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Power stability with PTO generators
If my generator is running, I want it running at full speed ready to take a load if it develops on the line and provide 60 Hz power to that load, immediately. If I get to a point that I don't need ANY power, like the idle down situation, I will turn the genset off. When I am running on generator power, there are very few times when the genset will be delivering ZERO power to the panel and could idle down.
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Power stability with PTO generators
AC5Z0, I agree completely for standby purposes. I can't imagine a case where our standby genset ever would idle for any but the briefest periods of time, mostly during startup and cooldown. In the case where a portable generator is being used for purposes of remote construction I could see one idling fairly often, between uses of a circular saw for example.
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Power stability with PTO generators
It would seem a significant number of the portable generators sold go to contractors. I rather doubt they give a rip about the fuel but the wear factor would probably be noticeable with the feature. Mine never kicks down on back up power, there is always some draw.
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Power stability with PTO generators
I can see why a generator might idle down with one person using it at a construction site, but for backup power, which I expect includes most everyone in this discussion, it should not be an issue. The difference in fuel usage during the very short periods of ZERO load will not be significant in any way.
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Power stability with PTO generators
I would agree the fuel consumption is a moot point. But when I am useing my generator in the woods and for other uses, The switch that was being discussed has significant value in regards to wear. When there is ZERO load it idles down. There is no lag at all when juice is needed. The biggest benefit I notice is the noise level. With out the idle down I would constantly be turning the noisy thing off. Either way if you dont like it or want the switch its as simple as not turning it on. I dont suspect the manufactures differentiate "our" needs here as much as those which fuel their sales.
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Power stability with PTO generators
I understand about the noise. The sound deadening qualities of the mufflers and air intakes are not good on some brands. My first generator was very loud and I replaced the muffler and welded on a copper plumbing union fitting onto the muffler outlet to increase the length of the exhaust pipe with a removable section. That improved the raspy exhaust sound considerably.
My backup generator is a 7KW with a Honda engine. I don't think that it is as loud as the old smaller generator that I modified before. But, it has more low frequency noise. I was thinking of adding the copper union fitting to that Honda muffler also and then running the exhaust through an automotive "turbo" muffler. I forgot to mention on the previous generator, I did try a glasspack automotive muffler and it helped, but there was more high frequency noise from the first generator.
You will have to draw your own conclusions about safety, but I have run the older generator inside a building with the union fitting securely attached to a pipe that was mounted in a vertical exhaust stack for an old furnace. I know that there are pros and cons and you have to make your own decision whether you think that you could do this safely. I did have a vent fan providing positive fresh air into the building and it ran on the generator power.
We started this thread about PTO generators, and that is a different story entirely. Idle down is not even an option. I doubt that fuel usage is a problem with my tractor idling at PTO rated speed, but the noise might be in certain situations.
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I was supposed to get the "ultra quiet" muffler on mine. I'd be afraid of the regular one. This thing is louder than the 2210. I am talking to Gerry at Bad River about makeing a PTO generator. I expected to hear from the dealer with a answer on the JD version today but no luck yet. Dave
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08-22-2003, 12:58 
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