Vekoma Giant Inverted Boomerang - K'nex Roller Coaster 

Very satisfying build time laps!

Love the stop motion! The coaster is amazing too!

dude I could NEVER do a part by part time lapse lmao. thats so impressive

Your builds literally get better everytime!

That is Cool build. I did built this before with cross ties & Tubing Track 👍🏻

awesome work just a tip though. try to make the loop more teardrop and clothoid

Awesome I wish I can make things like that without Insrucions

I wish the structure wasn't so dense, maybe look into tube supports? other then that great video

So underrated!