Homemade elevator from new motor system

.:John:.

Hey, I came up with a nice idea for this new motor system. Use a thin rope and a basket and attach to the wheel. Taa Daa! Instant elevator. Make a false bottom with a pressure sensor and electronic delay. Do some fancy programming to have the motor either pull up or go down. Meaning you would need to find some way for the elevator to know if it were up or down. Use this one for your dog with no hind legs. Replace sensor with a simple switch and use as a laundry basket. If you have a homemade robot this could be used to get it from one floor to another. Just replace pressure sensor with infrared receiver and wire up robot with a transmitter. Voila!

Whelzorn

if you've got an empty elevator shaft in your house to build this in, it's a fantastic idea.

Franklin

Yes, we're out here. Don't yell (CAPS) we can hear you but have nothing to say. Why not post something more interesting?

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- Stephen

LoopyByteloose

First of all, rope is no good. A standard elevator has at least 3 if not 5 redundant cables that can each individually handle the full load. I suspect that some of the reason is for greater pulley friction as slippage can waste a lot of power.

Second, gravity provides you with economy and safety. A standard elevator has a ballast weight to offset most of the load. The ballast is at least equal to the dead weight of the cab and may even be a bit more so that a small motor can drive the whole device up and down with much less power consumption. And in the even of failure, the machine is effectively weighing very little - so braking doesn't have to be huge.

Thirdly, elevators are serious business, unlike dumb waiters and laundry chutes. You have to consider what will happen if twelve teenagers suddenly decide to crowd into the space intended for 3 adult passengers. So, some system to prevent movement when overloaded should be provided.

Forthly, elevators get stuck. So provide an alarm bell.

I haven't gotten to doors, but I think you begin to see why a regular elevator can cost $30,000 USD or more per floor.

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"Everything in the world is purchased by labour; and our passions are the only causes of labor." -- David·Hume (1711-76)········

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.:John:.

Uh Kramer. Did you even see my first post? I meant a small elevator