# Rack and Pinion: Increasing Linear Movement of Rack

I would like to know if there's a way to increase the linear travel of a rack relative to the rotation of the driven shaft, either through a gearing system or some other means?

• Just use a larger pinion. Aug 25, 2020 at 12:12
• I would do that, only I want to house it all within a confined space, hence the question. Aug 25, 2020 at 12:53
• I would do that, only I want to house it all within a confined space, hence the question. Your question is asking if there's a way to do it through a gearing system or some other means, and this is the only answer. Use a bigger gear. Length of travel on the rack must equal the arc length on the pinion. You change arc length of a circle by changing its radius or by changing the total rotation. Since you specify relative to the rotation of the driven shaft, the total rotation must stay the same, and so you're left only with changing the radius of the pinion. Aug 25, 2020 at 13:20
• Multistart threads on a rod Aug 25, 2020 at 14:52