Mr. Slinky Assembly Manual
Instructions
What’s in the Box
Your Mr. Slinky kit is organized into eight specialized modules to streamline the assembly process:
- Idler Roller (Bottom): The lower guidance system.
- Steps & Cones: The individual walking elements that form the core of the staircase.
- Main Chassis: The structural frame including legs and stand base beams.
- Drive Roller (Top): The powered upper roller featuring the main 45-tooth spur gear.
- Track Assembly: The complete set of angle decks and hardware that creates the smooth loop for the Slinky.
- Motor Set: Includes the geared motor, custom holder, and 28-tooth spur gear.
- Control & Power: Features a PWM regulator for speed control, a power adapter, and all necessary cabling for a plug-and-play experience.
- Side Guide: Precision-aligned guide with magnets.
01 - Idler Roller
The Idler Roller is the bottom wheel of the staircase. The wheel consists of two main parts: one side is designed for screws, while the other side features pockets where the nuts fit perfectly.
02 - Steps & Cones
The Steps & Cones module contains the individual walking elements that form the core of the staircase. These are the steps the Slinky actually "walks" on as they move through the loop. Assembly is straightforward: simply screw the cone to the step.
03 - Main Chassis
The Main Chassis is the structural backbone of Mr. Slinky. It consists of side beams, stabilizing spacers, and legs that set the staircase at the perfect angle (short legs in the front, long legs in the rear).
Assembly Strategy: The "Split Build"
To make the installation of the internal rollers possible, we will first assemble the right and left sides of the frame separately.
"Right Side" is defined as the side on your right when looking at the staircase from the front/bottom.
Step 1: The Right Side
Attach the Stand Leg - Long (Rear) and Stand Leg - Short (Front) to the Beam Gears V2. Attach the Stand Base Beam to connect the bottom of the front and rear legs. Install all Beam Spacers (long and short) onto this right-side assembly. These will act as the bridge to the other side later.
Step 2: The Left Side
Repeat the leg and base beam assembly for the left side using the Beam Gears V2 (Mirror). Important: Do not attach the left side to the spacers yet! Keep it separate. We need the frame open to insert the rollers in the next step.
04 - Drive Roller
The Drive Roller is the powered upper wheel of the staircase. It transfers the torque from the motor to the staircase loop. While it is mechanically very similar to the Idler Roller (01), this module includes the main 45-tooth Drive Gear for motor engagement.
The assembly process is nearly identical to "Module 01 - Idler Roller". All previous warnings regarding Square Nuts (pressing them all the way down) and Spacers (not mixing up side vs. center spacers) apply here as well.
Important (The Difference): Instead of having bearing setups on both sides, this module features the Drive Gear 45t on one side (specifically the Wheel V2 - Screw Side). On the opposite side (Wheel V2 - Nut Side), the bearing assembly remains the same as in Module 01.
Do not screw the Drive Gear onto the roller yet! The gear must be attached only after the Drive Roller is placed into the Main Chassis structure. Keep the gear and M3x25 screw ready; we will install them once the roller is seated in the chassis.
05 - Track Assembly
The Track Assembly is the flexible backbone of the staircase. In this stage, you will combine the tracks and the stairs into one continuous strip.
The track is built by alternating the components: Track Link → Track Deck → Track Link. As you build the track, attach the Steps & Cones from Module 02 directly onto each Track Deck. This creates a complete walking surface section before it is mounted on the chassis.
Important: Keep the completed track as one long, open "belt." Do not connect the two ends together yet. The final connection will be made with screws only after the track is properly seated on the Main Chassis and wrapped around the rollers.
06 - ...
07 - Motor Set
The Motor Set is the powerhouse of Mr. Slinky. To ensure a smooth building experience, the motor module is provided pre-assembled and pre-soldered. Your task is to mount it to the frame and ensure proper gear engagement.
Use the 8x M3x20 screws and 8x M3 square nuts to mount the entire Motor Module onto the Main Chassis.
Slide the Spur Gear (28 teeth) onto the motor shaft. Position it so that it will align and mesh perfectly with the 45-tooth gear on the Drive Roller once the module is attached to the frame.
Use the small M2 screw on the gear to secure it to the motor shaft. Warning: Tighten it very gently; it only needs to be snug enough to prevent the gear from slipping.