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Old 04-13-2011, 04:36 PM
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mbauer mbauer is offline
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Attaching Nacelles to Fuselage/Wing Assembly

This is the hardest thing you will do on this model! Once it is done, the rest of construction is easy and over in just a few minutes! This step however takes some time, gluing skill and quick hands!

When the actual gluing of the Nacelle to the Fuselage was happening, I could not take any photos. So, text will have to do.

First dry fit the parts. Slide the Nacelle all of the way onto the wing. Press tight to the fuselage. Checking for fit now makes this much easier as it gives you an idea of what the final alignment of the Nacelle to Fuselage & Wing looks like.

Glue tabs giving you any issues? You might have to fold them back and forth once again to loosen them up.

NOTE:
Do not apply any glue to the inside wing tabs yet! Wait until both nacelles have been attached and the glue has set.

Apply glue to all of the tabs that touch the fuselage, this includes the air inlet ones at the front of the nacelle (curved ones).

Be really careful to slide the nacelle onto the wings before touching the fuselage, if you don't, glue will get everywhere!

Now press the nacelles tight to the fuselage, making sure they are snug to the wing and the wing is in the valley in the wing cut out. Make sure the wing and nacelle are tight! Not to tight to crush the wing.

Check for a gap at the front of the nacelle under the air inlet area. Press tight to get rid of it if there is one.

Check that the length has no gaps between fuselage side and nacelle.

Now keep checking all of these areas as you keep holding the parts together while the glue sets.

Keep checking! Check again and again. Don't leave your hands in one position too long, or gaps will form elsewhere.

Make sure there are no gaps under the inlet or at the front part of the nacelle. Gaps here will cause massive drag issues.

After glue sets, run a glue bead (fillet) down the top and bottom sides of nacelle/fuselage connection. Small bead but very important to aerodynamics of model! Set aside to dry.

Allow bead to dry, if you don't, smearing glue is going to happen! Be careful because the model is almost done, this would be a bad time to smear glue!

Now do the other side nacelle the same way. Make sure they both are lined up across from each other and that they aren't to much to the bottom or top sides. The wings usually hold them in the proper position, but sometimes they don't.

After the glue completely sets on both, time to do the wing to Nacelle junction.

Run a small bead of glue under the nacelle on the top of the wing skin. Now press the nacelle down and hold until glue sets. Once again a back and forth check while applying pressure to stop any gaps from happening.

In one of the photos I show using a small bamboo skewer to apply pressure. This works great when mating these two surfaces.

After the glue has set, you need to run another small bead down this junction for aerodynamics too.

Once again allow bead to dry, if you don't, smearing glue is going to happen! Be careful because the model is almost done, this would be a bad time to smear glue!

Roll the engine inlet cones, bend the tabs and get ready to glue them to the front of the nacelle.


Notice that there is an alignment line in front of the nacelles; this is where these small cones line up. Just add glue and press/hold in place.

1st photo shows Nacelle attached to the fuselage. Notice the wing fit at the front. See the nacelle "tails" at the wing trailing edge? These help you pull the nacelle onto the wing tightly!
Stomp Rocket Glider Build Thread-F104-1attaching-nacelle-fuselage.jpg
2nd photo air inlet glue fillet, to stop air from getting under the nacelle.

Stomp Rocket Glider Build Thread-F104-2attaching-nacelle-fuselage2.jpg

3rd photo shows applying the glue fillets to the fuselage/nacelle junction.

Once both sides have been done it is time to glue the Nacelle to the wing. Run a small bead of glue on top of the wing, under the nacelle edge; press the nacelle down to meet the wing.
Stomp Rocket Glider Build Thread-F104-3glue-fillets-along-nacelle.jpg
4th photo shows using a bamboo skewer to apply pressure as the glues sets when attaching the nacelle to the wing skin.
Stomp Rocket Glider Build Thread-F104-4using-bamboo-skewer-apply-pressure.jpg
5th photo close-up showing more detail when using the bamboo skewer to apply pressure, don't use too much force or you could deform the wing skin.
Stomp Rocket Glider Build Thread-F104-5bamboo-skewer-wing-nacelle-view.jpg
6th photo shows rolling the inlet cone.

Stomp Rocket Glider Build Thread-F104-6rolling-engine-inlet-cone.jpg
7th Photo shows the attached Nacelle & Inlet Cone.
Stomp Rocket Glider Build Thread-F104-7inlet-cone-nacelle-done.jpg

Once all glue has dried it is time to trim the nacelle tails even with the trailing edge of the wing. Be careful not to cut into the fuselage or wing.

Next step deals with the final construction of the model.
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