Horizontal Stabilizer

February 4, 2002 - February 7, 2002

Deburred edges of all ribs, fluted ribs where necessary. Deburred edges of spars. Cleco'ed ribs to spars, match drilled all #30 holes on ribs and spars. Disassembled and deburred all #30 holes on ribs and spars.

February 11, 2002 - February 13, 2002

Cut HS jig and mounted to bench. I'm going to build a portable H-frame jig and mount the HS jig to it. It will allow easier access down into the skin to reach the nose ribs for riveting. Cleco'ed right skin to ribs and spars. Match drilled all #40 holes.

February 19, 2002 - February 22, 2002

Disassembled right HS, deburred ribs and skin, deburred and machine countersink flanges in front and rear spar. I may have countersunk the flanges a little too much, not down to a knife edge hole but still pretty thin at the bottom. Dimpled ribs and skin.

February 24, 2002 - February 27, 2002

Cleco left HS skin to ribs and spars. Match drilled all #40 holes. Disassembled and deburred all #40 holes. Dimpled all ribs with hand dimpler. Machine countersink flanges in spars. Began dimpling skin.

March 3, 2002

Finished dimpling left HS skin. I had dimpled the holes along the edge on one side of the skin with the hand dimpling tool. I noticed that the hand dimple tool left the skin with a little more distortion than the C-frame dimpler. Because of this, I finished up the remainder of the skin dimpling with the C-frame dimpler. The hand tool works great on the rib flanges but I like the results of the c-frame on the skins a lot better.

The dimple table in action. This makes it very easy to dimple the skins. The carpet protects the skin and the skin is also level with the dimpler. One word of caution, since the male dimple is on the bottom facing up, don't drag the skin across it because the skin will scratch very easily.

March 6, 2002

Machine countersink the required holes in spar doublers and rear spar.