Posted by z on June 4, 2009, 3:57 pm
as for a tap Bryan from theepicenter.com replies:
As far as the taps goes, we had to have that custom made at a tool and die
shop. It think it cost us around $50. At that kind of cost, I just don't
think a normal guy would want one.
Bryan
Posted by Ulysses on June 5, 2009, 4:05 pm
> >
> >> The epicenter of Eugene has a lot of shaft couplers and pully kits
> >> etc you might want to check out
> >>
> >> http://theepicenter.com/power_sources_generators_and_batteries.html
> >>
> >> I got some stuff for the hydro there.. good people.
> >
> > Thanks z. That's no doubt the place where I first got info on the
> > "homemade generator" as they call it. I looked at their couplers
> > recently but I'll look again. I have some doubts about the LoveJoy
> > couplers for my purposes just as Neon John pointed out.
> >
> > Which place did you get your PMA from, the Blue Wind place or the
> > hydrogen appliance place? I'm going to ask them if they make a PMA
> > specifically designed to go directly onto an engine shaft, either
> > tapered or keyed.
And Wind Blue is a much better name too. What's a hydrogen appliance
anyway? A stove that uses hydrogen to cook? Someone here was criticizing
the construction of one of those PMAs a couple years back so it much have
been the hydrogen ones.
> I went with windblue. At the time they were $00 w/free shipping and I'd
> read better reviews of windblue. Dealing with them was great .. and the
> sucker keeps on spinning so i've got no complaints.
> I don't know if they've got anything but the delco SI type gen. Could
> always ask. You know i get questions from the site about where to find a
> tap that fits that idiotic thread pitch for the delco/GM alternator and I
> never have found one. One college student was doing a thesis (building a
> little power plant) and was looking. I told him to let me know if he
> finds one. The upshot is I asked wind blue to try to find one and sell
> it on their site -- so far not I guess. Seems rediculous that so many
> home brew power folk use those type gens but the taps are seemingly non-
> existent. The Epicenter guys have to get those direct drive shaft
> couplers machined somewhere that has the pitch figured out. Frustrating
I was trying to determine what it was yesterday. I sure *seemed* like it
was an odd thread. Now I know it wasn't just me ;-)
> good luck
> -zachary
Posted by Neon John on May 30, 2009, 1:30 am
On Fri, 29 May 2009 08:06:06 -0700, "Ulysses"
>Hi guys. I attached the coils and rotor (the entire PMA) from a Honda
>eu2000 generator to a 4 HP engine--direct drive, just like it originally was
>on it's original engine. This is a 3-phase alternator in a Y configuration
>so I connected two diodes in series to each output and connected them in
>parallel with each of three outputs attached between each pair of diodes. I
>attached a 200 volt electrolytic capacitor, somewhere in the 600 uF range.
>I attached a voltmeter set for the highest voltage. I started the engine at
>a slow speed and the voltage reading started out at about 190 VDC and
>quickly climbed until it was over 600 and I shut it down. Things started
>smoking.
This sounds about right. Except for the smoke, of course.
John
Posted by Don Young on May 30, 2009, 2:19 am
> On Fri, 29 May 2009 08:06:06 -0700, "Ulysses"
>>Hi guys. I attached the coils and rotor (the entire PMA) from a Honda
>>eu2000 generator to a 4 HP engine--direct drive, just like it originally
>>was
>>on it's original engine. This is a 3-phase alternator in a Y
>>configuration
>>so I connected two diodes in series to each output and connected them in
>>parallel with each of three outputs attached between each pair of diodes.
>>I
>>attached a 200 volt electrolytic capacitor, somewhere in the 600 uF range.
>>I attached a voltmeter set for the highest voltage. I started the engine
>>at
>>a slow speed and the voltage reading started out at about 190 VDC and
>>quickly climbed until it was over 600 and I shut it down. Things started
>>smoking.
> This sounds about right. Except for the smoke, of course.
> John
And the excessive load on the engine with no electrical load connected.
Don Young
Posted by Ulysses on May 30, 2009, 2:46 pm
> > On Fri, 29 May 2009 08:06:06 -0700, "Ulysses"
> >
> >>Hi guys. I attached the coils and rotor (the entire PMA) from a Honda
> >>eu2000 generator to a 4 HP engine--direct drive, just like it originally
> >>was
> >>on it's original engine. This is a 3-phase alternator in a Y
> >>configuration
> >>so I connected two diodes in series to each output and connected them in
> >>parallel with each of three outputs attached between each pair of
diodes.
> >>I
> >>attached a 200 volt electrolytic capacitor, somewhere in the 600 uF
range.
> >>I attached a voltmeter set for the highest voltage. I started the
engine
> >>at
> >>a slow speed and the voltage reading started out at about 190 VDC and
> >>quickly climbed until it was over 600 and I shut it down. Things
started
> >>smoking.
> >
> > This sounds about right. Except for the smoke, of course.
> >
> > John
> And the excessive load on the engine with no electrical load connected.
> Don Young
After reading all the comments it sounds like I simply need better
diodes--faster with a higher PIV rating. I'm not sure what the rating is on
the diodes I'm using but I seem to recall it was around 450 volts. I
expected to be getting somewhere in the neighborhood of 320 VAC from the
alternator so I thought I was in good shape.
Thanks everyone.
XML site map
> >> The epicenter of Eugene has a lot of shaft couplers and pully kits
> >> etc you might want to check out
> >>
> >> http://theepicenter.com/power_sources_generators_and_batteries.html
> >>
> >> I got some stuff for the hydro there.. good people.
> >
> > Thanks z. That's no doubt the place where I first got info on the
> > "homemade generator" as they call it. I looked at their couplers
> > recently but I'll look again. I have some doubts about the LoveJoy
> > couplers for my purposes just as Neon John pointed out.
> >
> > Which place did you get your PMA from, the Blue Wind place or the
> > hydrogen appliance place? I'm going to ask them if they make a PMA
> > specifically designed to go directly onto an engine shaft, either
> > tapered or keyed.