Backup Generator

[Hunter29]

Sure, glad to do that. I am going to order the CMD 9875w Kubota tomorrow morning.

Good for you, one day in the not too distant future I will do the same.. what ya going to do for a fuel tank ? Battey tender ? solar battery tender ?

 

[Hunter29]

Get some of this too..

Biobor JF Diesel

 

[Chilliwack Murray]

Why ? There rated for 100,000 hours.

30,000 is about the longest rated bearing replacement interval you’ll find for an alternator but it is very cheap insurance to change it sooner. That is almost 3 1/2 years of 24/7 running.

When the end bearing starts to pile up and produce drag the governor just puts more fuel to it. The end result is nothing usable.

Go with the manufacturers recommendation on this one.

 

[TheMan419]

Those small generators are very efficient at converting gasoline into noise....3600 RPM

It just depends on your needs. Knock on wood we don稚 lose power here that often. So my 3600 rpm gasser has more hours on it in quarterly maintenance runs than on actual powering the house runs.

If we lost power often then I would consider different options.

 

[kcflhrc]

My little 4000 watt generator I bought at Sams Club isn't noisy at all

 

[downsizingnow48]

Placed the order with CMD. Three week lead time plus shipping. I guess that gives me time to make the generator shed. I was planning a bare bones structure. But I saw on the Hardy Diesel website a useful sketch on how to make a shed that reduces the noise with simple vents and baffles. That seems worthwhile.

 

[LittleBill21]

Placed the order with CMD. Three week lead time plus shipping. I guess that gives me time to make the generator shed. I was planning a bare bones structure. But I saw on the Hardy Diesel website a useful sketch on how to make a shed that reduces the noise with simple vents and baffles. That seems worthwhile.

are you buying a ATS?

 

[Industrial Toys]

I like the heat of the generator in my shop, but it's noisy and there is a tiny exhaust leak. I would love to build an insulated building for generator use. Out of block would be nice for fire resistance. It would aleviate some of my fears about leaving a generator running all night in my shop. An open frame generator, you can walk around and see what's going on, is great.

 

[Sawyer Rob]

30,000 is about the longest rated bearing replacement interval you値l find for an alternator but it is very cheap insurance to change it sooner. That is almost 3 1/2 years of 24/7 running.

When the end bearing starts to pile up and produce drag the governor just puts more fuel to it. The end result is nothing usable.

Go with the manufacturers recommendation on this one.

In the manual for my Winco PTO generator, I'm going to go with the mfg's recommendation, it clearly states: for maintenance, change the rotor bearings every 80,000 hours. (eighty thousand)

SO, I guess they last a little while!

LOT's of folks around here without power right now, but ours is doing just fine, for the moment.

SR

 

[Hunter29]

The 9875 has an alternator that is oversized (I believe it is 14 KW rated) along with the larger rotating mass of the diesel's flywheel which gives you quite a bit more surge capacity for starting larger motor loads. As I indicated I have 3 heat pumps (a 2 ton geo, a second 1.5 ton geo and a 1.5 tom air-air unit. I have no problem starting even when two are already running. One problem in many big box store generators today is that to cut costs they reduce the iron (magnetic frame) and copper (windings) to a bare minimum on the generator. This reduces the surge rating substantially which limits motor starting capability. Also the light engine construction with small flywheel weight also reduces the surge load capacity of the engine due to lower rotating inertia. This is why the heavier units (also the mil surplus are in this category) do better overall. One change I made to my Centralmaine unit was to add a water separator to the fuel line to protect the unit's injection pump. Also I use a plastic 55 gal drum for diesel, so rust and corrosion is not a problem. Also if you have fuel stored for long periods, temperature changes causes breathing of air and moisture in the fuel tank. To combat this I have a desiccant breather on the tank to eliminate water (condensate) accumulation in the tank.

I also had Centralmaine add a "2 wire start controller" to my unit. They used a Dynagen unit, which when I bought mine some years ago cost an additional $300. This unit enables remote start/stop over a low voltage pair of wires (in my basement), controls shutoff valve, glow plug timing, warm up and cool down timing as well as low oil, low battery, overcrank and hi temp shutdown protection. It also displays battery voltage and frequency. Well worth the money.

paul

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