[Lab] human powered art
Darcy Whyte
darcy at siteware.com
Wed Jan 26 12:19:20 EST 2011
I was thinking of getting the 350 or 500 W. The links are here:
http://mambohead.com/2011/01/using-a-stepper-motor-as-a-generator/
This one looks pretty sexy:
http://www.allelectronics.com/index.php?page=item&id=DCM-1350&extra=a:2:{i:0;s:40:%2203823345592a403b2f4a37a59384e7ab28f02be1%22;i:1;s:0:%22%22;}
I think a bicycle thing would have to have an adjustable seat and handlebar.
But some of the other hair brained schemes might be one-size fits all
On Wed, Jan 26, 2011 at 11:41 AM, Richard Guy Briggs <rgb at tricolour.net>wrote:
> On Wed, Jan 26, 2011 at 11:12:50AM -0500, Darcy Whyte wrote:
> > Sorry I was up to my eyeballs for a few days there...
> >
> > It's looking like it will be mail order to get a go-kart motor or two.
> Let
> > me know if you want one or two and I'll up the order.
>
> What models are you getting and how many?
>
> > Your right, a bicycle configuration is probably the easiest. I was
> thinking
> > of the size though. I'll try a few different things and see what emerges.
>
> Hmmm, making it easily adjustable is an important point.
>
> > On Tue, Jan 25, 2011 at 12:25 AM, Richard Guy Briggs <rgb at tricolour.net
> >wrote:
> > > On Mon, Jan 17, 2011 at 12:20:02PM -0500, Darcy Whyte wrote:
> > > > Hi Richard,
> > >
> > > Hi Darcy,
> > >
> > > > What it looks like though is that those go-kart motors are
> attractive.
> > > Also
> > > > the home made generators (parts from volvo and such) look good but I
> > > think
> > > > the go-kart is a little more accessible to me at the moment so I will
> > > > probably look at that.
> > > >
> > > > Plus if I ever get the urge to make a motorized scooter I'd have the
> > > motor
> > > > on hand.
> > > >
> > > > I'm pretty sure the steppers are too small (and the go-kart industry
> is
> > > > price friendly as it's also a scaled up industry).
> > > >
> > > > Not only that you get DC out of the go-kart motors which might be
> more
> > > > handy.
> > > >
> > > > I was at Princes Auto yesterday and they didn't have anything like
> it
> > > > floating around.
> > >
> > > Hmmm, I had wondered if they might have anything like it...
> > >
> > > > So I will start a prototype using one of those motors.
> > > >
> > > > I guess once I get one or two of those motors I can start to look at
> > > > different ways to drive it with human power.
> > >
> > > So do you have a local source for them yet? Or are you going to mail
> > > order them? I'd be curious to grab a couple if you do.
> > >
> > > > -user pushes a wheel around
> > > > -user rows
> > > > -user pedals
> > > > -user wears a harness and pulls cable off a spool to create rotary
> motion
> > > > -user wears a harness and does squats to pull row spool. (two people
> > > could
> > > > do a teeter totter action like that
> > > > -user hand cranks
> > > > -user pulls a rope like a tug-a-war
> > > >
> > > > Obviously to get the big power we're going to need the legs in on
> this.
> > >
> > > I suspect that something recumbent with pedals is going to be the most
> > > efficient and comfortable.
> > >
> > > > On Sun, Jan 16, 2011 at 8:38 PM, Richard Guy Briggs <
> rgb at tricolour.net
> > > >wrote:
> > > > > On Sat, Jan 15, 2011 at 06:12:24PM -0500, Richard Guy Briggs wrote:
> > > > > > On Fri, Jan 14, 2011 at 07:14:29AM -0500, Darcy Whyte wrote:
> > > > > > > I would like to make a human powered generator for an art
> project.
> > > > >
> > > > > > > I am curious if a couple of NEMA 34 motors is large enough to
> > > capture
> > > > > all
> > > > > > > the power that a human can generate.
> > > > >
> > > > > > Do you have a link for your NEMA 34 motor specs? I've seen
> anywhere
> > > > > > from 50W up to 500, so it sounds like those might work!
> > > > >
> > > > > > > I'm suspecting that a stepper motor is a good candidate to make
> the
> > > > > > > electricity. I think the first part of the project is to make
> up
> > > some
> > > > > BOMs
> > > > > > > that show what motor to use, the RPM that it would require and
> > > parts
> > > > > for a
> > > > > > > rectifier and whatever else is necessary to operate in these
> > > > > applications.
> > > > > >
> > > > > > I've got lots of small ones, so I can try some tests and see. I
> > > > > > wouldn't have thought they would work because the rotor I thought
> was
> > > > > > unmagnetized steel.
> > > > >
> > > > > I now understand that NEMA 34 is a mounting plate standard.
> > > > >
> > > > > So, looking through my box, I have one NEMA 34 motor and four NEMA
> 23,
> > > > > plus about eight NEMA 17 or smaller as well as a bunch of other
> smaller
> > > > > assorted steppers.
> > > > >
> > > > > The NEMA 34 is a Matsushita 1HHS-486CS, 6V, 2.2ohm, 1.8 deg/step
> 6-wire
> > > > > unipolar. I can't find any info about it on the net. My guess is
> it
> > > > > its max rating is around 36W, maybe double that depending on how
> they
> > > > > rate them.
> > > > >
> > > > > Hooking up a bridge rectifier across each coil, using a cordless
> drill,
> > > > > I was able to get .5A short circuit and beyond 12v out of it open
> > > > > circuit. Using various loads, I think I was able to get as much as
> 12W
> > > > > out of it. It wasn't exhaustive, but I think that was somewhere
> near
> > > > > the peak. I may have been able to get more with a higher speed.
> > > > >
> > > > > One of the NEMA 23 motors is a Matsushita 1HHS-457CH 24V, 26ohm,
> > > > > 1.8deg/step 6-wire unipolar. Didn't find anything on it either.
> Again
> > > > > my guess is 48 or maybe 96W.
> > > > >
> > > > > Short: 0.16A, Open: 170V Most I was able to get was about 8 Watts
> out
> > > > > of it.
> > > > >
> > > > > These motors look pretty underpowered compared with some of the
> specs
> > > > > I've seen on the net... This isn't surprising since I think these
> are
> > > > > 20 years old.
> > > > >
> > > > > Darcy, do you have any part numbers or specs for your steppers?
> > > > >
> > > > > > slainte mhath, RGB
> > > > >
> > > > > slainte mhath, RGB
> > >
> > > slainte mhath, RGB
>
> slainte mhath, RGB
>
> --
> Richard Guy Briggs -- ~\ -- ~\ <
> hpv.tricolour.net>
> <www.TriColour.net> -- \___ o \@ @ Ride yer
> bike!
> Ottawa, ON, CANADA -- Lo_>__M__\\/\%__\\/\%
> Vote! -- <greenparty.ca
> >_____GTVS6#790__(*)__(*)________(*)(*)_________________
>
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