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Posted by PeterD on April 4, 2008, 6:58 pm
wrote:
>
>I'm thinking about building a homemade rig for small batch concrete jobs-
>something that would rotate a 5-gallon bucket would be fine (nice and
>compact, and if needed I can just dump the bucket and start mixing the next
>bucket). I particularly like the idea of an easy cleanup, where I can just
>rinse the bucket instead of hauling a whole mixing rig to a water source.
>
>Where I'm stuck is figuring out what type of motor I should use; I want
>something at least 1/3hp and running at (variable) 0-50rpm.
>
>Has anyone else built a DIY concrete rig, and if so, any suggestions on
>what motor to use?
>
>Thanks!
>Keith
I won't get into your project itself, just your question about the
motor:
Variable speed would be complex, you'll need a DC motor with a DC
motor controller.
Let's say you are really handy...
Find an old treadmill, the bigger teh better, that still has a good
motor and controller... Those motors are usualy 90 VDC (a standard
voltage for a DC motor of any size) and the controller will allow
variable speeds without any muss or fuss. See where I'm headed?
The alternative is to buy some new (or surplus) stuff, but that will
be expensive...
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