Hi everyone.
This is another version of a stepper lift. As you can see from the video and pictures it is quite tall and can be made even taller because there is not a lot of friction. I used two regular knex motors to power this lift but one electric plug-in knex motor should do the job, but you'll have to change the gears around. Enjoy the video.

Parts List

All parts are labeled in there classic colors.

Rods

green - 76
white - 116
blue - 200
yellow - 128
red - 165
grey - 53
tan roller coaster - 1
large bendy - 5*

Connectors

grey - 65
light grey - 50
orange - 34
red - 54
green - 87
yellow - 85
white - 21
purple locking - 120
blue locking - 47
orange roller coaster - 52

Wheels and Tires

thin small wheel - 1
thin medium wheels - 14
thin small tire - 1

Gears

small gears - 2
medium gears - 13
large gear - 1

Panels

small triangle panels - 5

Clips and Spacers

Y-clips - 95*
blue clips - 12
tan locking clips - 12
roller coaster clips - 2*
washers - 2
blue spacers - 83*
silver spacers - 34

Miscellaneous

blue hinge halves - 2
motors - 2 regular or 1 plug-in
chain links - 134
roller coaster track length - 2 pieces 80"(2m) or 4 pieces 37"(94cm)

*The large bendy rods are optional.
*You will not need to use a lot of Y-clips if you are using thick roller coaster track.
*You might need extra roller coaster clips at the top part of the steppers.
*You will not need to use a lot of blue spacers if you are using thick roller coaster track.

Step 1: The Base

For this step you will be building the base and a bit of the gears and entrance.

Step 2: The Entrance

Step 3: The Tower

Step 4: The Wide Steppers

The steppers themselves were kind of hard to photograph, so be sure to read the image notes. I broke the steppers into two parts, the lower and the upper. The lower part uses 21 chain links and the upper uses 18.

Step 5: The Narrow Steppers

The narrow steppers are almost the same as the wide steppers, but narrower. I also broke them into to parts. This time though the lower part has 18 chain links and the upper part has 21 chain links.