Bill Rusk
BENEFACTOR
Sandpoint, Idaho
Next we will rivet on the nose ribs
The flat side of the rib goes toward the hinge side and the NOSE ribs all face in toward the hinge. There are 4 holes on each side of the hinge. The nose ribs use the holes closest to the hinge and the tail ribs use the outside set. The nose ribs on either side of the hinge face in to the hinge, and the tail ribs will face away from the hinge. You can bend the rib out a little to give room for the squeezer. Try not to bend them too much. We will use 470A3-5 rivets on the horn and 3-3 for the others. Rivet two nose ribs on at each hinge. 6 total. We will do the others later.
In your pile of nose ribs you will find two that have a hole in them. These will go (one each) on the flaps where the bell crank/pushrod is located. The rib with the hole goes on the inboard side. The hole is to give room to get the bolt in the pushrod connection. If you have any doubt what I am talking about you can reference the Piper Drawings.
You will have to bend the nose ribs in to get the squeezer in for the tail ribs. After the tail ribs are on we can straighten the nose ribs.
Four of the tail ribs will have an "A" on them. These are notched so they will fit in the where the control horn is. You will have the same situation for the flap control horn.
All the other tail ribs are symmetrical so they can simply be flipped over to make them face left or right as needed.
This is what it will look like. Riveted in with 3-5 rivets. The other tail ribs will be riveted in using 3-3 except the ends which we will get to next. So.....rivet in the 6 tail ribs next to the hinges, remember these face out.
Tail ribs at the hinge. So now you should have the 6 nose ribs at the hinges, and the 6 tail ribs at the hinges.
So now lets rivet on the tail ribs except the end ones. The ribs face the wing root except for the ones next to the hinges which face out from the hinge and the end ribs (don't put them on yet) which will face in. If you are not sure which way the ribs go study all the pictures and it will become clear.
All of the end ribs, both flap and aileron, will look like this. Tail facing in and nose rib facing out. These will be 3-4 rivets. It is easier to buck these rivets but they can be squeezed if you have to. Do the end - nose and tail - ribs now.
The flat side of the rib goes toward the hinge side and the NOSE ribs all face in toward the hinge. There are 4 holes on each side of the hinge. The nose ribs use the holes closest to the hinge and the tail ribs use the outside set. The nose ribs on either side of the hinge face in to the hinge, and the tail ribs will face away from the hinge. You can bend the rib out a little to give room for the squeezer. Try not to bend them too much. We will use 470A3-5 rivets on the horn and 3-3 for the others. Rivet two nose ribs on at each hinge. 6 total. We will do the others later.
In your pile of nose ribs you will find two that have a hole in them. These will go (one each) on the flaps where the bell crank/pushrod is located. The rib with the hole goes on the inboard side. The hole is to give room to get the bolt in the pushrod connection. If you have any doubt what I am talking about you can reference the Piper Drawings.
You will have to bend the nose ribs in to get the squeezer in for the tail ribs. After the tail ribs are on we can straighten the nose ribs.
Four of the tail ribs will have an "A" on them. These are notched so they will fit in the where the control horn is. You will have the same situation for the flap control horn.
All the other tail ribs are symmetrical so they can simply be flipped over to make them face left or right as needed.
This is what it will look like. Riveted in with 3-5 rivets. The other tail ribs will be riveted in using 3-3 except the ends which we will get to next. So.....rivet in the 6 tail ribs next to the hinges, remember these face out.
Tail ribs at the hinge. So now you should have the 6 nose ribs at the hinges, and the 6 tail ribs at the hinges.
So now lets rivet on the tail ribs except the end ones. The ribs face the wing root except for the ones next to the hinges which face out from the hinge and the end ribs (don't put them on yet) which will face in. If you are not sure which way the ribs go study all the pictures and it will become clear.
All of the end ribs, both flap and aileron, will look like this. Tail facing in and nose rib facing out. These will be 3-4 rivets. It is easier to buck these rivets but they can be squeezed if you have to. Do the end - nose and tail - ribs now.
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