Vertical Rear Wheel Position in Manual Wheelchairs This month, let's continue our focus on manual wheelchairs by looking at the effects of the vertical rear wheel position in manual wheelchairs. Both standard and folding wheelchairs allow for vertical positioning of the rear wheels. Positioning the rear wheel up or down the frame of a manual wheelchair will have effects on seat-to-floor height, orientation in space, and rear wheel access. 2014-03-26 Keep Reading