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EruditioDeus -> RE: f*ucking machine diy (12/31/2004 6:34:55 AM)
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Well, I'll throw in my 2 cents on some design ideas.
I think you're overspeccing your motor requirements. 620 lbs of torque out of the gearbox is enough force to make a new orifice.
I'll reccomend to other alternative motor types that will be much lighter, cheaper, plenty strong, and safer as they are 12V DC.
My number 1 choice would be a wheel chair motor. Good torque, plenty of RPM. Not cheap unless you mug somebody for their wheel chair(for which you would surely burn in hell).
My number 2 choice would be a electric window motor. Cheap from an auto salvage yard. One for the rear indow of an SUV would be ideal as they are a bit beefier than the ones for you regular car door windows.
I've used both types of motors for animating stuff on floats and theater sets. Other advantages are the option of battery usage(i.e. car batteries)or using a AC/DC tansformer for powering it(ideally set it up for both) and portability compared to that 62# monster(not counting that gearbox weight either I imagine).
And a note of warning-with the potential power that monster you're planning will have, DO NOT use a rheostat type voltage regulator, a digital one with overload protection is vastly preferrable. Rheostats are fine for DC apps, and non-precision AC appliances, but just one instance of rheostat arc, which may only last a fraction of a second, could send a very powerful surge of mechanical enrgy into the nether regions of your impalee. And a non-planned 620 ft/lbs of thrust would be like catching a rhino horn in the crotch.
Good luck and keep us posted. I may actually get off my ass and put together one too, I think I even have a left over motor from the last set I did....
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