Attraction Source Forum

Posted: **Thu Dec 06, 2018 7:29 am**

Just came across this fantastic creation. Someone has adapted a K'Nex rollercoaster to make it multi-launch.
From the Reddit thread:

The trains have magnets underneath them which trigger reed switches in the track, which signal the program in the microcontroller to move on to the next step. I try and upload the code in the morning because it's late here in the UK.

The motors are third party and aren't Knex pieces in a u way shape or form. They take 24v and draw about 2.6A (all the power pack can provide). I can't remember the rpm or torque provided, but its very good. I'll dig up the data sheets in the morning.

Looks amazing!

Posted: **Thu Dec 06, 2018 4:59 pm**

They are a nightmare to build, and even then they don't work!

Posted: **Thu Dec 06, 2018 10:56 pm**

I just remember the blisters from making the original one. 8 hours and it was nearly the length of the room.

But yep, did require frequent adjustments to the cars to stop it derailing.

Posted: **Fri Dec 07, 2018 4:25 pm**

I used to have a good collection of serpent screamer Rollercoater K'nex, I build some layouts, but sold all mine to purchase the Faller fairground model kits.

There are some great K'nex coaster video builds on Youtube

Attraction Source Forum

Launched K'Nex Rollercoaster

Launched K'Nex Rollercoaster

Re: Launched K'Nex Rollercoaster

Re: Launched K'Nex Rollercoaster

Re: Launched K'Nex Rollercoaster