Help! My Ego electric mower won't start

[Anonymous]

I forgot a link

https://www.scientificamerican.com/article/how-to-pick-a-lawnmower/

[Anonymous]

Anonymous wrote:Look, every analysis agrees that electric mowers are generally better for the environment than gas mowers.
There seems to be this thought among people that unless it's completely 100% green, then it is not worth it.

Further, the argument that charging it spews pollution is a bit of a chicken and an egg. The power plants already exists and the amount of energy that a battery draws is minimal.

Compare that to the continual refining of fossil fuels for gas to power the mower Plus the pollution generated locally and the energy from the refinery, and electric comes out as a net positive for the environment. In spite of all the talk if " efficiency."

Finally, the battery powered mower has the advantage of moving into the future. That is, as solar panels and more renewable resources become more available for charging, in the long run, the battery is the future

I own an Ego lawnmower. The selection of a lawnmower should be based on cost/benefit for everyone. For me, I did not want to deal with the fumes (nor did I want my kids to deal with the fumes when they mow the lawn) so I was willing to pay the extra cost for the electric mower. On the other hand someone who can strip a gas mower apart buy a used one for $100-$200 would laugh at my choice. The operating cost differential between the two are minimal to matter.

[Anonymous]

Anonymous wrote:

Anonymous wrote:Contemplating a typical fossil-fuel-burning plant as the source: 10% is lost in combustion (not transferred to steam), 60% is lost at the turbine, 10% is lost in transmission, 20% is lost charging, 10% is lost discharging, and 10% is lost in the motor… so it ends up about 21% efficient - that is to say, ~79% of the energy in the source oil goes to waste (heat).

Nerd!

Nerd?

Someone explains in perfect, accurate detail why your fetishized electric mowers are 60% LESS energy efficient than a gas mower, and you respond by calling them names.

Let's explain it another way then. A more simple way, that even you can understand:

Your battery powered electric mower is causing 60% MORE carbon pollution than a gasoline powered mower.


I'm a mechanical engineer. I understand things like energy transfer and thermal efficiency. I also have a deep and abiding concern for the health of this planet. And that's why I own a gasoline powered mower. Because it uses less resources and creates less pollution per unit of work than an electric mower. This is SCIENCE.

[Anonymous]

It's very interesting that battery electrics cause MORE emissions indirectly.

That said, I've been delighted with my electric because of the lighter weight, reduced noise, and the end of dealing with gas/oil. That said, the carbon emissions from mowing my dinky lawn are probably dwarfed by my [modest] driving and other energy consumption. It would be interesting to know (generally) how lawn mowing-related emissions stack up.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Contemplating a typical fossil-fuel-burning plant as the source: 10% is lost in combustion (not transferred to steam), 60% is lost at the turbine, 10% is lost in transmission, 20% is lost charging, 10% is lost discharging, and 10% is lost in the motor… so it ends up about 21% efficient - that is to say, ~79% of the energy in the source oil goes to waste (heat).

Nerd!

Nerd?

Someone explains in perfect, accurate detail why your fetishized electric mowers are 60% LESS energy efficient than a gas mower, and you respond by calling them names.

Let's explain it another way then. A more simple way, that even you can understand:

Your battery powered electric mower is causing 60% MORE carbon pollution than a gasoline powered mower.


I'm a mechanical engineer. I understand things like energy transfer and thermal efficiency. I also have a deep and abiding concern for the health of this planet. And that's why I own a gasoline powered mower. Because it uses less resources and creates less pollution per unit of work than an electric mower. This is SCIENCE.

Like I already said upthread, Who cares? I'm only concerned about my micro-environment. I don't want to breathe fumes. Same reason why we outsourced manufacturing to China. YOU worry about the macro-environment and YOU don't buy a battery powered mower. Problem solved.

[Anonymous]

OP here. Wanted to provide an update for anyone who cares. We took the mower to Home Depot mower repair (for free). After weeks and weeks—and literally zero explanation—we were given a free, brand-new upgraded Ego lawn mower. It arrived yesterday during the snowfall.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Contemplating a typical fossil-fuel-burning plant as the source: 10% is lost in combustion (not transferred to steam), 60% is lost at the turbine, 10% is lost in transmission, 20% is lost charging, 10% is lost discharging, and 10% is lost in the motor… so it ends up about 21% efficient - that is to say, ~79% of the energy in the source oil goes to waste (heat).

Nerd!

Nerd?

Someone explains in perfect, accurate detail why your fetishized electric mowers are 60% LESS energy efficient than a gas mower, and you respond by calling them names.

