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Messages - Michael

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Generators / Re: (flashing) 12:00 12:00 12:00 12:00 12:00 12:00 etc
« on: September 16, 2007, 07:04:30 AM »
I just bought the slickest analog style round dial wall clock going from La Crosse Technology.  Hours, minutes and second hand about 12 inches diameter. It has a built in computerized ELF radio receiver that keeps in touch with the WWV 60 KHz time signal from NIST in Boulder, CO. USA where the atomic clocks that set the standard time reference are maintained.  My clock is always less than a fraction of a second in error. It even knows to self adjust for daylite saving/daylight wasting time changes.  You put the battery in and it sets itself.  Way cool. 

I wish every clock had this feature.  I have an Oregon Scientific Temp/Humidity weather station that has a clock that sets itself to WWV.  It's always dead on.  It's a "maintenance free" clock!

Michael

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Listeroid Engines / Re: Lister Generator Systems - What Are My Options?
« on: September 16, 2007, 06:35:49 AM »
That is some very interesting information regarding the 5.5Hz frequency variation and voltage fluctuation.  Now that I think about it, every piston engine driven generator would have this problem to some extent, but for slow speed engines, such as the Lister, it is excerbated by the step up ratio to the alternator, and the low cylinder count (fewer power pulses per revolution).

My computer equipment load is approximately 2kW including laser printer.  The UPS systems would probably have a problem with the frequency variation.  They are rated for 57 to 63 Hz.  The on-battery trigger may be sensitive to rate of change as well as magnitude.  My other loads include a 1.65kW microwave oven (I've heard those can be sensitive to power quality), a 600 watt refrigerator, and probably a 3-ton A/C unit (the latter two not particularly sensitive other than needing high starting current).

I appreciate the help!

Michael


3
Listeroid Engines / Lister Generator Systems - What Are My Options?
« on: September 15, 2007, 08:40:18 PM »
With the new EPA rules, it looks like I am a day late getting into this hobby (funny hiow that always happens to me with the smog regs).  I have only found one company selling Lister Generator systems, Central Maine Diesel.  Are there others I should be looking at, too?  I'm open to doing assembly, but I don't have the time for heavy fabrication.

Also, I have sensitive computer equipment I'll be running.  I've seen the ST waveforms on this site, and they will not do (too much distortion).  Another problem one person here mentioned was on his system that the low rpm powerstrokes will actually flicker the lights.  From a power output per dollar standpoint, I'd rather stay with an alternator, but is it possible to get good quality A/C power from a Lister system, or should I just go straight to a Lister driving a DC generator to an inverter system?  I don't want waste time and money going down a dead end.

Thanks for the advice!

Michael

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