Hack

Servo hacked linear actuator

[AntonB] has modified a servo into a powerful linear actuator (think: changing rotational motion into linear motion). The process is simple enough, modify a servo for continuous rotation and then add the custom built actuating shaft. You do of course lose the precision of the servo, but a small price to pay to be able to lift ~20 pounds straight up. Inspiration for such a cheap solution came from his Planetary Surface Exploration Rover. Check out a video of both after the break.
[Thanks Eric]



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Automotive

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Automotive

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What is a -stroke diesel engine?As the name suggests, these engines work on reciprocatingactions of pistons. One stroke means one linear motion of thepiston in one direction. When the piston moves in the oppositedirection, that is counted as another stroke.For a -stroke engine, the piston has to move up, then down,then up again, and then down again to complete one cycle of theengine. In that stroke of the piston, the crankshaft will haveturned revolutions.The strokes of the piston is to complete stages of thecombustion cycle. As you might have known, in order for a fireor explosion to occur to…


[ Read the rest of the story in the original article... ]

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