A regular stair lift consists of any chair that moves along a tune. The track is always mounted on the stair tread and not on the divider. An inclined one consists of a platform that moves along a track. Any size and weight considerations, the track is always mounted close to the wall. Also, the platform of a wheelchair unit is considerably larger in comparison with the seat of their conventional model therefore the stairway end up being wide. The Piper Super Cub, also since the PA-18 ...