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320 Points
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Posted 3 years ago
Blue Angel, Champion
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180,008 Points
An electric ZT would be awesome!
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13,128 Points
I want an anti-rollover bar in it so I can go fast, plus it makes it look better. I'd budget 4 to 5 grand for it. Maybe have it use up to eight 7.5Ah batteries and have it come with four rapid chargers or more. Have it be able to run off of a minimum number of batteries so it doesn't draw too much current from individual cells.
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320 Points
Blue Angel, Champion
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179,968 Points
A more likely scenario would be Ego using a large permanently mounted battery. It would be much cheaper per kWh, and would allow them to actively cool it similar to what Tesla and GM do with the Model S and Volt.
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13,128 Points
Blue Angel, Champion
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179,968 Points
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102 Points
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65,000 Points
At 10 amps this is 3 watts. 6 at 20 amps.
So we get it Mike. Green works is making a zero turn mower.
Green machine uses lithium batteries that are huge. And multiple batteries per machine.
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372 Points
I understand it would cost a fair amount to develop and carry a hefty retail price tag but the 20 inch cut requires about 2 hours of my time every week - and that's only if I don't water the grass. I would really like to have a 40 inch cut zero turn motor to make my life a lot easier. I tried a gas engine Toro mower and it was terrible.. I forgot how loud they are and how bad they smell.
Any chance a nice zero turn electric mower is quietly being developed?
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65,000 Points
SCDC, Champion
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54,608 Points
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65,000 Points
SCDC, Champion
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54,608 Points
David HD, Champion
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35,092 Points

Blue Angel, Champion
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179,988 Points
"Watch yer toes!" :-)
David HD, Champion
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35,092 Points
Blue Angel, Champion
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179,988 Points
David HD, Champion
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35,092 Points
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380 Points
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372 Points
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380 Points
David HD, Champion
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35,092 Points
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432 Points
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6,194 Points
I now understand why Ego came out with their 20" Steel, Brushless mower...they are trying to keep up with the Greenworks Commercial line. http://greenworkscommercial.com/available-on-siteone/ The Site One folks reach out to me last week to try out their products. That should be interesting. Mind you, not an easy switch even if the product is better (ie: mulching ability) when I have so much invested in Ego and rightly so, they brought the best to the market first. Funny thing is that I started out with the 20" dual blade Greenworks in our first year (which mulched great btw) but it wasn't built to stand up to our heavy workload; so when Ego came to the market it was a big improvement with version 1 and then even better with version 2. Now they have version 3 but I'm not ready to invest in the kit version because I don't need more batteries at this time.
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65,000 Points
David HD, Champion
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35,094 Points
SCDC, Champion
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54,658 Points
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65,000 Points
Erectorset (uni strut) for men.
This is just a mock up. But i tell ya, it pushes easy with no ground drive going on. I have the motors for it also.
1500 watt is what it will use. Hoping i can push them by my thighs.
Kind if excited because its 52" and zero turn (manual)
Ill make it pretty some day but in who knows how long, ill have it done.... with this, ill be able to mow 2x per week.

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65,000 Points
The front 2 tires are caster wheels...
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1,084 Points
So wouldn't be easier to just buy a new deck (single part) maybe from the 30in Toro ($155 by the way...), or 33in Cub Cadet of something like that (I couldn't find any walk behind mower bigger than 33in...) and just mount the Ego motor, controls, handle, etc on it? It would requires a bit of re-engineering as they seem to use 2 blades instead of one and have a system of belts to drive from a single motor shaft. I don't know if this mower would be balanced or if it would be too much work for the EGO motor and battery, but seems a much simpler and elegant way to go (and probably about the same price at the end...) than duck taping 2-3 mowers together isn't it?
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65,000 Points
Its not set up to articulate with the ground yet, but im preparing for it so i can do it over the winter or in my newly found free time if this works
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26,632 Points
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26,632 Points
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65,000 Points
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65,000 Points
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65,000 Points
The motors i have, are not reversible. They are shunt motors so that sucks bad. But they were all i could find.
Some guy is selling 20" mower motors for 120 on ebay right now and a controller for 85.... garbage deal.
David HD, Champion
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35,094 Points
Blue Angel, Champion
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180,008 Points
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132 Points
Blue Angel, Champion
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179,968 Points
szwoopp, Champion
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105,650 Points
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380 Points
szwoopp, Champion
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105,650 Points
I believe Cantrell still has some edger kits in stock - which points to HD/BORG as the problem in the supply chain rather than Ego.
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380 Points
If there are other retailers that carry the EGO line please let it readily be known. it seems that, according to your website, HD is the only retail outlet for EGO products.
Thanks for your reply.
szwoopp, Champion
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105,650 Points
as of a week ago edger attachment was sold out. Edger kit was still available.
You may want to check again. Unless you have talked to Cantrell in the past week.
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92 Points
This is a R&D question for the designers
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102 Points
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1,084 Points
If EGO was to use their current packs strategy for a riding mower, you would probably need to have 8 to10 x 7.5Ah pack for a riding mower. Even if you would say EGO can let the pack go for $100-$120 each when purchased with a kit, you would still have $1,000 cost on top of the mower itself... Let's not think what it would mean if one pack goes bad after warranty is over and you have to purchase one or more pack at stand alone price... It would become a pricey toy...
