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Posted by Daniel Who Wants to Know on July 15, 2009, 5:16 am

Try an alternator pulley for a tractor.  The International Harvester 1066
and the John Deere 4430 both use a dual groove pulley on the alt.  IIRC the
IH pulley is a larger diameter than the JD one.  Your other option would be
to go to a serpentine belt setup but that would require very precise belt
alignment and a suitable pulley for the engine.

Posted by Ulysses on July 15, 2009, 2:30 pm

Thanks!  Someone else suggested looking at farm equipment but I didn't
really know where to start.  Now I have specific tractors for reference!

Posted by wmbjkREMOVE on July 13, 2009, 7:09 pm
 On Mon, 13 Jul 2009 08:53:53 -0700, "Ulysses"

As I'm sure you know, the modern, imported, OHV small engines are all
starting to look *very* similar in quality. I have a 13hp clone of the
popular Honda model and it's really nicely made. Time will tell if
it's as good as it looks, but there's one thing I have no doubt about:
most of Honda's rep for quality was based on the difference between
them and their competitors' older models. Honda earned that
reputation, but the resultant brand loyalty should be less now that
their competitors have improved so much.

With either engine It takes the same amount of horsepower to do the
job. All other things being equal, a bigger engine should use a little
more fuel since there's more friction and waste with larger piston
etc. But it seems that design can sometimes make up for that. For
example, our car was offered with a 2.4L 4 cylinder, and a 3.5L 6 with
100 extra hp. Even though the 6 added some weight, it delivers
slightly better highway mileage. Things like chain-driven cams and
variable valve timing on both cams probably more than made up for the
extra friction and weight. The following year they offered a
redesigned 4, and now the same vehicle gets slightly better mileage
with that, which indicates that the tech is probably now equal in the
2 current engines.


Posted by Bruce in alaska on July 13, 2009, 8:34 pm
Just want to make a NOTE, Here.....

With all the interest in Gensets that this thread has generated, it
would seem that a bit of Term Definition would be in order....

1. Prime Power Generator:  A Generator that was designed and built to
provide power 24/7/365, for its life, with periodic Maintainance being
done at OEM prescribed intervals. Typically these turn 1800 Rpms OR Less
and usually are bigger than 5 Kw, and can be as big as 5000 Kw. Design
Lifetime is "Indefinant" with OEM Spec'd Periodic Rebuilds, usually in
the 10-20K Hour range for Topends and 20-40k Hour IN-Frames.

2. Standby Power Generator: Similar to Prime Power Generator but rated
to provide power 24/7 for anywhere from a few Hours, Days, or Weeks.
Again with periodic Maintainance being done at the OEM prescribed
intervals.  Usually in the 5 Kw to 1000 Kw Range. Lifetime is
"Indefinant" with OEM Spec'd Periodic Rebuilds, usually in the 10-20K
Hour range for Topends and 20-40k Hour IN-Frames.

3. Contractor Grade Generator: These are much less robust than  either
of the two above, but the are designed to provide power for 18/6 for
there operating life.  Maybe 1800 Rpm, or 3600 Rpm, depending on their
Design Lifetime, and usually are rebuild-able which can extend their
useful life, out 3-5 times.  Usually will have a Pressure Lubeoil system
and LubeOil Filter. Design Lifetimes, with OEM Spec'd Maintainance, in
the 10-20K Hour Range.

4. Consumer Grade Generator: These are typically what is found in
Hardware Stores, and Discount Houses. Mostly 3600 Rpm Units, and Splash
Lubed with No Oil Filter. Come is various quality Grades from "Superb",
all the way down to "Cheap Junk, even when New of the Shelf" Design
Lifetime, with OEM Periodic Maintainance, will vary  from 500 Hours to
maybe 10K Hours, for one of the "Superb" Grade Units. Most of these type
units, are built in limited Factory Runs, with limited Parts
availability, and this severely limits there rebuild-ability, due to
lack of parts after just a few years.

From the discussions seen on this thread so far, we are not talking
about either of the first two categories, and mostly about Consumer
Grade Gensets.  

If one REALLY wants a GOOD Genset, then it will cost a lot more than
what Costco is charging, and basically the Old Adage, "You get what you
pay for", applies here.  I have had a couple of Prime Power Generators
in the 20Kw Range, that were both in the 66K Hour Operational Range when
they were replaced, and that only happened because they were 20 years
old, and InFrame Parts were no longer available from the OEM in Japan.
Replacement costs were in the $K range, and if you figure in how many
Contractor Grade Gensets one would have to buy to do the same job, they
were cheap, at twice the price.  I also have a Fairbanks/Morse 45B/3Kw
that is over 60 years old, was last InFramed 5 years ago, and will not
need another, in my lifetime... It runs a neighbors operation, 16/7/180
each summer, and turns at 1200 Rpm.  I sold a Lister 12 Kw last summer,
that came from a Mountaintop Telco Microwave Site, that had 120K
Operational Hours on it, with InFrames every 40K Hours. It had just 120
Hours on it after the last InFrame, and the only reason they replaced
it, was they added more load at the site, and had to put in a bigger
Genset. It went to a neighbor for $.5KUS....

Bruce in alaska
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Posted by Ulysses on July 14, 2009, 12:47 am

Thanks for posting that Bruce.  Basically what I'm saying is that I think
some cheap, crappy generators are better than other cheap, crappy generators
;-)  I would like to find something that would qualify as a Prime Power or
Standby Power generator that would directly charge my 48 volt battery bank.
Know of any?  If I ever get my 6.5 HP engine to drive my Delco alternator
satisfactorily and reliably I would be very interested in either driving it
with a high quality engine, or replacing it with something else altogether
providing it will hold up to a few hours of every day use.

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