Strykaas

look,
very nice skills and cool project !!!
One question though : what are those skulls on the workbench [X(] ?

look

Thank you.
That skulls were from not paying customers (joke).
I bought these on a fair for practicing drawing and for airbrushing.
I have seen the video from Cross eyed about airbrushing a skull.

look

After the last release agent, the iron hardware and borders all is ready for moulding.

look

The stabtips glued with Elmers white:

look

The wingtips shaped, sanded and fine sanded:

look

Now I will make the ailerons working, the hinge from kevlar is allready glued in the wing.
I will cut the foam and cut the sides. The bottem skin has been cut CNC. The top of the wingskin will be carefully cut just to the kevlar. After that the hinge is working. You will not need to do this it has been done here before shipping.
When the aileron is working it is time to glue the wings together with ZAP 5 minutes on a wingjig made of MDF.

look

Today I am working on the second part of the fuse mold.
Pictures later. It is a lot of work but going well.

mmattockx

Incredible build thread, Look. The quality and attention to detail in your work is amazing. I look forward to seeing the final prototype fly some fast laps!

Mark

look

Mark,
Thank you very much !!
I will continue this thread. Do you want to see the paintjob and video from the first flight ?
Now I will finish the mold with the last layer. Sunday I can open the mold.
Monday I can make the first fuselage.
Best regards,
Look.

YUKONFLYR

Really enjoying this thread,

look - thanks for the extra effort in taking all of the pictures and uploading them with the story as it progresses.

Richard

look

Richard,
Thank you. I like to do it and explain the building of a fast model. With my first really fast model I have had the problemm that I had used to thin aileron steering rods (2mm) and one was brooken on my Stinger 40 with a Nelson FIRE with a venturi. So I was in big problems. The tank was full, throttle couldn't be stopped and fuel shutt off I did not mount because I did not know how. After some broken nervs I could land the model but I was in another world. There is not much info how to build a really fast model. Important is to glue in a wingspar and make an eggshape glasscloth in the middle of the wing and use strong aileron rods like the sullivan 4-40's. Also important is strong elastic flaps from kevlar or use enough hinges. Some people use 3 hinges on a aileron. Five is stronger and better. A glued in CNC controlhorn is reliable. Not reliable is a plastic controlhorn because it will break.
Best regards,
Look.

look

The fuse mold is ready !!! Tomorrow I will work further on the wing. But first I have to buy some new materials.

look

The ailerons with elastic flaps made from kevlar:
first I have marked the ailerons, make the necessary cuts with a sharp (japanese) saw, cut the foam and remove it at the bottom side. Scratch the hinge line on the top with a sharp tool but not a knife and use a fine file to make more clearance.
You will not have to do this, I will do this before shipping.

look

Brush some epoxy on the inside of the aileron on the foam. After glueing the wings together put the wingspar in the wing with construction glue, make glasscloth in the middle part of the wing and sand it to zero. Do not damage the wood ! Cover the whole wing with a light wood sealer that was used for paper wings and sand it light. Bring thin 25 gramms glasscloth on the wing top, do not bend around the corners but after drying sand it. Later the bottem will be done. Use for the glasscloth thin epoxy (like water) or polyurethane lacker. These pictures I will show later.

Strykaas

Look, you seem to use high quality stuff (especially resins). Could you please tell us the exact resin product reference and the weight of woven fiberglass cloth you use ? What is that light blue stuff ?
Thanks !

look

Hi,
I use Araldit formenhars from Avanti Co. and 160 grams and 280 grams glasscloth.
The blue stuff is a kind of children clay to close small gaps.
If you do not use that the formenhars (gelcoat from epoxy) is leeking (running through)
and your mold or plug will be damaged.
Look.

look

Other light blue stuff is the hardener for the 24 hours epoxy. Mixed with cotton and chopped strands.

look

I have build a stab for testing a paintscheme and colours. You have to see the design and colour on a wing or stab to seen if you like the design and colours. On one side I will make a sample for the Strega and on the other side for the new racing jet.
First I have drawn in a CAD program a design. I have split the lines from the design in colour parts and separated them for cutting in paper or cutting cnc to draw the lines with a pencil on the wing or stab. Tomorrow I will sand the stab that has been primered today.
And tomorrow I will spray some paint on the stab. With a plotter I will make the signs for the model like Strega and the big 7 on the tail. Here is the beginning of the design:

Nickosfly

Hi Look,

Do you sleep, or work al day and night???
You are doing great work.
Cant wait to hold it in my hands.....

SeeYaLater
Nickos

look

Hi Nickos,
Sometimes I sleep a short while !!
But sometimes I can not stop.
I want to fly with this baby.
Now some painting.
Regards,
Look.

look

I could not wait till tomorrow sanding the stab. But I have used a 2K primer so sanding was no problemm.
I sanded with 180 gritt and after that with schotch brite red to remove the scratches.
Here are the samples of bringing your design on the wing or stab. The stab has been printed on 160 grams paper
and the wing design has been cnc cut in cheep plywood.

look

The Strega sign designs that will be cut with a signplotter and used as a spraymask for paint. Painted signs looks better than adhesive signs because it is thinner. It will be sprayed in a basecoat, some clours in House of kolor paint and after that a 2K clear as topcoat. Here are some samples of the signs which I am going to use on the Strega:

look

Here is the stab sanded and marked with a pencil.
I have used Scotch tape 3mm for masking:

look

After masking the other parts with tape and paper you are ready for the first colour on your paintjob:

look

Before painting use a tack cloth to remove the dust. Be carefull during masking with greasy fingers that will give silicon in your paintjob ( small holes ). Tomorrow I will paint three colours. I use a Sata 1,2mm airgun. Filter the paint before use for small parts.
I bought a big charcoal filter in a weetshop and used a vacuumpomp to make a spraybooth filter. That works fine and clean. The walls are masked with plastic sheets. Use in the airline a waterfilter to remove water and oil from the compressor.