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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 09-07-2021, 02:01 AM
  #26  
najary
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Originally Posted by bandicootf16 View Post
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.
What do you mean by positive or negative stagger?
Old 09-07-2021, 02:07 AM
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KARAT finish process - step 3









Old 09-07-2021, 04:34 AM
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Originally Posted by najary View Post
KARAT finish process - step 2

Isaac, silly question. How do you clean the fuse after wet sanding with dish washer soup?

Thanks.
Old 09-07-2021, 01:27 PM
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Originally Posted by najary View Post
What do you mean by positive or negative stagger?

Hi Isaac
My understanding is that positive stagger has the top wing forward of the bottom and negative the top is behind the bottom. With no stagger the top and bottom wing LE would be inline/square to each other with reference to the fuselage datum.
Old 09-11-2021, 09:31 PM
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Originally Posted by Ricardo M. View Post
Isaac, silly question. How do you clean the fuse after wet sanding with dish washer soup?

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Hi,
This is not a silly question, after wet sanding I clean with soft cloth and methanol.
Best regards,
Isaac Najary
Old 09-11-2021, 09:36 PM
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Originally Posted by bandicootf16 View Post
Hi Isaac
My understanding is that positive stagger has the top wing forward of the bottom and negative the top is behind the bottom. With no stagger the top and bottom wing LE would be inline/square to each other with reference to the fuselage datum.
Hi,
The KARAT has no stagger.
Best regards,
Isaac Najary
Old 09-12-2021, 04:10 AM
  #32  
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Default composite construction material.

what material is used in the composite Rohacell, Divinycell, or something else ?
Old 09-14-2021, 12:24 AM
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Originally Posted by spl View Post
what material is used in the composite Rohacell, Divinycell, or something else ?
Sorry, I don't know.
Best regards,
Isaac najary
Old 09-14-2021, 12:32 AM
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Preparing the stands for the clear coat



















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