Heard back from the Yarboro robotic mower folks over the weekend. Seems I can program it to skip the rows. The didn't indicate how to accomplish that, I guess you'd have to buy one to see that..
Theirs cuts about .25 acre per charge, so in the 3 acre spot it would take about 12 cycles to cut. There is an approximate 90 min charge cycle time. So that equates to about 18 hrs of charge time, not real sure how long it takes to drain the battery enough to charge it. Guessing 30 min's maybe? So if it is 30 mins that adds 6 more hours to the rotation. 24 hrs of use to make a single pass. Minus the actual row time. Might drop that to 20 hrs? Dodging customer traffic hours of 8-noon.
How fast does this part of the farm grow grass. I usually cut it twice a week in peak picking season, depending on how much rain we get. This one uses the razor blade discs so small cuts are the desired amount.
Seems to me to be "cutting" it too close and still isn't practical for a robotic operation for us.
The other kick starter model (lymow) shows it cutting with lawnmower type blades and cuts at a rate of 1.73 acres per day charge (I think that was the rate). So that would take about 2 full days of cutting. I think it could handle the additional growth when its been a wet week.
It's the first adopter (beta) issues I am afraid of. I don't really have time to troubles shoot out other stuff in my work week should it come up. Not too mention should I need parts if something happens. They have had people waiting for months for simple wear items (blades).
Once they become more readily available those issues will have been worked out. I would pay more for the mower by then but my time is also not factored in as part of the cost. Who knows I may have stopped farming by then so its all a mute point. I think we will always have some kind of garden/yard to cut till etc. though.