Folks,
So far, I've owned a Zero S (2019), a Zero SR (2021), an SR/F (2020), and now I have an SR/S (2021).
About the only significant difference between the S and SR, I think, is that the S has a 7.2kWh battery, and the SR has a 14.4kWh. According to the current Zero website, the S weighs 313 lbs, the SR weighs 414---a difference of 101 lbs.
I have not been able to find a definitive answer anywhere as to the weight of a naked 14.4kWh battery, but from the above let's say a ballpark estimate is 200 lbs (101 lbs per 7.2 kWh).
The SR/S and SR/F both weigh about 500 lbs, give or take. So, adding a second 14.4kWh battery would take it up to about 700 lbs... which is about the same weight as a BMW K 1600 GS---which is also a physically huge bike, so there would be no problem making a Zero physically bigger to accommodate the battery space.
As another comparison, the Honda Gold Wing clocks in at about 800 lbs. Also huge and heavy---but well-balanced, just like the BMW. The Gold Wing has a 5.5Gal tank and gets about 42mpg -- giving a range of 230 miles.
So... why the heck doesn't Zero just make a touring bike that has 28.8kWh of battery, weighs 700 lbs, and has a range of over 300 miles in the city, 200 miles at 55mph, and 160 miles at 70mph? Heck, add another 7.2kWh and we're at 36kWh, about 800 lbs (like a Gold Wing), and the range will be 200 miles even at 70mph.
So we could strike at the ballpark of a Gold Wing with the same weight and same range.
I for one would jump at the opportunity to have a comfortable touring Zero with a range of 200 miles. And it's do-able right now---at least in principle.
Why haven't they done this? Is it on their radar at all?