Zero ZF9 vs Brammo Empulse R: Spec Battle

So, OK. It looks like the Empulse has some real specs. Time for a spec battle. Here you go, from the spec pages on the respective bikes except where noted:

Zero ZF9 Brammo Empulse R
City (EPA UDDS) 114 miles (183 km) 121 miles (195 km)
Highway (commuting, 70mph) 63 miles (101 km) 56 miles (90 km)
Type High efficiency, double-stator axial flux permanent magnet, brushless motor with integrated forced air cooling. 42 ft-lb @ 3800 rpm. Permanent Magnet AC (PMAC) – Water Cooled 40kW, @ 8,200 rpm (54 hp), 63Nm (46.5 foot pounds)
Controller High efficiency, 420 amp, 3-phase brushless controller with re-generative deceleration

(Sevcon Gen4, Size 4, 3-Phase controller)

Sevcon Gen 4
Top speed (max) 88 mph (142 km/h) 100 + mph (160 + km/h)
Power System
Type Z-Force™ patented Li-Ion intelligent power pack Brammo Power™ BPM15/90 Lithium-Ion ( NCM Chemistry)
Maximum capacity 9.0 kWh 10.2 kWh (max)
Nominal capacity 7.9 kWh 9.31 kWh (nominal)
Estimated pack life to 80% (city) 308,000 miles (495,000 km) 1,500 cycles to 80% capacity (100% DOD) (ED NOTE: @ an average range of 70mi, that’s about 100,000 miles.)
Charger type 1kW, integrated
Charge time (standard) 9.0 hours (100% charged) / 8.0 hours (95% charged)  Level I maximum charging time: 8 Hours. (0 – 99% SOC, no cell imbalances)
Quick 2x charger time (accessory) 4.9 hours (100% charged) / 4.0 hours (95% charged) Level II maximum charging time: 3.5 Hours. (0 – 99% SOC, no cell imbalances)
Quick 3x charger time (accessory) 3.1 hours (100% charged) / 2.7 hours (95% charged) Every 10 minutes of Level II charging adds up to 5 miles of range
Quick 4x charger time (accessory) 2.4 hours (100% charged) / 2.0 hours (95% charged)
Transmission Clutchless one speed IET 6 speed gearbox with multi-plate, hydraulic activated wet clutch
Final drive 132T / 28T, Poly Chain® GT® Carbon™ belt Direct Chain Drive (14/48) 520 O-ring chain
Chassis / Suspension / Brakes
Front suspension 38mm inverted forks with adjustable compression and rebound damping Fully Adjustable 43mm Marzocchi Forks
Rear suspension Direct-link shock with adjustable spring preload, compression and rebound damping Fully Adjustable Sachs Shock
Front brakes 2 piston hydraulic, 310×4 mm floating disc Dual 310mm Brembo floating disk with twin four piston Hydraulic Brembo Brake Calipers, Radial Mount.
Rear brakes 1 piston hydraulic, 220×4 mm disc Brembo single disk with dual piston Hydraulic Brembo Brake Caliper
Regenerative Braking Yes  Yes
Front tire 110/70-17 120/70-17 AVON AV79
Rear tire 130/70-17 180/55-17 AVON AV80
Front wheel 3.00×17 17”x 3.5” Marchesini
Rear wheel 3.50×17 17” x 5.5” Marchesini
Wheel base 56.6 inches (1438 mm) 58.0” 147.32 cm
Seat height (standard) 32.8 inches (832 mm) 31.5” 80.0 cm
Rake 23.1 degrees 24°
Trail 3.0 inches (76 mm) 3.8″
Curb weight 341 pounds (155 kg) 470lbs. / 213kg
Carrying capacity 340 pounds (154 kg) Cargo Capacity 365 lbs. / 165.6 kg (805 lbs. / 365.1 kg total combined motorcycle, rider, passenger and cargo)
Starting MSRP $13,995.00 $18,995.00

The specification page for the Zero is here.  The Brammo Empulse page is here.

* I’m pretty sure they’re using a fairly stock Motenergy ME 0913 motor. At  0.15 Nm/amp, and 420A maximum, you have 63Nm


11 responses to “Zero ZF9 vs Brammo Empulse R: Spec Battle

    • Unfortunately, no acceleration numbers are available at this point, but yes, from what I’ve been able to gather via the grapevine, there’s a significant difference.

  1. Pingback: Zero ZF9 vs Brammo Empulse R: Talking With Wes Siler « The Electric Chronicles·

  2. Hey Ted. Been too long since I have checked into your blog. Just thought I would add that Brian Wissman mentioned the size of the on-board charger in the Empulse in my interview with him. If memory serves it is a 3kWh charger.

  3. Oops, this is an older post. Sorry. Obviously, the 2013 Zero is far superior to the 2012 Zero and much closer to the Empulse performance-wise, though I still expect the Empulse to be quicker.


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