>>2998366>If it's force of impact, something's wrong, since calculating impact of a piece of rattan wood that large moving at 160 kph gives me ~11 kilonewtons average impact force.>Variance from distance of impact (how much the spankee's cheeks are compressing under the cane)>If it's force of swing, this cane can carry a full person's weight, which sounds wrong, and means I need a motor strong enough to approach go-kart power.>Calculating force by velocity requires estimating time of acceleration, spanking porn has high variance and low accuracy from frame counting.>90 kg swing force would linearly accelerate to 160 kph in 0.014s, which is just under 1 frame for a 60 fps video. But additional swing time could accelerate faster, and that's not wanted.>Some existing machines use longer swings to build up speed, which makes hardware specs easier to manage, at the cost of that instant snapping motion (you can hear it coming.)>Depending on how much time to accelerate is allowed, needed torque for swinging that cane to 160 kph is 20 (quarter second swing) to 358 (0.014 second swing) newton-meters.>RPM speed of motor is actually easy, since making the tip of a 4' cane spin at 160 kph only requires ~6 rpm.>Motors tend to operate on a tradeoff between torque and RPMs, so this is really good.>Multiple motors can be combined to add their torques.>Find "planetary gear motors" advertise best torque-to-dollar ratio, giving more >20 Nm torque for ~$40All of this assumes I did my math right and none of my sources / vendors lied to me.
