Opposed Piston Engine: Apparently it can have better thermodynamic properties which leads to better fuel efficiency. There are a bunch of different tradeoffs with maintenance and engine size too, but it really depends on the specific applications

self reversing screw

1,200 points

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Spherical Geneva Drive - STEP / IGES,SOLIDWORKS - 3D CAD model - GrabCAD

550 points

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DIF_FER // an unpublished GIF, more than anything I was just trying to figure out how to model teeth profiles to a point I was happy with them

1,999 points

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joff-center-oined discs oscillate in a flat cage which has appendages, and fixed point leverage....Slicing Mechanism

1,097 points

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ODD_ENGINE01

2,900 points

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90 Degrees Uniform Motion Transmitter

8,896 points

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I can watch this all day

39,000 points

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19 Things That You'll Never See The Same Way Again

117 points

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David Tennant has the sexiest walk I've ever seen... Can he do nothing wrong???

1,301 points

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David Tennant Funny Face | David Tennant eyebrow raise

45 points

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Stop it, David. Just stop it. Just kidding. Never stop. GIF.

24 points

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David Tennant | 28 Ridiculously Hot Celebrities With Incredibly Cute Cats

2,000 points

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Danusia training a sideways side aerial (gif by allyoursecrets // She's amazing. The end.

6,200 points

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jack gilinsky imagines - Google Search

694 points

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Free Swimming Anime | Swimming Anime" debut is light on shirts, heavy on sexual tension

1,901 points

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El Secreto para enamorar a una mujer aunque la naturaleza no te haya beneficiado físicamente ⋮ Es la moda

1,500 points

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Lydia martin , lydia martin hair , lydia martin hairstyles , lydia martin style , lydia martin outfits , lydia martin outfit , lydia martin aesthetic , teen wolf , stydia , stiles and lydia

33 points

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Đổ mồ hôi là hoạt động rất tự nhiên của cơ thể nhưng với một số người đây lại là vấn đề khá đau đầu. Không ít người trong chúng ta vẫn thường than phiền vì mình bị ra quá nhiều mồ hôi hay cùng làm một công việc trong điều kiện như nhau nhưng vì sao mình lại đổ mồ hôi nhiều hơn những người... http://cogiao.us/2017/01/26/vi-sao-mot-so-nguoi-ra-nhieu-mo-hoi-hon-nguoi-khac-bat-

1 points

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dylan and tyler, haha gif

7,800 points

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[gif] yeah, I pin gifs of Louis saying "um". It's not my fault I do the things I do.

86 points

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