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Old Feb 14, 2013, 09:43 AM
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Shafts
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Old Feb 14, 2013, 06:56 PM
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thanks for posting Otto its in favourites all the more sources for parts is always good i say regards Brian
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Old Feb 15, 2013, 07:55 PM
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Indonesia, East Java, Malang
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Hi Mr. Kakuta,,
I want to know how many flaps to produce certain lift force depend on load weight and wings area?
maybe you have the formulas?

contact: slachemburg@gmail.com
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Old Feb 15, 2013, 10:04 PM
K Kakuta
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Joined Aug 2006
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Originally Posted by Slachemburg View Post
Hi Mr. Kakuta,,
I want to know how many flaps to produce certain lift force depend on load weight and wings area?
maybe you have the formulas?

contact: slachemburg@gmail.com
I do not calculate.
I make ornithopter with the sense that experience finished.
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Old Feb 15, 2013, 10:37 PM
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Originally Posted by Kazu-kaku View Post
I do not calculate.
I make ornithopter with the sense that experience finished.
if I have 200g load, what is the minimum wingspan that I should build?
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Old Feb 15, 2013, 11:47 PM
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Originally Posted by Slachemburg View Post
if I have 200g load, what is the minimum wingspan that I should build?
that depends on many things stiffness of wing frme materials flex etc etc
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Old Feb 16, 2013, 02:20 AM
K Kakuta
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Originally Posted by Slachemburg View Post
if I have 200g load, what is the minimum wingspan that I should build?
200g: wing span 110-140cm (Ripstop or Orcon flim wing, Bird type ornithopter, normal flight, no acrobatic)
Motor like as AXI 2203, 2cell-3cell Lipo.
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Old Feb 16, 2013, 06:46 AM
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Originally Posted by therealthing691 View Post
that depends on many things stiffness of wing frme materials flex etc etc
ehmm, I will build an ornithopter from plywood for the frame and bamboo stick for the wing's frame..what's your opinion?
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Old Feb 16, 2013, 06:51 AM
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Originally Posted by Kazu-kaku View Post
200g: wing span 110-140cm (Ripstop or Orcon flim wing, Bird type ornithopter, normal flight, no acrobatic)
Motor like as AXI 2203, 2cell-3cell Lipo.
is that possible for articulated wings?
What's the differences between normal flight and acrobatic flight?
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Old Feb 16, 2013, 07:38 AM
K Kakuta
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Originally Posted by Slachemburg View Post
is that possible for articulated wings?
What's the differences between normal flight and acrobatic flight?
Flapping power : Acrobatic flight>Articulated wings>normal Flight (Horizontal flight and Gliding)
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Old Feb 16, 2013, 10:13 PM
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Originally Posted by Slachemburg View Post
ehmm, I will build an ornithopter from plywood for the frame and bamboo stick for the wing's frame..what's your opinion?
I think building frame from plywood and bamboo sticks will increase the weight.. At least use CF rod for the main spar...
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Old Feb 16, 2013, 11:06 PM
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Originally Posted by Slachemburg View Post
ehmm, I will build an ornithopter from plywood for the frame and bamboo stick for the wing's frame..what's your opinion?
anything is possible just research and built it. It is fun cheers Brian
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Old Feb 16, 2013, 11:32 PM
K Kakuta
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anything is possible just research and built it. It is fun cheers Brian
I think so, too. Try it.
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Old Feb 17, 2013, 01:33 AM
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Indonesia, East Java, Malang
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I think so, too. Try it.
okay thankyu, I want to show you my last work, I try to make festo smartbird, but it's failed.
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Old Feb 17, 2013, 03:24 AM
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okay thankyu, I want to show you my last work, I try to make festo smartbird, but it's failed.
Wow this looks good why it failed..? I am still under contruction of my bird.. No way to get proper gears here in india..
Your smart bird looks good try to make it fly..
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