Buy it.
look around on youtube, plenty there. giant drops, drop towers.micro and standard knex
To build a knex machine, you need to use chain lift. Both gears are a botten and a top of the tower. Use any of these elements anywere you want!
KNEX - FM - was created in 1991.
Yes, knex roller coaster sets come with instructions to build the model in the picture and sometimes even other models. Most of the instructions are also available on-line as PDFs for download.
KNEX-LP was created on 1997-10-16.
Find one you like, type in on comp. Look up and go to old knex website.
Knex offers a wide selection of toys from insects to buildings. Knex is kid-friendly and the snap together blocks are something that kids will spend hours playing with.
Well as far as I know there isn't one but you can build one but build it out of cheap materials like Knex or something then move to metal then te full thing
Not a clue
Because no one know about electronic computer
you might want to use knex if you want to build a model rollercoaster. the kits usually range from 40 to 50 dollars