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Motors question

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buildingmotors:

--- Quote from: bfauska on March 23, 2015, 02:53:30 pm ---I don't know how small they get but in my work when I need a motor that performs this way I purchase a "brake motor" they are what DaOldMan and lilshawn are describing. I just thought knowing the common term may help your search. I use them starting at 2hp so a bit bigger than you're looking for with a 20# load (unless you're moving it really quickly), but I suspect they come in smaller packages.

--- End quote ---

Thank you.  I was actually afraid that they would all be huge, but if they start at 2hp, then i should be able to find one right where I need.  And speed is not an issue, as long as it reaches its destination, then im not going to complain.  Thank you again.

DaOld Man:
You know, a motor with a screw gear box on it would be very hard to turn from the output end, possibly even to the point of breaking before it will turn.
But the speed would be quite a bit slower than the motor RPM.

I have used a wind shield wiper type motor on my rotating monitor (as have others too), and if what you are wanting to move doesn't have to be real fast, you might want to look into that type motor.
They are easy to find, only require 12 volts DC at about 2- 5 amps.
If you don't need to vary the speed, you can use relays to turn the motor on and off and reverse it. (See the thread in this forum that attempts to explain drives.)
Here are some motors to give you some ideas:

http://www.allelectronics.com/make-a-store/category/400400/motors/dc-gear-motors/1.html

Good luck with your project, and let us know what you decide to use.

buildingmotors:

--- Quote from: DaOld Man on March 23, 2015, 10:03:16 pm ---You know, a motor with a screw gear box on it would be very hard to turn from the output end, possibly even to the point of breaking before it will turn.
But the speed would be quite a bit slower than the motor RPM.

I have used a wind shield wiper type motor on my rotating monitor (as have others too), and if what you are wanting to move doesn't have to be real fast, you might want to look into that type motor.
They are easy to find, only require 12 volts DC at about 2- 5 amps.
If you don't need to vary the speed, you can use relays to turn the motor on and off and reverse it. (See the thread in this forum that attempts to explain drives.)
Here are some motors to give you some ideas:

http://www.allelectronics.com/make-a-store/category/400400/motors/dc-gear-motors/1.html

Good luck with your project, and let us know what you decide to use.

--- End quote ---

Those actually look really good.  I was looking into a normal gearbox on the same idea that it would be harder for the output to push back, but 17 pounds is quite amount of weight for a small motor.  But your idea sounds like it would almost garuantee no pushback.  Honestly, I wouldn't know until I physically had it, but it seems like a worth while investment.  I will grab one and let you know how it works out.  And the speed shouldnt be an issue, it only has to travel about 20" and as long as it doesnt take several minutes, I think i will survive :D, thank you.

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