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Join Honey for FREE at https://joinhoney.com/sciencegarage Honey's 10 million members have saved an average of $28.61 per month on sites like Amazon, eBay, AutoPartsWarehouse, TireRack, Walmart, Best Buy, Cabela's, and more. You’ve heard about gears, transmissions and dog boxes, but do you know why your car has Helical Gears and Race Cars have straight cut gears? What's the difference between helical and straight cut? You’re about to find out! It’s Science Garage! Bart teaches us how cars work by blowing stuff up and cutting things in half. It’s a science show for the car lover who’s easily bored. Join Bart as he explains the science behind everything automotive. This is cars down to the atom. This is Science Garage. Some of our best videos ever are coming out soon, stay tuned so you won't miss a thing! ►Subscribe here: http://bit.ly/1JQ3qvO Check out more Donut Media Videos: https://youtu.be/Pz8IGLgFE2s?list=PLF… Want a Donut shirt or sticker? Visit https://shop.donut.media/ Like us on Facebook: https://www.facebook.com/donutmedia/ Click here if you want to learn more about Donut Media: http://www.donut.media/