Pully size

[trickyrick]

I have a linear actuator that has a stroke of 18 inches. I need to double that with the use of pullies.
Not sure how to accomplish that.

[Jim Dawson]

https://www.pinterest.com/pin/672232681852220936/

Picture 2. Replace the weight with the linear actuator. If it moves 18'' the ''S'' will move 36 inches

[trickyrick]

Hey, that's perfect thanks.
I have a follow-up question
If I increased the size of the lower pully would that increase the speed of the top pully or just the distance the hook will move

[Jim Dawson]

Yes, the rotational speed of the top pulley would increase by the ratio of the pulley sizes.