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Originally Posted by alexander
Oh please, how much more fun is it to design and build a rotary engine yourself, versus hacking up a perfectly fine air tool. Also with a rotary engine, there is nearly any vibration, if any at all, it's not your typical piston air engine...
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Besides the fact that most air tools are EXTREMELY inefficient
Bear in mind that an air powered die grinder which has at best the same power as a Dremmel tool or a cheapy drill motor requires a minimum of a 1hp motor driven compressor just to run it in short bursts. So wastefull.... Much better to design your own.
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(at 4500psi, you dont need a hell of a lot of air to drive it)
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It may not seem like much but 4CFM at 4500psi is a hell of a lot more than 4CFM at say 10psi...
(course I fixed that problem here, my die grinder has a 48cc trimmer engine
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