Let's explain it another way then. A more simple way, that even you can understand:

Your battery powered electric mower is causing 60% MORE carbon pollution than a gasoline powered mower.


I'm a mechanical engineer. I understand things like energy transfer and thermal efficiency. I also have a deep and abiding concern for the health of this planet. And that's why I own a gasoline powered mower. Because it uses less resources and creates less pollution per unit of work than an electric mower. This is SCIENCE.

I haven't run the numbers on carbon pollution, but it's laughable to suggest that a gas mower creates less pollution than an electric mower when you consider other pollutants like NOx. Even taking into account the transmission losses etc, the idea that a single stroke engine can be as efficient as a modern power plant is just nonsense. Even a car is something like 6-10 times cleaner than a lawnmower simply on a per mile basis and the car is doing a lot more work.

And congrats to the OP on getting it resolved at least.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Contemplating a typical fossil-fuel-burning plant as the source: 10% is lost in combustion (not transferred to steam), 60% is lost at the turbine, 10% is lost in transmission, 20% is lost charging, 10% is lost discharging, and 10% is lost in the motor… so it ends up about 21% efficient - that is to say, ~79% of the energy in the source oil goes to waste (heat).

Nerd!

Nerd?

Someone explains in perfect, accurate detail why your fetishized electric mowers are 60% LESS energy efficient than a gas mower, and you respond by calling them names.

Let's explain it another way then. A more simple way, that even you can understand:

Your battery powered electric mower is causing 60% MORE carbon pollution than a gasoline powered mower.


I'm a mechanical engineer. I understand things like energy transfer and thermal efficiency. I also have a deep and abiding concern for the health of this planet. And that's why I own a gasoline powered mower. Because it uses less resources and creates less pollution per unit of work than an electric mower. This is SCIENCE.

I haven't run the numbers on carbon pollution, but it's laughable to suggest that a gas mower creates less pollution than an electric mower when you consider other pollutants like NOx. Even taking into account the transmission losses etc, the idea that a single stroke engine can be as efficient as a modern power plant is just nonsense. Even a car is something like 6-10 times cleaner than a lawnmower simply on a per mile basis and the car is doing a lot more work.

And congrats to the OP on getting it resolved at least.

Sorry, but you're wrong.

Thermal efficiency of a gasoline engine is about ~33%

Thermal efficiency of electric battery operated device charged by the power grid is less than 16%.

[Anonymous]

Just use a manual reel mower and be a real (wo)man. Your arms will be buff as Michelle Obama.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Contemplating a typical fossil-fuel-burning plant as the source: 10% is lost in combustion (not transferred to steam), 60% is lost at the turbine, 10% is lost in transmission, 20% is lost charging, 10% is lost discharging, and 10% is lost in the motor… so it ends up about 21% efficient - that is to say, ~79% of the energy in the source oil goes to waste (heat).

Nerd!

Nerd?

Someone explains in perfect, accurate detail why your fetishized electric mowers are 60% LESS energy efficient than a gas mower, and you respond by calling them names.

Let's explain it another way then. A more simple way, that even you can understand:

Your battery powered electric mower is causing 60% MORE carbon pollution than a gasoline powered mower.


I'm a mechanical engineer. I understand things like energy transfer and thermal efficiency. I also have a deep and abiding concern for the health of this planet. And that's why I own a gasoline powered mower. Because it uses less resources and creates less pollution per unit of work than an electric mower. This is SCIENCE.

I haven't run the numbers on carbon pollution, but it's laughable to suggest that a gas mower creates less pollution than an electric mower when you consider other pollutants like NOx. Even taking into account the transmission losses etc, the idea that a single stroke engine can be as efficient as a modern power plant is just nonsense. Even a car is something like 6-10 times cleaner than a lawnmower simply on a per mile basis and the car is doing a lot more work.

And congrats to the OP on getting it resolved at least.

Sorry, but you're wrong.

Thermal efficiency of a gasoline engine is about ~33%

Thermal efficiency of electric battery operated device charged by the power grid is less than 16%.

I think you were just making numbers up. The thermal efficiency of a gasoline-powered engine is 20%. For a battery powered engine, it is 26%. If you are going off of and hydro electric or solar grid, your efficiency is going to be boosted.

I can't find a single source anywhere that backs up your numbers and monkey math.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Contemplating a typical fossil-fuel-burning plant as the source: 10% is lost in combustion (not transferred to steam), 60% is lost at the turbine, 10% is lost in transmission, 20% is lost charging, 10% is lost discharging, and 10% is lost in the motor… so it ends up about 21% efficient - that is to say, ~79% of the energy in the source oil goes to waste (heat).

