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new design: Strega 45

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new design: Strega 45

Old 05-24-2008, 06:03 AM
  #301  
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Default RE: new design: Strega 45

Today I have started cutting out the elevator. The balsa for the hinges will be cnc cut out balsa. For the controlhorns I will make a reinforcement to glue in from hard balsa also cnc cut in a long triangle shape.
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Old 05-24-2008, 10:13 AM
  #302  
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Default RE: new design: Strega 45

When glueing the balsa for the rudder hinges in the fuse use Sellotape on the outside to protect the fuse for glue spots.
The balsa is glued with UHU plus. Use masking tapen to press all together, do not use clamps.
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Old 05-24-2008, 10:31 AM
  #303  
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Default RE: new design: Strega 45

When mounting the stab in the fuse slide the stab sideways in the fuse. Sand if necessary. Use measure tools to see if the stab is 90 degrees with the vertical fin. With the final glueing we will check the stab with the wing mounted. Now you can see if the stab is in the right position without glueing. On the last picture you can see the stab is 90 degrees but has to move 1mm to the left.
Mark the side where to sand see picture 004a. Several times you wil have to fit and sand where necessary till the stab is 90 degrees with the vertical fin. Later we will measure of all is OK from the top. First mount the wing 90 degrees on the fuse and when OK measure the distances between LE wing and LE stab.
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Old 05-24-2008, 10:48 AM
  #304  
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Default RE: new design: Strega 45

The elevator:
Draw the sizes for the elevator on the stab with a pencil, use the 1:1 size printed stab.
Watch the middle part that stays in the fuse. That part is longer than the hinge line of the elevator.
Start with cutting the both ends of the elevator with a fine saw. Then cut with a sharp knife the elvator out.
When the stab fitting is alright we can cut the elevator and glue the balsa for the hinges. The balsa parts are cnc cut with cutted sleeves for the hinges. Glue the two parts with Elmers white or Titebond II. Remove all dust and tape the balsa with masking tape.
The hinges will be glued later with ZAP hinge glue. Remove some wood for the middle part of the hinge to get a very small gap.
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Old 05-24-2008, 10:57 AM
  #305  
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Default RE: new design: Strega 45

Monday the wing will be mounted on the fuse. Sunday we will enjoy the turbine jetmeeting !!!!!!!!!!!!!!!
I hope to see a lot of very fast jets.
Old 05-27-2008, 09:20 AM
  #306  
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Default RE: new design: Strega 45

We have seen a lof of fast Jets !! It was a great day with sometimes rain.
I am mounting the wing and thinking how to make the spar for the wingrods.
The balsa on the elevator are glued. Now I have to draw the triangle plywood for reinforcement for the controlhorn.
Old 05-28-2008, 01:35 PM
  #307  
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Default RE: new design: Strega 45

The 6mm carbon wingrods are cut and the wing has been carefully drilled (foam). The wingrodformer has the cnc holes and has been glued earlier to the wing. So tape the fuse on the wing front, mark the wingrods and use the cnc drillguide to drill the holeas for the wingrods. Later the wingrods will be glued in the wing. Now I will have to draw a wingrodspar for in the fuse.
The next model I will first glue in the fuse the wingrod spar and then the firewall.
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Old 05-30-2008, 02:16 AM
  #308  
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Default RE: new design: Strega 45

The wing is taped very tight to the fuse on the front and on the back. In the fuse a cut out is made for a tunnel. For the tunnel I will use thin plywood to prevent dirt will come in the fuse. Now I can use the hole for my wingrod tool. I have made two fuselage formers for the carbon wingrods. The formers are 3mm plywood. The formers are put over the carbon wingrods and are glued to the bottem of the fuse with UHU plus. On the back I will use a former in the cowl to keep down the wing and the belly pan. The best is one thick bolt or when that is not possible I have to mount two smaller bolts on the sides. I will fit all in a few minutes. Some pictures:
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Old 05-30-2008, 02:25 AM
  #309  
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Default RE: new design: Strega 45

The parts are coming together as a real plane !! For me it is important that all fits well with a shiny well done paint job and good building instructions. Now it is easy to glue in the stab. But first the stabspar. The most work has been done now, I have to do several small jobs but every part takes time. Soon I can start with the paint job. I think the plane looks like a real Mustang racer with the boom long as possible to get a stable flyer. Now I am looking for the paintnumbers for the Strega.
Take a look at the Strega 45:
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Old 05-31-2008, 02:50 AM
  #310  
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Default RE: new design: Strega 45

Yesterday I have started with the wing bolt construction. On card board I have drawn the sizes and cut it out to fit in the fuse.
Drawn in a CAD programm and after cutting them the cnc cutted formers were ready. Sand with 80 or 100 gritt the fuse before glueing with UHU plus. Use your wifes clamps to get the stuff together:
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Old 05-31-2008, 03:09 AM
  #311  
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Default RE: new design: Strega 45

Now I could not work on the fuse for many hours I started with the retracts. Remove the foam first use a sharp knife and pull out the foam. Start with the two longest und pull out the 3mm for these. Then pull out the foam for the horizontal retract former. So 3mm deep.
The less deep longer one is for the front and the other one for the back. Mount small insert nuts in the retract plate and glue them with ZAP pink. Glue the three parts at 90 degrees together in the right way watch the positions with ZAP green an pink.

