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Apr 02, 2017, 04:32 PM
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Lynxman's Avatar
Discussion

3D printable micro helicopter.


3D printed helicopter. (1 min 28 sec)


I am designing a fully 3D printable helicopter. Everything is printed except for the mast (3mm carbon fiber rod), ball bearings, screws and electronics.

It's currently fixed pitch. I have made and flown both flybared and flybarless versions of the head. It now flies flybarless with a simple Orange FASST receiver with integrated 3-axis gyros.

I have designed most of the parts for a CCPM collective pitch version but haven't printed it yet. I'm making a body for it now. I'll upload the whole thing to Thingiverse soon.


Servos:
https://hobbyking.com/en_us/turnigyt...0sec-5-6g.html
http://www.banggood.com/JX-Servo-DHV...tml?rmmds=cart

Tail motor:
https://hobbyking.com/en_us/ntm-prop...400kv-40w.html

Main motor:
https://hobbyking.com/en_us/c10-micr...er-2100kv.html (The prototype motor. Needs longer shaft. Easy modification)
https://hobbyking.com/en_us/turnigy-...or-2300kv.html (Needs longer shaft out the bottom end. Easy modification)
Last edited by Lynxman; Apr 02, 2017 at 04:37 PM.
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Apr 02, 2017, 08:44 PM
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ChespiIker's Avatar
Impressive! Interesting to compare the cost with commercially sold helis, which should be cheaper due to volume!
Congratulations, Sir....I could never accomplish what you have done....superb!
Apr 03, 2017, 04:27 AM
Registered User
Wow, pretty stable. 8-) Cool and interesting project~!!

Keep'em coming!!!
Apr 03, 2017, 05:54 AM
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chulian1819's Avatar
genius!
Apr 03, 2017, 08:45 AM
Registered User
Hi Lynxman,

Congratulation! How about the cost of such 3D printed parts apart from your efforts?
Apr 03, 2017, 09:21 AM
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Lynxman's Avatar
The printed parts cost 15 NOK in plastic, which is 1,75 USD. It's not about cost though, but fun. The body uses another 16 NOK in plastic.

Also required:
Two 3x6x2,5 main shaft ball bearings.
One 10x15x4mm swash ball bearing.
3x75mm carbon rod for the main shaft.
Assortment of #0 screws. Three for assembling the plastic parts and three for the tail motor.
M2x6mm screws for the main rotor blades and main motor.

The CP version will require two 2x5x2,5mm ball bearings for each blade.
Apr 03, 2017, 12:57 PM
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Lynxman's Avatar
Here's the body. It looks very cute. The rear part is secured with four screws while the front just clips on. It's not necessary to remove it to change battery.

My little 18mm motor isn't up to the job of the extra weight though. I think I'll make the CP version now.
Apr 03, 2017, 01:12 PM
MOD IT LIKE YOU STOLE IT!
katoace's Avatar
AWSOME!........3d printing/printers are some real-world star trek futuristic sh**. Using one to build a heli to your own specs and preferance..............Brilliant.....Though i'd prolly just go pod and boom bodywise........Hell maybe even 3d print some scale bodies for it.....again......F'n Brilliant!......................Kato
Apr 03, 2017, 07:00 PM
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Lynxman's Avatar
It would look great with some googly eyes wobbling around while flying. I have to buy some.


These three are plastic model kits and I made 3D-printed mechanics and rotors for them to make them flyable. The Lynxes fly great.
Apr 04, 2017, 01:36 PM
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Lynxman's Avatar
Here's a preview of the CP version.
Apr 04, 2017, 08:36 PM
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Lynxman's Avatar
It flies. I'm having a hard time dialing in the yaw gyro on the KDS E-bar v2 though. Cyclic feels great, however. So far I have the best tail performance with the ZYX S2, and cyclic being about the same with KDS, K-bar and ZYX.

3D printed CP heli. (1 min 13 sec)
Apr 04, 2017, 09:20 PM
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ChespiIker's Avatar
You, Sir, are a GENIUS! Great work.....I believe the comments about cost were made because we are curious about the cost of your heli vs. what we pay for a heli BNF...to ascertain what we know....that manufacturers have overcharged us always!
Apr 05, 2017, 12:52 AM
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Lynxman's Avatar
Here's the CP version. It flies well. I managed to improve the tail gyro through settings.

http://www.thingiverse.com/thing:2228097
Apr 05, 2017, 12:59 AM
Registered User
Quote:
Originally Posted by Lynxman
It flies. I'm having a hard time dialing in the yaw gyro on the KDS E-bar v2 though. Cyclic feels great, however. So far I have the best tail performance with the ZYX S2, and cyclic being about the same with KDS, K-bar and ZYX.

https://youtu.be/8GmalS5hhr4
what tail servo are you using? in my limited experence between the zyx gyros and kbar. i had servos that worked fine on the zyx style and did not on the kbar.
Apr 05, 2017, 02:04 AM
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Lynxman's Avatar
I wouldn't have problems if the tail was servo controlled. These gyros probably aren't designed for tail motors.

Ironically, the rate gyro in the Orange plane stabilizer receiver is working great at max gain, while heilcopter gyros are often a pain to tune, except for the ZYX S2, which was fine once I got it to run the ESC.


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