Subject:
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Re: Dual Hex small piston compressor (repost)
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Newsgroups:
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lugnet.technic, lugnet.robotics
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Date:
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Sat, 20 Aug 2005 02:09:48 GMT
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Viewed:
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290 times
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In lugnet.technic, Steve Lane wrote:
> In lugnet.technic, Kevin L. Clague wrote:
> > After some research, I proved to myself that small pneumatic pumps are best for
> > motorized compressors (what a suprise, Dr. Soh was right ;^) For those who are
> > unaware, Dr Soh, is a long time LEGO pneumatic enthusiast, who is particularly
> > interested in pneumatic engines. He has a great website here:
> > http://www.fifth-r.com/cssoh1/contents.htm When I first got started on
> > pneumatics, I learned much about pneumatics from his site.
> >
> > Given that so many of my creations are pneumatic, I need a good compressor.
> > Here is my best so far. Two battery boxes, two RC racer motors, and 12 small
> > pneumatic pumps arranged in two radial six piston compressors.
> >
> > This made an appearance at BrickFest2004 but was not in working condition because
> > of broken hoses.
>
> Hi Kevin
>
> I've just been studying the pictures again and they gave rise to a few thoughts.
> The broken hoses, I'm assuming you mean they pop off rather than suffer fatigue
> cracking, so is this because the pressure generated inside can become so great
> it pops a joint or is it due to the actual movement back and forth of the
> compressor bodies waggling the joints loose? I think that the shortness of the
> lengths of hose must make them relatively inflexible, possibly exacerbating the
> waggling problem. I've always thought that some of the energy is wasted bending
> the hoses that could be used to compress more air, and I suppose the more rigid
> the pipe the more energy would be wasted.
>
> Steve
Hi Steve,
I literally mean broken. I changed some of the beams to get a different
color, and in thbe process created a hose cutter (not unlike a paper cutter) and
unwittingly sliced hoses.
Once fixed, I never had problems with hoses popping off. I made sure to use new
hose.
Kevin
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