HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Feb 05, 2014, 03:31 PM
Registered User
Joined May 2011
691 Posts
Discussion
One more servo driven ornithopter

One more servo driven ornithopter from an professional ornithopterist.
I'm not sure but probably the servo is reworked to rotate continuously .

Wingspan - 66.5"
Weight - 66g
Drive - modified HS-65 servo
2.4 GHz radio: rudder, elevator, two servos to wing twist
Wing membrane - plastic bag


66.5" RC Indoor ornithopter (0 min 18 sec)


and some more of the same author work

66" and 16" Ornithopter flying together (0 min 26 sec)


12", 3.5g ornithopter.
Motor MK04-12mm 1:125 gearbox
Battery = 40mAh Li-Po single cell
Radio Deltang RX41
0.3-0.5mm Carbon fibre, 2.2g/m2 Mylar
Plantraco NanoAct


3.5g, 12" RC Ornithopter (1 min 38 sec)
seagull10 is offline Find More Posts by seagull10
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 05, 2014, 09:18 PM
Registered User
Palo Alto, California, United States
Joined Jan 2003
1,008 Posts
Very cool!

5.5 ft wingspan and 66g, that's a big floater of an ornithopter! I doubt I could build a flapper that lightweight let alone that large.


Steve
mlbco is online now Find More Posts by mlbco
Reply With Quote
Old Feb 06, 2014, 12:46 AM
Registered User
Velko Velkov's Avatar
Joined Sep 2007
474 Posts
Wingspan - 66.5"
Weight - 66g
Drive - modified HS-65 servo
2.4 GHz radio: rudder, elevator, two servos to wing twist
Passive articulation of the wing ?
Wing membrane - plastic bag

Two servos to wing twist
Or for change of angle of incidence ?
Velko Velkov is offline Find More Posts by Velko Velkov
Reply With Quote
Old Feb 06, 2014, 04:54 PM
Registered User
Joined May 2011
691 Posts
Sorry guys but I don't have more information about this ornithopter. I know the author (not in person) and he is an RC groups member so I hope he will pop up
and to satisfy our curiosity.
seagull10 is offline Find More Posts by seagull10
Reply With Quote
Old Feb 07, 2014, 10:22 AM
Registered User
Patricia J B's Avatar
Joined Oct 2003
444 Posts
Very interesting, especially the larger one.
Patricia J B is offline Find More Posts by Patricia J B
Reply With Quote
Old Feb 07, 2014, 10:54 AM
Wid
Live Your Dreams
Wid's Avatar
United States, CA, Redwood Valley
Joined May 2001
353 Posts
more info?

Thanks for posting Seagull
I would like to learn more about the 66.5 in orni. It is the first indoor flyer I have seen with the graceful wing movement I so enjoy. Injuries force me to do most of my flying inside at the moment so I would like a slow flapping graceful indoor orni. Hopefully the author or builder will join this discussion.
Wid is online now Find More Posts by Wid
Last edited by Wid; Feb 07, 2014 at 02:27 PM.
Reply With Quote
Old Feb 07, 2014, 11:04 AM
Registered User
Joined Feb 2014
15 Posts
Hi guys,
I posted those videos.
The small ornis are all mine. The big one is built by my friend and co-worker Eric.
He is not a big fun of computers, so I will post some pics on Monday.
In the mean time you can ask me about small ones.
SingSoftKitty is offline Find More Posts by SingSoftKitty
Reply With Quote
Old Feb 07, 2014, 12:47 PM
Registered User
Velko Velkov's Avatar
Joined Sep 2007
474 Posts
....................
Velko Velkov is offline Find More Posts by Velko Velkov
Last edited by Velko Velkov; Feb 14, 2014 at 07:23 AM.
Reply With Quote
Old Feb 07, 2014, 05:28 PM
Registered User
Joined May 2011
691 Posts
Quote:
Originally Posted by SingSoftKitty View Post
Hi guys,
I posted those videos.
The small ornis are all mine. The big one is built by my friend and co-worker Eric.
He is not a big fun of computers, so I will post some pics on Monday.
In the mean time you can ask me about small ones.
Hi, and welcome here. I'm sorry for the wrong guess . I just guessed that the bigger orithopter is your design as well. It's seams Eric is another professional whom isn't known to me.
However, impressive work for both of you.
Thanks in advance for posting any pictures related to your and Eric's designs -as closer views as better.
Is it from the same Eric? :
Eric's Ornithopter (4 min 5 sec)
seagull10 is offline Find More Posts by seagull10
Reply With Quote
Old Feb 07, 2014, 07:28 PM
Registered User
Joined Apr 2001
360 Posts
Great ornithopter, I wish we could get some close up pics of the working parts and some info on how to build it. I would . Love to build one.
Flyboy70 is offline Find More Posts by Flyboy70
Reply With Quote
Old Feb 08, 2014, 01:09 AM
Kjell Dahlberg
KJELL's Avatar
Mallorca Spain
Joined Nov 2005
1,048 Posts
It is interesting to se the take off.
KJELL is offline Find More Posts by KJELL
Reply With Quote
Old Feb 08, 2014, 02:29 AM
Registered User
Velko Velkov's Avatar
Joined Sep 2007
474 Posts
Quote:
Originally Posted by Patricia J B View Post
Very interesting, especially the larger one.
See the comments

