thanks for the help...i figured it out

Reloadron

Well-Known Member

Most Helpful Member

• Feb 16, 2015

• #21

Sorry, no photo op today as I can't find the little servo motor I was going to use.

Anyway, I suggest a servo motor or as Jim B suggested get a motor (gear head motor for reduced RPM and torque) and run it like a piston on a crankshaft. A Google of Robotic Motors should be a good start. Robotic sites should give you more ideas. That would be my thinking on how to go about it anyway.

Ron

 

audioguru

Well-Known Member

Most Helpful Member

• Feb 16, 2015

• #22

I'm scared of dragons!

Air Hogs have a toy flying bird Firebird that flaps its wings. Copy it larger using a windshield wiper motor and gears.

 

Reloadron

Well-Known Member

Most Helpful Member

• Feb 16, 2015

• #23

audioguru said:

I'm scared of dragons!

Air Hogs have a toy flying bird Firebird that flaps its wings. Copy it larger using a windshield wiper motor and gears.

Click to expand...

Not me, I am not worried about flying dragons. Anti-Aircraft guns! On a side note those geared wiper motors produce one heck of a lot of torque.

Ron

 

Musicmanager

Well-Known Member

• Feb 16, 2015

• #24

I'm scared of Mothers in Law ! They produce one heck of a lot of talk too !!

 

cowboybob

Well-Known Member

Most Helpful Member

• Feb 16, 2015

• #25

Keep hitting Play/Pause to re-view. If allowed to play out, other reciprocating examples are offered.

 

audioguru

Well-Known Member

Most Helpful Member

• Feb 16, 2015

• #26

Here is a wing flapping mechanism with hinged "elbows": I flew like that when I was younger.

 

JimB

Super Moderator

Most Helpful Member

• Feb 16, 2015

• #27

Have a look at the attachment, a four bar linkage.

Crank #1 is rotated by the motor.
A linking bar connects crank#1 to crank#2.
Crank #2 pivots about the rod at the bottom end.
The distance Radius1 is smaller that Radius2.

As the motor turns, crank2 will move in an oscillating angular motion about it pivot point.
Anything attached to crank2 near the pivot point will flap up and down.

JimB