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KARAT from RT DESIGN, Build Thread by ISAAC NAJARY

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KARAT from RT DESIGN, Build Thread by ISAAC NAJARY

Old 07-30-2021, 06:10 AM
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najary
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Default KARAT from RT DESIGN, Build Thread by ISAAC NAJARY

Hi all

This is the eighth build thread of my build threads series:

SENSATION +, Build Thread by ISAAC NAJARY





FANTASISTA EVO Build Thread by ISAAC NAJARY


ARIXTRA Build Thread by ISAAC NAJARY


Electric ZN Line Xigris C2 Build Thread


Electric Osmose Building


Najarylyzer


F3A Lights


Best regards,

Isaac Najary
Old 07-30-2021, 06:27 AM
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This is all composite kit made by FalconHobby.
A lot of thinking was putting in the designing of this plane, I like it were much.
The kit quality is excellent !!!
Best regards,
Isaac Najary






Best regards,
Isaac Najary

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wattsup (07-30-2021)
Old 07-30-2021, 10:30 PM
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Looking forward to this one! I've been assembling two Karats for quite some time now. One of them is pretty ready for paint and hopefully I'll have it painted when the weather warms up.
Old 07-31-2021, 12:14 AM
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The first thing that I always do when starting a new project is weighing the kit parts.

Isaac Najary






















Old 07-31-2021, 12:18 AM
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The second thing is writing an Excel worksheet with all the parts weights and the moments from the planning C.G.

The moments are used to know in advance where the motor battery tray will be and how much the battery should be moved in order to move the C.G. 1 cm' so the battery tray can be planned properly.

In glow planes, one can know in advance, if the plane is going to be tail or nose heavy and try to eliminate the problem.

I update the Excel during the course of the building process with the actual weights and mark them in green.

The KARAT Excel enclosed herewith,

Sorry for the Hebrew,

Best regards,

Isaac Najary
Attached Files
File Type: pdf
????? ?????? KARAT.pdf (193.4 KB, 84 views)
Old 07-31-2021, 02:06 AM
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Hello Isaac,
interesting report, I will follow it closely.
But too bad I don't know Hebrew.
Can you please give the total bodyshell weight of the model in grams. I think that would help not only me, but also quite a few others.
Greetings
Gerhard
Old 07-31-2021, 11:31 PM
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Originally Posted by Flowmotion View Post
Hello Isaac,
interesting report, I will follow it closely.
But too bad I don't know Hebrew.
Can you please give the total bodyshell weight of the model in grams. I think that would help not only me, but also quite a few others.
Greetings
Gerhard
Hu Gerhard,
That is why I put picture of all the kit parts so you can calculate the weight by yourself.
Best regards,
Isaac Najary
Old 08-03-2021, 02:53 AM
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Old 08-04-2021, 10:59 PM
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Old 08-06-2021, 11:15 PM
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Old 08-08-2021, 08:44 AM
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Old 08-08-2021, 08:48 AM
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From :
https://vlvinternational.square.site/s/shop




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Old 08-13-2021, 04:47 PM
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Great Isaac, been long since your last build thread. Looking forward to see the progress and your master piece craftmanship.
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Old 08-15-2021, 05:50 AM
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Old 08-17-2021, 08:57 AM
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Old 08-18-2021, 08:58 PM
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Old 08-21-2021, 10:14 PM
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Old 08-23-2021, 10:54 PM
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Clear canopy and the pilot add 50 gram to the plane.






















Old 08-25-2021, 03:20 AM
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Old 08-26-2021, 08:50 AM
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Old 08-26-2021, 09:03 AM
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After only 26 days, the plane is ready for the painting process!!!
I have to say that this plane is top top quality, everything is super straight and the money value is excellent.
https://falconhobby.eu/en/modell/58/...EszqgOKmh4GpKo



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Old 08-27-2021, 06:55 AM
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Weights before the finish process







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Old 08-27-2021, 06:58 AM
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KARAT finish process - step 1



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Old 08-29-2021, 07:47 AM
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KARAT finish process - step 2


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Old 09-06-2021, 02:41 PM
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Nice work Isaac
Does the Karat have have any wing stagger. Most designs seem to have some positive stagger but looking at the interplane strut arrangement on the Karat it may have no stagger or possibly negative stagger. While positive stagger may improve lift efficiency this doesn’t make sense with an aircraft that spends half it’s time inverted where positive then becomes negative stagger. I guess the best arrangement would be zero stagger. Maybe aerodynamically stagger doesn’t matter that much and then it just becomes a style issue, where a little positive stagger “looks nice” when the model is sitting on the ground and it looks right.

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