66" and 16" Ornithopter flying together (0 min 26 sec)
Velko Velkov is offline Find More Posts by Velko Velkov
Reply With Quote
Old Feb 10, 2014, 01:09 PM
Registered User
Joined Feb 2014
15 Posts
Quote:
Originally Posted by seagull10 View Post
Hi, and welcome here.
You are welcome. I post here since 2004. This is second account due to oroginal email no longer available.

Quote:
Originally Posted by seagull10 View Post
Is it from the same Eric? :
Yes, this is the guy!
SingSoftKitty is offline Find More Posts by SingSoftKitty
Reply With Quote
Old Feb 11, 2014, 08:39 PM
Registered User
Joined May 2011
691 Posts
Quote:
Originally Posted by SingSoftKitty View Post
You are welcome. I post here since 2004. This is second account due to oroginal email no longer available.



Yes, this is the guy!
Thanks Dmitro!

There is my questions about Eric's ornithopter :

1. Since you mentioned that Eric have bigger ornithopter than this shown in the first video of this thread I wonder is this(the bigger one) ornithopter different than this shown in the last video I've posted here?
How many different models he have?

2. Is the servo (flapping stroke powering servo) modified for continues rotation?
Is its motor changed to brushless one?

Is the gear ratio was reduced?

Is the metal gears version of this servo was used ?

3. Since you mentioned that the articulation is passive I wonder which part of the wings is twisted by the additional two servos?

Where they are mounted?

How are they controlled if there is cyclic electronic control or just they(the servos) control the tension on some elastic elements ?

About your ornithopters I suppose there will be a lot of questions if you post some pictures. Also checked out all your YouTube videos (BTW Great job on the ornithopters thematic) and can tell you where the unusual noise of your car coming from and what the reason is - if you are sill interested

Thanks in advance for the answers !
seagull10 is offline Find More Posts by seagull10
Reply With Quote
Old Feb 12, 2014, 11:31 AM
Registered User
Velko Velkov's Avatar
Joined Sep 2007
474 Posts
Quote:
Originally Posted by seagull10 View Post
Thanks Dmitro!

There is my questions about Eric's ornithopter :

1. Since you mentioned that Eric have bigger ornithopter than this shown in the first video of this thread I wonder is this(the bigger one) ornithopter different than this shown in the last video I've posted here?
How many different models he have?

2. Is the servo (flapping stroke powering servo) modified for continues rotation?
Is its motor changed to brushless one?

Is the gear ratio was reduced?

Is the metal gears version of this servo was used ?

3. Since you mentioned that the articulation is passive I wonder which part of the wings is twisted by the additional two servos?

Where they are mounted?

How are they controlled if there is cyclic electronic control or just they(the servos) control the tension on some elastic elements ?


About your ornithopters I suppose there will be a lot of questions if you post some pictures. Also checked out all your YouTube videos (BTW Great job on the ornithopters thematic) and can tell you where the unusual noise of your car coming from and what the reason is - if you are sill interested

Thanks in advance for the answers !
Otto,

Very good questions !

Velko
Velko Velkov is offline Find More Posts by Velko Velkov
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion New RC servo driven ornithopter kit seagull10 Ornithopters 0 Feb 01, 2014 08:22 AM
Wanted Ornithopter, I need one. himeros Aircraft - Electric - Airplanes (FS/W) 0 Nov 20, 2013 04:52 PM
For Sale ATG L600-X4 + Servo Driven Gimbal omega20 Aircraft - Electric - Multirotor (FS/W) 0 Nov 05, 2013 10:25 PM
Mini-HowTo How to Perform a Chinese Weight Demonstration on a Servo Driven Tail Rotor i812 Micro Helis 5 Oct 02, 2013 03:08 AM
Help! I need a highly reduced servo driven feedscrew drive Roger Long DIY Electronics 2 Sep 29, 2013 07:06 PM