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Nov 18, 2019, 07:48 AM
eYeboxFPV
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Build Log

LA5 FN 650mm 210g (1:15)


Hi guys!
I have already designed, printed and crashed two planes from PLA and PETG many times.
Every unsuccessful landing ends in failure. I have to print for many hours.
My EXTRA300 model without glue turned out to be very technological for replacing broken parts, but breakdowns still happen often.
I decided to make the plane smaller and lighter. A 1:15 scale allows you to make planes with a flight weight of less than 250 grams. My first model on this scale is the LA5 FN. La-5 is a Soviet single-engine fighter created under the leadership of S. A. Lavochkin in 1942. The aircraft was a single-seat monoplane with a solid wood structure with retractable landing gear and a closed cockpit. The original name is LaGG-5.
Two wings are made for this model. One completely made of foam, cut with a hot string, the other wing printed from PLA.
In the first flight I used a lightweight foam wing, it weighs 35 grams along with a servo.
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Nov 18, 2019, 07:55 AM
eYeboxFPV
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First flight. An unsuccessful launch could fail for a heavier model, but this aircraft is immediately ready to restart. After trimming, the plane flies well and is controlled.
3Dprint LA5 650mm 210g (2 min 52 sec)
Nov 18, 2019, 10:24 AM
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japim's Avatar
What nozzle size/ wall thickness/layer height did you use for this print? Standard 0.4/0.4/0.15? or something different?
Nov 18, 2019, 10:51 AM
eYeboxFPV
victorbah's Avatar
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0.4/0.25
Nov 18, 2019, 11:25 AM
Registered User
Lavochkin?

Always good!

Will follow your build closely......

Greetings:Robin
Nov 19, 2019, 09:13 AM
Registered User
wow! nice plane!
Can you post your motor/esc setup?
Waiting for some more infos
Nov 19, 2019, 10:12 AM
eYeboxFPV
victorbah's Avatar
Thread OP
motor 1808-2100kv
esc 10a
prop 6x3.5
2 servo 5g

full time for printing the fuselage about 10 hours
Nov 19, 2019, 10:55 AM
Registered User
Will you post the stl files?
Nov 19, 2019, 01:11 PM
Registered User
Mister Victor Bakharev,

I have the same guestion about the files.
What are your plans?
Are you going to post them somewhere?

Here is why I am interested in your files: https://www.modelbouwforum.nl/thread....254273/page-5

As you can see,I am designing/printing the Lavochkin La-7! (together with Tim)


Greetings:Robin
Last edited by 3 DDD; Nov 19, 2019 at 01:20 PM.
Nov 19, 2019, 05:02 PM
Registered User
I want more information, especially about where I can get the STL files. This small model looks like a lot of fun.

My other 3D printed airplanes are all too large, none of them are light, they all require intense attention to fly them successfully, and a crash like the one in the video would have resulted in a pile of scrap plastic.
Nov 21, 2019, 02:57 AM
eYeboxFPV
victorbah's Avatar
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Thank you for your interest in my work. After some corrections, I plan to sell files and instructions.

I changed the battery load, now I do not need to remove the wing.
I am going to make two design options.
The first option will be with a wing and a stabilizer made of foam. This option is easier and more resistant to destruction.
The second option will be fully printed from PLA.

I have a 3D printer that prints 380mm along the Z axis, and therefore the design has only one joint, but for greater compatibility, I plan to make a maximum size of Z 200mm. This will require a little rework.
Last edited by victorbah; Nov 21, 2019 at 07:58 AM.
Nov 22, 2019, 02:22 AM
Registered User
Nice!

Thank you for the drawing.It really is a Lavochkin La-5!
Good luck with the next proces Victor.
Ivan Kozhedub would be proud.......

Greetings:Robin
Dec 12, 2019, 02:45 AM
eYeboxFPV
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Thread OP
Quote:
Originally Posted by 3 DDD View Post
Nice!

Thank you for the drawing.It really is a Lavochkin La-5!
Good luck with the next proces Victor.
Ivan Kozhedub would be proud.......

Greetings:Robin

made a design for Z = 200mm.
In addition to the wings from the foam, I made wing files for the PLA.
the fuselage consists of 4 parts and a wing of 3 +2 parts.
Dec 14, 2019, 04:30 PM
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japim's Avatar
Nice work!
Dec 19, 2019, 10:41 AM
eYeboxFPV
victorbah's Avatar
Thread OP
hybrid wing PLA structure
new wing 740mm -80g the shell will be made of 3mm XPS

full 3d print wing 740mm - 130g

full 3d print wing 650mm - 90g
Last edited by victorbah; Dec 19, 2019 at 02:42 PM.


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