Connected Arm Lift, Sandroknexmaster's Knex Lift.

About: My 3ds friend code is 0860-3914-2160 My 3ds xl friend code is 2294-3900-2732. If anyone has xbox live and playes gta 4, can we play together?
Hi this is my knex Connected arm lift ball machine lift which is used by Sandroknexmaster. I made this ball machine part because my previous knex Cleopatra ball machine broke in the process of fixing. This ball machine took approximately  2 hours to make without the parts for the project being found. So far it is my biggest and best knex model apart from my knex roller coaster.

Snadroknexmaster's first edition is here.


This ball machine element has 4 working arms for the knex balls to be transported up or down the lift. It is powered by a single knex motor and 2 gears at the bottom of the ball machine. The process of getting the knex balls from the lower arm to the top one can be made in roughly 15-20 seconds making it a fast machine, as well as being very strong. It also has a mechanism which makes a knex ball go onto the first knex arm when ready. This action can be performed only when the arm is parallel to where the knex ball is. This can be seen on the sixth and seventh picture with closer detail. the wheel is there to prevent the weight of the ball and the holding area form being in the low position. 


It is 152 cm / 60 inches  / 5 feet long and 87 cm / 34 inches tall.



    • Backyard Contest

      Backyard Contest
    • Fandom Contest

      Fandom Contest
    • 1 Hour Challenge

      1 Hour Challenge

    11 Discussions

    Actually... you build it from my instructions (thanks :p) but it's just the same you didn't change anything, why do you make an instructable for that?

    1 reply

    1 year ago

    I fail to see why this Instructable was made.

    knex akbar

    5 years ago on Introduction

    ''Hi this is my knex Connected arm lift ball machine lift which is used by Sandroknexmaster.'' but you didn't invent this.. and why did you make an instructable for something that already exists?