On request and because it is better I have made the top of the retracts flush with the wing top by using a 1,5mm plywood former around the retracts. So this former has the same thickness as the retract mounting plates.
I have made a small mistake with the first cnc file for cutting out the retracts. I forgot the belly pan, I am glad Danny noticed it before glueing in the retracts. So I have made a new cnc cutting file for only cutting the retracts out of the wing over the wrong cut out places. I will have to use some filler but it is hardly a problemm. I only had a problemm I had to do that again.
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Old 05-31-2008, 03:21 AM
  #312  
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Default RE: new design: Strega 45

For reinforcement I have cut some small pieces 3x3mm spruce. First apply some UHU plus in all corners with a piece off thin wood.
Apply in all corners and around the nuts. Be carefull with the thread. Before using the small insert nuts before I have tested the thread !! With a set of tweezers push the pieces wood in the corners. Apply I again a thin layer of UHU plus. Let it dry for a night.
This morning I have bought some fresh polyurthane construction glue. This glue foams on humidity and it hardens out.
So in 10 minutes I will start glueing in the retracts formers in the wing permanently.
Please do not hesitate to interrupt this one man show if you have questions or remarks !
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Old 05-31-2008, 03:23 AM
  #313  
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Default RE: new design: Strega 45

I will sand the sticks that were too long after the glue is dry. After a small break I will glue in the retracts.
Old 05-31-2008, 03:26 AM
  #314  
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Default RE: new design: Strega 45

I am sure to use these colours. I think the red is a dark orange ??
The white is signal white. Now I need to find out the dark orange.
Maybe blud (blut) orange.
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Old 05-31-2008, 04:45 AM
  #315  
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Default RE: new design: Strega 45

I forgot to tell an important issue: sand all corners at 90 degrees before glueing together !!
A round cnc cutter can not make 90 degrees corners so you will have to use a fine sanding tool.
Old 05-31-2008, 05:31 AM
  #316  
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Default RE: new design: Strega 45

Who can tell me the right name to Google up the signs on the fuselage for the Strega ?
Maybe a website with logo's. I have looked on the Strega website but only the Shell logo I could fine with a clear logo.
I want to apply them on the fuse with a waterslide decal. Thanks !
Old 05-31-2008, 06:54 AM
  #317  
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Default RE: new design: Strega 45

I have found these but am looking for more race images.
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Old 05-31-2008, 07:21 AM
  #318  
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Default RE: new design: Strega 45

Some more:
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Old 05-31-2008, 09:25 AM
  #319  
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Default RE: new design: Strega 45

After the glue has been dried fill the thread with childrens clay, sand the top and sides to remove glue spots:
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Old 05-31-2008, 09:33 AM
  #320  
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Default RE: new design: Strega 45

To glue the retract set use polyurethane glue. But first fit if there is no pressure and all fits well, sand if neccessary or remove some foam. Make the wood to be glued a little wet with your hands and use a towel to dry the wood. The glue hardens out with humidity.
Apply the glue and spread it. Protect the thread and the middle part with masking tape. When the glue has been dried cut it of with a knife and sand it with 80 gritt. Watch the first hour if the retract set is not coming up so press it down.
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Old 05-31-2008, 12:09 PM
  #321  
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Default RE: new design: Strega 45

One more :

Old 05-31-2008, 02:27 PM
  #322  
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Default RE: new design: Strega 45

Thank you !! That is a very nice one ! The size and brightnes is also good.
I want to make an A4 with decals to put on my plane.
I have found Rolls Royce too for the nose.
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Old 05-31-2008, 08:50 PM
  #323  
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Default RE: new design: Strega 45

found this one seems fitting..sort of..lol..too bad it wont blend..but I just wanted to chime in and say this is a fantasic model your building...I would really like to hear about the performance of the OPS 60 when you get around to testing some engines out
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Old 06-01-2008, 01:06 PM
  #324  
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Default RE: new design: Strega 45

Thanks !! I appreciate your support. The model will be drop dead georgeus when painted with the Strega scheme and all the decals and signs. I can not wait to fly this baby. It takes time to build this model and design all parts for well fitting and function. The OPS 60 should give a lot of power in this small model with the right prop. But the OS 45 DF will give the Strega enough speed because the wings are relative thin for this size plane. Now I am still looking for the right colour red/ orange. Thanks again !
Old 06-02-2008, 12:23 PM
  #325  
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Default RE: new design: Strega 45

After cutting and pulling out the foam for the retracts and wheels the fitting of the engine, header and pipe:
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