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210 Points
Posted 5 years ago
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4,316 Points
If you look closely, at the Kobalt at Lowe's, you will see that the battery is only 2 amps. Marketing makes this fact somewhat stealthy. Anyway it would only be about 160 watts. EGO is the Tesla of the mowers. Hope this helps.
Blue Angel, Champion
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179,988 Points
Most companies don't announce new products until they have something to sell, so I don't think we'll get any announcements until that time. I'm sure Ego will revise their mower at some point, but as it sits right now it's one of, if not the best, cordless mower options available. Here's what Pro Tool Reviews had to say about it in their recent test:
"A year after taking the OPE market by storm, this is still the best overall design that we’ve seen from setup to storage and mowing in between. With a battery capable of running over an hour and a half, you can easily mow a 1/2 acre or more with this model."
Regarding the 1/2 acre capacity comment, they are referring to the new 7.5Ah battery option.
My personal feeling is, the combination of build quality and storage compactness makes this mower a better deal than most realize. I have very little space to store a mower in my small garage so this may carry more weight with me than some, but I have a feeling most people would feel the same once they saw how easy it is to store with every use and how much space it frees up in their garage or shed.
Most of these mowers offer folding handles, and some models even store upright like the Ego does. BUT, they are such a hassle to fold up I doubt most people would end up doing it every time they use it.
That's my point of view, for what it's worth.
Blue Angel, Champion
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179,988 Points
Unfortunately, the Pro Tools review is almost as good as it gets outside Consumer Reports.
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594 Points
Having a 2 second battery & 30 min recharge is a big deal. Plus another battery is $99 not $199 like the Ego. My daughter borrowed my Ego & liked it. Had to recharge once because of the tall grass. She went on line & found the Kobalt. Ego lost a sale because of the extra battery. Today I am picking up the Kobalt 80 volt for her, because of the extra battery. I love my Ego but if I had shopped around I may have bought the Kobalt too.
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210 Points
Ken, Champion
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73,580 Points
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65,000 Points
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210 Points
Power = Amps x Volts x efficiency (because no motor is 100% efficient in transferring power).
The EGO has a brushed motor, while the Kobalt is brushless. Brushed motors actually drop torque efficiency at higher RPMs, while brushless ones do not. Thus, even if the motors in the same mowers have the same power rating (I know the EGO is 600W, but no word on the Kobalt), the overall torque of the Kobalt would be higher given the same RPM (EGO 3300, Kobalt 3200) because it's a more efficient motor.
Blue Angel, Champion
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179,968 Points
SCDC, Champion
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54,608 Points
SCDC, Champion
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54,608 Points
Blue,
I agree about the comment "efficient system". This is correct. I'm for keeping it simple, thus brush motors are fine with me. Brushless require more "break points" and are more costly. Like I said, trade offs. Both are fine!
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4,316 Points
We always miss the point, but we have you to straighten us out ,because you are the only one that knows anything...just ask yourself...
Blue Angel, Champion
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179,988 Points
SCDC, Champion
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54,608 Points
While Brushless is more reliable, it takes more electronics to run them. Therefor there are pros and cons to this. I like brushes for one reason, less electronics to go bad. I've never had a brush motor go bad. I don't see how a mower motor with brushes will fail. Not enough hours used in a lifetime! It's the electronics, or the battery that will go first, or the motor bearings.
Brushless may be more efficient, but they are more expensive and have to have more electronics to make them work. It doesn't bother me one way or another which motor they use. If it does the job, has good run time, and they keep building unbelievably advanced battery packs (EGO), then I'm good.
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John Melinte
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Blue Angel, Champion
The Ego 56V 4Ah battery has 224Wh of energy (56x4). More than a single 80V 2Ah battery, but less than two of them.
Higher voltage systems can be more efficient, but it takes large increases to make an appreciable difference. For example, the automotive industry has been talking for almost two decades about adopting higher voltage systems. The 14V systems in place now require very high current alternators capable of supplying 100-200 Amps of current to keep today's feature-rich cars fed. This takes thick gauge wiring which is expensive and heavy.
The proposal was to go to a 36V static/42V operational electrical system. This is 3x the current 12V/14V systems. Even though there is immense pressure in automotive to be both more energy efficient AND more cost efficient, these high voltage systems have not yet shown up in our cars.
In a nutshell, even though tripling the voltage of automotive systems would save weight, fuel and (most importantly) money, the benefits just aren't great enough to make the switch. Just to be clear, we're looking at a 300% increase in voltage. Here's an article for further reading:
http://en.wikipedia.org/wiki/42-volt_electrical_system
Does an 80V electrical system offer benefits over a 56V system? Yes.
Are those benefits anything close to significant in the real world? No. 99% of the benefit is to the company selling the products... in the form of marketing.
Higher voltage alone does not make a more powerful electrical system. Greater Ah alone does not make a more powerful electrical system. A combination of higher voltage and higher Ah is what makes for more energy capacity, which allows a system of a given power to run longer, or a system to run at higher power for the same time.
John Melinte