Push Mowers, Battery Vs. gas

[Grumpycat]

Coal is burning somewhere to make those batteries charge.

Good!

Coal is dirty to get on your face but for some reason you don't mind powering your computer with it. Running your air conditioner. Keeping your beer cold.

A Tesla Model 3 "emits" the same quantity of "pollution" per mile "burning" coal-fired electricity as a gasoline automobile at 40-50 MPG. Yet the Tesla (or battery mower) can effortlessly use electricity from any source available. The gasoline (or diesel) ICE requires a very precise blend of fuel to meet emission requirements.

 

[rontaki]

Motor power (watts) is a product of volts times amps (current). Power loss in the motor's windings is a product of the current flowing against the resistance of the wire. Increasing the voltage gives higher power without increasing the resistance loss. For the same power, higher voltage uses less copper or aluminum wire in the motor, has less heat loss, weighs less and is less expensive to make than a motor of the same power running on less voltage.

I have an EGO string trimmer, one of their first models. I've taken the battery pack apart, and found that EGO uses a thermal wrap around each cell to help keep them cooler, both in charging and in use. I believe this is why the battery pack has lasted so long, and can deliver a lot of current as needed. Turned out the problem was with the outlet the charger was plugged into, so put pack back together and still use it.

In the other brands of battery packs I've dissembled, the batteries are packed close together, making thermal degradation of the cells more likely than in EGO's packs. This also limits how much current they can safely supply for the given amount of cells. Kudos to EGO!

 

[ROUSTABOUT]

Good!

Coal is dirty to get on your face but for some reason you don't mind powering your computer with it. Running your air conditioner. Keeping your beer cold.

A Tesla Model 3 "emits" the same quantity of "pollution" per mile "burning" coal-fired electricity as a gasoline automobile at 40-50 MPG. Yet the Tesla (or battery mower) can effortlessly use electricity from any source available. The gasoline (or diesel) ICE requires a very precise blend of fuel to meet emission requirements.

I'm all for burning fossil fuels. How much pollution does it take to make ethanol? How much mining equipment to get lithium? 20 years in Afghanistan was all about lithium. Is nuclear worth the danger? Nuclear waste? Where do we put it? The greenies are nuts.

 

[Richard001]

Motor power (watts) is a product of volts times amps (current). Power loss in the motor's windings is a product of the current flowing against the resistance of the wire. Increasing the voltage gives higher power without increasing the resistance loss. For the same power, higher voltage uses less copper or aluminum wire in the motor, has less heat loss, weighs less and is less expensive to make than a motor of the same power running on less voltage.

You are assuming that the manufacturer kept the same wire size when going to a higher voltage unite as was used in the lower voltage unit.

Most likely, they changed the wire size to a smaller size when going to the higher voltage. Its all about cost and profit. If the manufacturer reduced the size of the wire in the motor, then there will still be I X R loss equivalent to that of the lower voltage motor.

 

[Gale Hawkins]

https://www.washingtonpost.com/home/2022/03/29/tips-shopping-electric-lawn-mower/

Grass is growing again around here.

 

[Grumpycat]

https://www.washingtonpost.com/home/2022/03/29/tips-shopping-electric-lawn-mower/

Grass is growing again around here.

That was an article of little content on The Washington Post.

Nothing wrong with a plastic mower deck if it is designed right. Was looking at my EGo the other day and noted it was manufactured in 2016.

 

[crashz]

I bought my brother the 40V Ryobi 21inch mower. He wants to convert to all electric and has no mechanical ability so it works great for him. He also has a 1/3 acre yard of the thickest grass I have ever seen. You'd swear he is growing shag carpet. Every week or so he cuts the grass and its been great. He bought the string trimmer too.

The trimmer can go nearly all season on one charge. If he cuts weekly, he can get two cuttings out of a charge, but usually he lets it go and is chopping through cabbage the whole time, so he re-charges each cutting.

 

[two_bit_score]

https://www.washingtonpost.com/home/2022/03/29/tips-shopping-electric-lawn-mower/

Grass is growing again around here.

Looks like weekly mowing is right around the corner.

 

[tradosaurus]

For small engines like lawn mowers and weed eaters use non-ethanol where possible or treat with fuel additive. And definitely keep out of the rain.

 

[jyoutz]

I was about 10 minutes short of heading out to HD to pick one up. I gave my Husqy gasser one last chance and it started so I could mow what needed mowin'.

Still hoping to get through this season before biting the battery.

I have a Husky gasser push mower. I used to have fuel issues every spring until I started using ethanol free fuel. And for some reason it can be hard starting occasionally, but I remove the air filter and it starts perfectly. This is a mystery to me because the the air filter is clean, and it runs fine after I start it and then replace the air filter. Once the mower is running, it works well, but can be stubborn starting. Maybe it’s just the Husky design? I’ve not had so much difficulty starting my previous gasser mowers.