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Quick Build F-22 Raptor

Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

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Page 1: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

Quick Build F-22 Raptor

Page 2: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

This kit is very simple to put together. The biggest danger in messing up this kit is gluingthe pieces to your work bench. But before you begin, take a couple of minutes to readover this entire construction guide as well as the parts in your kit. It’s just a 3D puzzlewith all interlocking pieces. Total construction time is about 2 hours and then you cantake as much time on your finishing as you want.

Glue: We recommend using 5 minute epoxy for gluing in the carbon fiber wing spar andUHU Creativ glue for foam for just about every other joint. But you can use 5 minuteepoxy on the entire plane and it really won’t make a big difference. For a real quickbuild, you could even use hot glue on everything but the carbon spar, but we think that isnot a great option. One more thing: we recommend you dry build you entire plane usingsome tape to hold everything together. It lets you see how things fit and lets you plan outyour build. Plus, if you are planning on doing any painting, IT MIGHT BE EASIER TOPAINT IT BEFORE YOU PUT IT TOGETHER.

Last but not least, we want to thank Tomas Hellberg for giving us permission to kit thisawesome design. Now onto the build!

1. The carbon spar. The carbon spar isimportant because it gives your plane theneeded strength on the wings towithstand all the forces of nature. Sotake your time on this. Also, this stephas a good chance you could glue thewing to your workbench. Don’t do this.It won’t improve the aerodynamics ofyour workbench. Use some wax paper,or some extra tape or just be careful.Get your wing out, your 5 minute epoxy,some masking tape and your carbon rod.NOTE: This picture is a differentwing, but the process is the same.

Next, figure out which side of the wingwill be the top side. Mask over the slot

in your wing using masking tape orpainters tape as shown. NOTE: Youmight have to extend the slot a bit with asharp hobby knife.

Then flip the wing over, mask on eitherside of the slot to prevent excess epoxyfrom getting all over your wing.

Page 3: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

Now, mix up a good amount of epoxyand stir well. The key with epoxy is toreally get it mixed well. So mix it likecrazy. We recommend using a small cupmade of paper or something so you canbend the lip to make like a little spout,but any container will do.

Next, and this is important, make sureyour rod is NOT in the slot. The pictureabove shows it in the slot but we werejust test fitting the rod. Then pour in theepoxy the length of the slot and even itout within the slot. Insert rod and mashdown hard. Wipe away any excessepoxy that oozes out. It helps if youhave a good piece of card board orsomething to use as a squeegee.

Now remember about gluing your wingto the table? Now is a good time tocheck if your tape on the bottom blew ahole in it and leaked epoxy all over theplace. If so, wipe it up and make sureyou don’t glue the wing down. Can youtell we have glued our wing down a timeor two? Okay, don’t wait too long, like5 minutes and remove your tape. That ispretty much the hardest part, and you aredone!

2. Front fuselage assembly. Next, werecommend using epoxy for this steptoo, it makes the rest of the assembly goa little quicker if you have a nice rigidjoint here. Mix up a bit of epoxy andspread on one side of the joint and pushit together. Make sure here not to glueto the table again. Really, this happens alot. NOTE: Below is what yourairplane should look like.

Page 4: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

3. Next, let’s get the canopy and forwardlower fuse pieces and connect them. Weused UHU Creativ for foam glue for allother joints from this point forwardunless noted.

Make sure you attach the canopy (bigpiece) to the top of your wing (asdiscussed the first steps). Attach thelower and upper piece through the slots.

4. Bottom Fuse. To prepare to mountthe bottom fuse piece, first locate thelittle piece that bridges the gap betweenthe wing and the bottom fuse. Glue intoplace as pictured. You may want to useepoxy on this small piece, since themotor mount attaches to it. Next, attachthe bottom fuse piece. It will not beattached well, as it sort of floats, butmake sure it is centered and on straight.Doing this first, makes it easier to attachthe intake pieces later.

5. Engine Intakes. Find the two piecesthat make up the engine intakes.

Now because this is an F-22, andbecause all the cuts on your kit are atright angles, this part takes a bit ofpatience, and a little trim work on yourpart. No big deal. You will need a sharphobby knife or razor blade. Sharp beingthe key word. If you insert the intakespieces into the tabs, you will notice a

Page 5: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

considerable gap between the edges ofthe intake pieces and the bottom fusepiece you just attached. This is becausethe intake pieces angle inward to meetup. In order to allow the pieces to tiltinward, you may have to trim out theslots in the main body/wing of themodel. We just trimmed the corner onboth sides of the wing to allow the tabsto better tilt inside the slot. See Picturebelow. This step can take a bit of time,but just take it slow and dry fit each sideusing some masking tape or pins. Thenglue up each side, making sure you gluethe intakes sides to both the body/wingand the bottom fuse piece. This is wherea contact cement like UHU Creativcomes in handy.

If you flip your plane over, you willnotice the tabs extend through the top ofthe slots slightly. Trim or sand asdesired. You can fill in any gaps with

some light weight spackle if you want toimprove the appearance of the aircraft.

6. Front Intakes: This step is very similarto the side intakes, requiring you to trima bit to make them angle correctly.

7. Vertical Tails. The F-22 also hasangled vertical tails that roughly followthe same angle as the side fuselagepieces you mounted in step 5.

Page 6: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

Insert the tail piece into the slots on thetop of your model and again, trim a bit toallow some free movement or just workthe foam a bit to achieve an outwardangle, matching the angle of the intakes.Glue into place. You may want to useepoxy here as well. It is important to getthe tails at the same angle, though if theyare a little off, it won’t matter much. Sodon’t panic.

9. Hatch construction. This is the partthat might take some creativity on yourpart. The hatch piece can be attachedabout a million different ways. Velcro,magnets, and good old fashioned ducttape just to name a few. But you willneed to use some scrap pieces of foam(included) to let the hatch stay in place.See below. NOTE: Picture is not of yourplane, but the process is the same.

10. Motor Mount. In you kit you shouldhave a ply piece and a little foam diskthat match up. Go ahead and laminatethem together with some epoxy. Then,mount it to the motor area using epoxy.

11. Taileron Prep. You will need toattach your tailerons next. First you willneed to bevel the edge so the hingeworks properly. See pictures. Usinghinge tape (not provided) or some 3Mscotch tape, attach the ailerons to thebody. You may need to sand thesepieces a bit to make sure they do not rubon each other in the middle.

Page 7: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

Here (below) you can see the beveledgap in the taileron to allow for freemovement positioned on the bottom ofthe plane.

Servo and control horn mounting. Thisis all about preference. You can mountyour servos pretty much wherever, butwe prefer under the wing and right overthe CF rod. This gets all the wires insidethe box on the plane and makes it easy.

Study the pictures below. NOTE:Again, different plane, same process.

12. Connect up your electronics and paint as desired.

Page 8: Quick Build F-22 - Causemann Flugmodellbau · sharp hobby knife. Then flip the wing over, mask on either side of the slot to prevent excess epoxy from getting all over your wing

Note on finishing. We coated our entire airplane with some Minwax water basedpolyeurathane. It came in a spray can. We did about 2 coats and it worked great. Thenwe just used regular spray paint and some masking tape to finish it off. The Minwaxprotected the foam from the foam eating regular spray paint. It was like a force field in aspray can. The bottom line here is test out your paint on some spare foam or only usefoam safe paint. It will melt your airplane if you are not careful.

Center of Gravity Location is 3.25” rear of the wing break (wing break is shown below)