The stroke would ideally be around a foot long, frequency would ideally be around 16 rev/min. Force no more than 30 lbs.
Another option I was considering would be to use a linear actuator connected to some sort of device that will reverse polarity every 4 seconds or so in order to achieve this...
I need to purchase a device that will push something forward and backward continuously, in order to make wings flap like a bird. Linear actuators seem to be the right thing to buy, except these require pressing buttons to go forward and then back. What can I buy/what can I do that will allow a...