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RE: new design: Strega 45 - 3/26/2008 12:16:07 PM   
Strykaas



Posts: 3863
Joined: 3/21/2003
From: Paris, FRANCE
Status: online 		look,
very nice skills and cool project !!!
One question though : what are those skulls on the workbench ?

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< Message edited by Strykaas -- 3/26/2008 12:18:01 PM >

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RE: new design: Strega 45 - 3/26/2008 1:37:51 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		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.

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       Post #: 77

RE: new design: Strega 45 - 3/26/2008 1:39:34 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		After the last release agent, the iron hardware and borders all is ready for moulding.

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       Post #: 78

RE: new design: Strega 45 - 3/26/2008 4:40:56 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		The stabtips glued with Elmers white:

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       Post #: 79

RE: new design: Strega 45 - 3/26/2008 4:42:15 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		The wingtips shaped, sanded and fine sanded:

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       Post #: 80

RE: new design: Strega 45 - 3/26/2008 4:47:27 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		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.

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       Post #: 81

RE: new design: Strega 45 - 3/27/2008 2:41:32 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		Today I am working on the second part of the fuse mold.
Pictures later. It is a lot of work but going well.

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       Post #: 82

RE: new design: Strega 45 - 3/27/2008 4:48:49 PM   
mmattockx


 

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From: Calgary, AB, CANADA
Status: offline 		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

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       Post #: 83

RE: new design: Strega 45 - 3/27/2008 5:16:00 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		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.

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       Post #: 84

RE: new design: Strega 45 - 3/27/2008 7:03:31 PM   
YUKONFLYR



Posts: 211
Joined: 4/18/2007
From: WHITEHORSE, YT, CANADA
Status: offline 		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

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       Post #: 85

RE: new design: Strega 45 - 3/27/2008 7:16:42 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		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.

< Message edited by look -- 3/28/2008 6:22:05 PM >

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       Post #: 86

RE: new design: Strega 45 - 3/27/2008 7:18:13 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		The fuse mold is ready !!! Tomorrow I will work further on the wing. But first I have to buy some new materials.

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       Post #: 87

RE: new design: Strega 45 - 3/27/2008 8:48:52 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		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.

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       Post #: 88

RE: new design: Strega 45 - 3/27/2008 8:55:15 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		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.

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       Post #: 89

RE: new design: Strega 45 - 3/27/2008 8:58:45 PM   
Strykaas



Posts: 3863
Joined: 3/21/2003
From: Paris, FRANCE
Status: online 		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 !

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RE: new design: Strega 45 - 3/28/2008 2:57:01 PM   
look


 

Posts: 408
Joined: 10/25/2003
From: HaarlemNH, NETHERLANDS
Status: offline 		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.

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