New guy, first plane build, suggestions please.

Ironclad_Reaper

New member
Hello Everyone!

I am close to the finishing stages of building my first RC Plane. I 3D printed it and trying to do my best, researching which electronic parts I needed. I still don't have the grasp of the math yet on how to pick the parts so I hope some of you can look at my build and tell me where I went right or wrong. All comments are greatly appreciated!

Project - Acrobatic SU-29 4ch (4 Servos, 1 Motor)

Plane Length - 41” (1041.4mm) with propeller/nose 44” (1117.6mm)
Plane Width - 44 ¼” (1123.95mm)
Plane Weight(no electronics) - 902g (1.99lbs)
Weight Electronics - w/Wide prop - 279g (0.62lbs) - w/Thin prop - 285g (0.63lbs)
Total weight - w/Wide prop - 1179.34g (2.60lbs) - w/Thin prop - 1188.412g (2.62lbs)

Plane material:
Body - PLA
Tires - TPU
Carbon fiber rods and tubes
304 Stainless Steel 1.2mm Z Push Rods
Nylon Control Horns 21x10mm
T Plug Deans to XT60

Electronics:
Motor - Flash Hobby D3542-4 1450KV Max Pull 1420g 690watts 87g
ESC - Flash Hobby 80A 5v@7A BEC LiPo 2-6s 51g
Battery - Zeee 2200MAh 50c 11.1v 24.42Wh 90g
Receiver - FlySky FS-1A6b 4.0-8.4v/DC 2.4ghz 6ch 10g
Servos - 4x Smraza 9g S51 29g
Prop 1 Thin - APC(Advanced Precision Composites) LP12080E 12x8 18g
Prop 2 Wide - APC(Advanced Precision Composites) LP1208W 12x8 12g
 
Hello Everyone!

I am close to the finishing stages of building my first RC Plane. I 3D printed it and trying to do my best, researching which electronic parts I needed. I still don't have the grasp of the math yet on how to pick the parts so I hope some of you can look at my build and tell me where I went right or wrong. All comments are greatly appreciated!

Project - Acrobatic SU-29 4ch (4 Servos, 1 Motor)

Plane Length - 41” (1041.4mm) with propeller/nose 44” (1117.6mm)
Plane Width - 44 ¼” (1123.95mm)
Plane Weight(no electronics) - 902g (1.99lbs)
Weight Electronics - w/Wide prop - 279g (0.62lbs) - w/Thin prop - 285g (0.63lbs)
Total weight - w/Wide prop - 1179.34g (2.60lbs) - w/Thin prop - 1188.412g (2.62lbs)

Plane material:
Body - PLA
Tires - TPU
Carbon fiber rods and tubes
304 Stainless Steel 1.2mm Z Push Rods
Nylon Control Horns 21x10mm
T Plug Deans to XT60

Electronics:
Motor - Flash Hobby D3542-4 1450KV Max Pull 1420g 690watts 87g
ESC - Flash Hobby 80A 5v@7A BEC LiPo 2-6s 51g
Battery - Zeee 2200MAh 50c 11.1v 24.42Wh 90g
Receiver - FlySky FS-1A6b 4.0-8.4v/DC 2.4ghz 6ch 10g
Servos - 4x Smraza 9g S51 29g
Prop 1 Thin - APC(Advanced Precision Composites) LP12080E 12x8 18g
Prop 2 Wide - APC(Advanced Precision Composites) LP1208W 12x8 12g
Please, please, please for the love of all things holy do not make this your first. You will crash. Never do 3d printed first.
 

Shurik-1960

Well-known member
For a model with a wingspan of up to 1 meter, the flight weight should not exceed 600-700 grams. Next - flying bricks. Your electronics must lift this brick into the air. You should understand that the flight speed of the model will be very high. Take off and plant the model in the tall grass (your first flights).Good luck.
 

quorneng

Master member
Ironclad_Reaper
Good that you gave such complete details of your plane but as suggested the Su29 is an advanced aerobatic type. In full size you would not be allowed anywhere near it until you had first leaned to fly a "trainer" plane and then acquired a good many hours of aerobatic practise on easier types and even then satisfied a qualified instructor that you had the necessary skills.
A scale model plane is no different. The Su29 should be at least your fourth or fifth plane. No harm in building it, just don't try to fly it.
If you can find a really experienced RC pilot he may test it for you but I doubt he would. Just too big a risk of destroying it in seconds.

Start with a simple, cheap and robust plane specifically intended to learn on. Unless you learn to fly under instructor tuition with a buddy dual control system you will likely crash even a "trainer" pretty quickly too.
Unlike birds human do not naturally understand the complexities of flight. We have to learn what we see the plane is doing, decide what to do about it and do so within in a fraction of a second.
To be a competent pilot much has to become "instinctive reactions" rather than positive thought processes.
I hope this helps explain what we are trying to get at.