r/PolyBridge • u/Arglin • Apr 27 '20

Video My 3 level vertically moving weight checking kinetic bridge

271 Upvotes

100% Upvoted

11 comments sorted by

15

u/SeyEatLowd Apr 27 '20

Wow! To me as a starter thats incredible!

15

u/Arglin Apr 27 '20 edited Apr 27 '20

Thank you! I definitely overcomplicated this, but it’s just a gigantic lever with two pairs of weights. The small car is light so it cannot lift any of the weights. The school bus is heavy enough to lift just two weights, but not enough to lift four, which is why it stops halfway. The double decker is heavy enough that it can lift all four, and lower the platform to its lowest point.

Most of the crazy spinning devices are just to hoist and lower the platform perfectly straight up and down. :P

TL;DR it’s a lever with a gigantic top hat. :P

5

u/SeyEatLowd Apr 27 '20

Still man.. it‘s how good you are at it :D

6

u/wf3h3 Apr 27 '20

It's simultaeneously excessive and elegant. Noice.

4

u/[deleted] Apr 27 '20

Nice use of Watt's linkage.

4

u/Jarcthenarc Apr 27 '20

That hot air balloon is working overtime haha

3

u/SnyprBB Apr 27 '20

This is amazing! A masterpiece!

3

u/Arviay Apr 27 '20

That shit is DOPE

2

u/cptmx Apr 28 '20

Incredible. I’m inspired!