Obvious areas for improvement:
- standard J1772 3-7 kW charging
- higher voltage to support 30m fast DC charging. typically limited to 100A DC charge => need < 50 Ah battery pack => 240V+ for 12 kWh
- ABS
- continued aero and design tweaks
- continued cost reductions
ABS will almost certainly be available next year, as it is a requirement in the EU. Zero has tweaked the braking system every year since 2008, and it still frequently gets dinged in reviews for being poor quality/feel (especially the rear brake).
Zero's lack of a higher-power AC charging capability is a major gap. 120V charging works great for overnight and workplace charging, it's cheap and relatively light weight, but J1772 EVSEs are well-distributed in the US now and allow for significant charge to be regained while out and about - for example while dining, shopping, watching a movie, etc.
Fast AC charging is still not a substitute for fast DC charging. 70 highway miles - 1 hour of highway travel - takes ~8h at 120V, ~90m at 7 kW J1772, ~30m at 20 kW DC, ~20m at 30 kW DC. A 200 or 300 mile riding day would be very tolerable IMO with fast DC charging, and Zero has a sufficiently large battery pack to support high power charge rates.
Zero MAY tie the introduction of a higher-power onboard charger to a higher voltage power train. This would make sense if the charging system is expensive to redesign. And the higher-voltage power train is surely coming .. it's just a question of whether it arrives in 2015, 2016, or beyond.
Moving to a higher voltage pack will require Zero to do one of three things:
* switch to using packs/modules built from more smaller capacity cells, i.e. 250V 10Ah = 2.5 kWh, similar to existing ZF2.8 module. This will allow them to continue to use lower amp-hour man-portable modules for the X-series bikes.
* split power trains into high-voltage (S-series) and low-voltage (X-series) and continue to use existing removable modules for X-series
* drop the X-series bikes completely; S-series seem to sell much better, and the X, XU, MX bikes have already been dropped
I don't know if we'll see those changes in 2015; the DC charging standards are not settled or widely distributed outside of select corridors. But, most of the high-end EV sport bikes are coming with DC charging compatibility .. Zero and Brammo are surely anticipating doing the same, and Zero's engineers must have been working on something since the mild 2014 refresh..
Consider:
* Summer 2014 $32k 12 kWh Mission R, 30 minute 80% charge time
* Late 2014? $39k 12 kWh Lightning LS-218, 30 minute charge time (details TBA)
* 2015 $TBA (I guess $25-30k) 12 kWh CRP Energica
Imagine if Zero released the following for 2015:
* 6 kWh 40 kW S ZF7 (240V 25 Ah) $12-13k, 320 pounds, 3 kW onboard charger, 10 kW fast charging optional ($500)
* 12 kWh 50 kW S ZF14 (240V 50 Ah) $18-20k, 450 pounds, 6 kW onboard charger, 20 kW fast charging standard
* something special for the SR ..
* gearing optimized to put the efficiency sweet spot at 60-70 mph .. possibly 30T/132T?
* FX dropped
Aggressive but not impossible pricing. It would span roughly the same price range as the 2014 bikes ($12k to $20k), but their lineup would be significantly simplified and they would dramatically undercut the super bikes while still offering approximately the same fast-charging capabilities.
I'd be surprised if this happened for 2015 .. but pleasantly so. This or something like it is surely coming.. just a matter of when.