It doesn't have the looks but gets the job done. I used a pulley system and a lot of gear wheels. (I didn't use to much gear wheels otherwise it would go very slow.) On a simple electric engine. Sorry but i am not going to post this, trust me making a crane like this is much more fun by your own. It took me to make it about 8 hours to get it up to 3kg.
Sorry but i already took it apart and i used a nylon string. I axially don't make those pictures so you all can figure it out your self and make it even better.
Nice job on the pulley system. Pictures of the top of the crane showing the pulleys would be nice, maybe you can add those (unless you took it apart already). What kind of string/cable/wire did you use?
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Wow Never knew knex could do that! I knew Legos could do that but not Knex!!
I Have The ACTUAL Set For a knex crane :)
BUT
It can lift a knex ball,
it lowers the box, and picks up the ball, all by itself :)
its weak, but very fancy!