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65,000 Points
Lead acid is easy to charge with solar so this is why im converting my home made mower to lead acid, but assisting with ego batteries. I can solar charge the lead acid batteries while having the ego batteries there to act as a buffer for the lead acids. Adding a barrier diode between the lithium batteries and the ego batteries. I think I'll be at 84" wide next year on my mower.
For reference, look at my avatar picture.
Riding mowers are not a good idea for battery powered equipment, there is no need for all the extra weight and pulling our fat butts around. Walk behind huge area mowers are the key.
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1,904 Points
In my dreams I am driving an EGO 46" Zero-Turn, Adjustable-Speed, Adjustable-Height, Battery-Powered Lawn Mower for at least an hour. It can pick up, mulch, or throw lawn clippings efficiently, while cutting a clean, smooth, manicured tall-fescue lawn.
Do you have a battery, now or under development, that could power my dream?
If so, how soon might we see my dream come true?
Or, am I just dreaming?
In any case, I will keep dreaming. Dreams are what make things happen.
To the future!
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100 Points
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65,000 Points
Back to 3 for now. Can't get the wings to work just yet.
https://youtu.be/qL_AAy_hiQg
It's 60 decibles at 4' away.
Way more power than I thought it would have. I mowed a little bit yesterday with it. But I am not quite finished
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290 Points
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132 Points
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65,000 Points
But who knows maybe a huge thing is being developed.
I wish we could find out.
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65,000 Points
https://youtu.be/kFqouZvOQAE
So. Ya. It cost me 900 to build it. Pretty darn good price.
I have five 5ah and two 4ah batteries to run it. The problem is that it eats batteries. Due to the gator blades :).
The deck is off if a John Deere f525 tractor.
szwoopp, Champion
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105,650 Points
szwoopp, Champion
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105,650 Points
SCDC, Champion
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54,608 Points
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65,000 Points
Blue Angel, Champion
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179,968 Points
All you need now is some traction! Maybe more batteries? :-)
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65,000 Points
More batteries yes. It's run time is about 20 minutes and those batteries do get warm. So I'm going to run it off of 6 batteries, and get rid of the gator blades as they are causing alot of the energy to be shot out the side chute.
Next step is a study on power usage. There must be some big inefficiencies that I am overlooking. I should be getting about 30 to 40 mins.
It weighs probably 250 lbs. So weight is low. so it must be the acceleration deceleration, or the quick change in direction. So captuing the energy from braking into capacitors is what I will try next. I have 4 cap boards that have 4 870 uf caps on each one from the snow blower. I'll try using those I think. A battery would get damaged I think if I allowed regeneration to charge them. It could spike to 120 amps for moments. I wish I knew things..........
I also think I'm going to pump air through the batteries while they run. I think my controller can. Read the battery T prong so monitoring battery temp is also big on my list.
If only I could interface with the D prong. Then I could make it mimic an ego tool
SCDC, Champion
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54,608 Points
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65,000 Points
A few tapped holes and a few mounted bearings. The rest is all bolt up.
Total cost to build was 800 plus the deck. I wish it didn't take forever to get to the final design but that's the process normally. The end piece is quite simple.
Of course that cost doesn't include batteries. So four 5ah batteries minimum needed.
Blue Angel, Champion
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179,968 Points
https://batterybro.com/products/samsu...
If you’re using 4 x 5Ah batteries that’s 8P, or 520 A for 1 second. Step that up to 6 x 5Ah (12P) and you’d be good for 780 A for 1 second. Keep the temperatures in check and you should be good to go! ;-)
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65,000 Points
I think I need to use capacitors to take the edge off of the batteries. Is this a good idea or not?
Blue Angel, Champion
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179,968 Points
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65,000 Points
- 70 Points
Well heres the first lithium-ion rider, price seems good.
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65,000 Points
http://www.meangreenproducts.com
This Troy built seems like a crap deal..
A 30" mower.... what is the point... That's tiny.
Mean green has it right with their monster mowers which are lithium ion powered
This mower has a 35 ah battery in it probably. Just enough to pull our fat butts around and mow a little I guess. This is why I say riders are a terrible idea. Why does it need to bring you with it. Walk behind or remote controlled wide area mower is the way to go.
Just my thoughts......
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65,000 Points
The Troy built one does not have the run time. No way. Not when the ryobi is claiming 75 ah I believe.
Assuming rider and driver are about 1000#
Mowing speed is 5 mph
It would take much more power to move it and a rider than 400 watts. Try like 1500 easy during acceleration, and that's a slow acceleration. Upwards of 6000 watts occur jusy to make the motors start for a moment of time.
5-600 to maintain speed. Upills easily 2500 or more.
I can't find a weight for the unit.
Up and down hills would give this rider I would estimate 20 minutes if run time.
1000 watts on the deck in full load.
2000 watts average to run it. Flat terrain less power required.
Losses in the system.
Probably 20 minute run time on 15 deg slopes.
Hp can be calculated using speed and torque. Torque is calculated from Mass and angle and gravity.
In their description it says "terrain type" - "flat and obstacles"
It's also not a summation of the watts. You can pull 3000 watts for half an hour. Or 6000 watts for 15 minutes.
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