Nerd!

Nerd?

Someone explains in perfect, accurate detail why your fetishized electric mowers are 60% LESS energy efficient than a gas mower, and you respond by calling them names.

Let's explain it another way then. A more simple way, that even you can understand:

Your battery powered electric mower is causing 60% MORE carbon pollution than a gasoline powered mower.


I'm a mechanical engineer. I understand things like energy transfer and thermal efficiency. I also have a deep and abiding concern for the health of this planet. And that's why I own a gasoline powered mower. Because it uses less resources and creates less pollution per unit of work than an electric mower. This is SCIENCE.

I haven't run the numbers on carbon pollution, but it's laughable to suggest that a gas mower creates less pollution than an electric mower when you consider other pollutants like NOx. Even taking into account the transmission losses etc, the idea that a single stroke engine can be as efficient as a modern power plant is just nonsense. Even a car is something like 6-10 times cleaner than a lawnmower simply on a per mile basis and the car is doing a lot more work.

And congrats to the OP on getting it resolved at least.

Sorry, but you're wrong.

Thermal efficiency of a gasoline engine is about ~33%

Thermal efficiency of electric battery operated device charged by the power grid is less than 16%.

I think you were just making numbers up. The thermal efficiency of a gasoline-powered engine is 20%. For a battery powered engine, it is 26%. If you are going off of and hydro electric or solar grid, your efficiency is going to be boosted.

I can't find a single source anywhere that backs up your numbers and monkey math.

https://www.energy.gov/sites/prod/files/2014/03/f8/deer10_johansson.pdf


This has numbers and graphs, so it might be over your head.

You know - monkey math.

[Anonymous]

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:Contemplating a typical fossil-fuel-burning plant as the source: 10% is lost in combustion (not transferred to steam), 60% is lost at the turbine, 10% is lost in transmission, 20% is lost charging, 10% is lost discharging, and 10% is lost in the motor… so it ends up about 21% efficient - that is to say, ~79% of the energy in the source oil goes to waste (heat).

Nerd!

Nerd?

Someone explains in perfect, accurate detail why your fetishized electric mowers are 60% LESS energy efficient than a gas mower, and you respond by calling them names.

Let's explain it another way then. A more simple way, that even you can understand:

Your battery powered electric mower is causing 60% MORE carbon pollution than a gasoline powered mower.


I'm a mechanical engineer. I understand things like energy transfer and thermal efficiency. I also have a deep and abiding concern for the health of this planet. And that's why I own a gasoline powered mower. Because it uses less resources and creates less pollution per unit of work than an electric mower. This is SCIENCE.

I haven't run the numbers on carbon pollution, but it's laughable to suggest that a gas mower creates less pollution than an electric mower when you consider other pollutants like NOx. Even taking into account the transmission losses etc, the idea that a single stroke engine can be as efficient as a modern power plant is just nonsense. Even a car is something like 6-10 times cleaner than a lawnmower simply on a per mile basis and the car is doing a lot more work.

And congrats to the OP on getting it resolved at least.

Sorry, but you're wrong.

Thermal efficiency of a gasoline engine is about ~33%

Thermal efficiency of electric battery operated device charged by the power grid is less than 16%.

I think you were just making numbers up. The thermal efficiency of a gasoline-powered engine is 20%. For a battery powered engine, it is 26%. If you are going off of and hydro electric or solar grid, your efficiency is going to be boosted.

I can't find a single source anywhere that backs up your numbers and monkey math.

https://www.energy.gov/sites/prod/files/2014/03/f8/deer10_johansson.pdf


This has numbers and graphs, so it might be over your head.

You know - monkey math.

Well that settles that, lolz!

[Anonymous]

How on earth is an experimental HCCI car engine relevant to a 2/4 stroke gas mower? You might as well compare a leaf blower to a jet engine in terms of technological gap.

[Anonymous]

Anonymous wrote:How on earth is an experimental HCCI car engine relevant to a 2/4 stroke gas mower? You might as well compare a leaf blower to a jet engine in terms of technological gap.

Exactly! In addition, he/she threw out a hypothetical as"proof." The chart details a PATH to maximum efficiency. You have to have the exact correct size the exact correct load and perfect operating conditions.

his or her stupid slideshow ends with the ABC of potential maximum efficiency and then follows with a picture of real world conditions. So his own proof negates his own argument.

What an idiot.

[Anonymous]

Ths thread done jacked