz. of it. Do your self a favor and order the 1 oz. tube and save the money. 8/16/06
I didnt get any pictures of applying the sealant but it wasnt that bad. I just dabbed a spot between each hole and then used my gloved finger to smear the sealant all over the wedge. Once the wedge was completely covered I placed the wedge on the lower skin. I then pulled the dowel rod out and let the top skin lay down on to the wedge. Next I used my hands and squeezed the skins together. Once it looked nice and tight I clecoed the angle to the skins. Each cleco was dunked in Boelube before being used to keep the sealant from sticking to them. Now I will let this cure for a few days. 8/16/06
After sitting a few days the sealant had fully cured so I removed the angle and placed a cleco in every hole. I then followed the direction on riveting the trailing edge. I partially set one rivet in the middle and partially set one on each end. I then set one in between those and so on until every rivet was partially set. I then hand bucked each rivet in the same manner until every rivet was set. 8/19/06
Here you can see the final result. This is the bucked side of the trailing edge. You can compare the lower rivet to see the difference between a factory head in a dimple and a bucked head in a dimple. These turned out very nice. 8/19/06
Now I've got to finish riveting the top R-903 and bottom R-904 ribs. First I taped up everything. 8/25/06
Next I grinded the sharp point off of a cold chisel and duct taped it to a back plate. Make sure you leave room for it to pivot. I placed a pencil under the rear before I taped it and then just pulled the pencil out. 8/25/06
I slid the skin in until the chisel hit the rib and then pulled it back just a bit to keep it from touching and scratching the rib. Then I cranked my pressure up just a little bit and started to rivet. 8/25/06
I used the LP4-3 pull rivets to rivet the R-405PD rudder horn to the R-710 horn brace. These rivets will not be seen once the lower fiberglass rudder tip is installed. 8/25/06
I used a 1" wood dowel to roll the leading edges. I placed duct tape on the skin and rolled the dowel rod until it came in contact with the spar. I used a quick grip to hold the dowel down to the table. I then flipped the rudder over and repeated it on the other side. 8/25/06
Here I'm rolling the next section. 8/25/06
You can see the 1" dowel rod leaves a nice round bend. 8/25/06
The other side was rolled and here both sides are clecoed together. 8/25/06
Here you can see the shape. 8/25/06
Before I rolled the leading edges I used my vice grip edge roller on the overlapping skin. Here you can see how nice the edge is after its rolled. 8/25/06
A close up of the overlapping edge. 8/25/06
Now I'm rolling the lower edges. The larger quick grip was very nice. The smaller one had to be repositioned several times. 8/25/06
Both edges are now rolled. You can see how far a part these edges are after there rolled. I used duct tape to pull the edges together. 8/25/06
Here the lower edges are clecoed. I then match drilled each hole, removed all clecos, deburred the holes and then reclecoed the edges back together. 8/25/06
AD-41-ABS pull rivets where used to attach the edges permanently. 8/25/06
Rudder is done for now. I'll work on the fiberglass tips later. 8/25/06

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This web site and the information contained within it are for entertainment purposes only. The opinions expressed on construction techniques are my opinions only and should not be confused with proper construction techniques. Visit Van's Aircraft for more information.