Chapter 19 - Step 9

In this step you make to two wing ribs.

Outboard wing rib before glassing October 2, 2003. Here is the outboard wing rib after removing 0.7" of foam. I used my Dremel with the router bit and attachment set to 0.7". I them cut a series of grooves in the foam to the correct depth. I then just hacked and sanded the rest of the remaining foam down to the base of these grooves. It's just the edges and corners that take time to get right.

Inboard wing rib before glassing October 2, 2003. Here are a series of shots showing the inboard wing rib prior to glassing. The plans don't make this real obvious. I must have read the description 30 times and looked at various websites. I think this is right.

The foam is completely removed from the forward face and the forward portion of the bottom. The edge is cleared the rest of the way round the rib.

Before glassing this make sure you test fit the controls in place. The clearance I made on the bottom for the CS132 didn't allow for the pushrod. I need to clear more of the bottom foam. Other than that this worked out in the end. I had no trouble fitting the controls later.

Inboard wing rib before glassing October 2, 2003. Another view showing the front and top.

Inboard wing rib before glassing October 2, 2003. Another view showing the bottom and rear.

Inboard wing rib before glassing October 2, 2003. A last shot showing the top and rear.

Inboard wing rib glassed November 11, 2003. The inboard rib after glassing.

Outboard wing rib glassed November 13, 2003. The outboard rib after glassing.