KARAT from RT DESIGN, Build Thread by ISAAC NAJARY
07-30-2021, 06:10 AM
#1
Thread Starter
Join Date: May 2003
Location: Ramat Hashrone, ISRAEL
Posts: 1,187
Likes: 0
Received 30 Likes
on
27 Posts
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
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
07-30-2021, 06:27 AM
#2
Thread Starter
Join Date: May 2003
Location: Ramat Hashrone, ISRAEL
Posts: 1,187
Likes: 0
Received 30 Likes
on
27 Posts
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
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
The following users liked this post:
wattsup (07-30-2021)
07-30-2021, 10:30 PM
#3
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.
07-31-2021, 12:18 AM
#5
Thread Starter
Join Date: May 2003
Location: Ramat Hashrone, ISRAEL
Posts: 1,187
Likes: 0
Received 30 Likes
on
27 Posts
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
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
07-31-2021, 02:06 AM
#6
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
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
The following users liked this post:
wattsup (08-04-2021)
The following users liked this post:
wattsup (10-04-2021)
The following users liked this post:
wattsup (08-14-2021)
The following users liked this post:
wattsup (08-15-2021)
The following users liked this post:
wattsup (08-19-2021)
The following users liked this post:
wattsup (08-19-2021)
08-26-2021, 09:03 AM
#21
Thread Starter
Join Date: May 2003
Location: Ramat Hashrone, ISRAEL
Posts: 1,187
Likes: 0
Received 30 Likes
on
27 Posts
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
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
The following 2 users liked this post by najary:
rcprecision (08-26-2021),
wattsup (08-26-2021)
The following users liked this post:
perttime (09-06-2021)
The following users liked this post:
wattsup (08-29-2021)
The following users liked this post:
Ricardo M. (08-30-2021)
09-06-2021, 02:41 PM
#25
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.
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.
