تماشای ویدئو Slider crank mechanism with satellite gear 2 از آی-ویدئو
Tooth number of red gear is double one of green gear.
The gears axle distance = crank length = R
The slider's stroke length = 4R
For details see:
http://meslab.org/mes/threads/16679-Tang-hanh-trinh-con-truot-cua-co-cau-tay-quay-thanh-truyen