How to make car jack||rc jack||mechanical jack||koshish all time

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Koshish all time,hi let's see How to make car jack||rc jack||mechanical jack||koshish all time
Let's make jack model and try to make car jack car lift, mechanical jack, hydraulic jack.its a dc jack . it's a mechanical project or science project too.we use a reduction gear box and a linear actuator with cordon shaft which have universal coupling.This is also known as four way joint, universal joint and cordon shaft.i have used dc motor and a remote control circuit,this is a prototype of big heavy weight lift jack.which is control by 4.5v battery.its design is simple and copy of original one.so make it simple and make it working.