Dumped some snapshots from the video on
Google+.
0:29 Empulse prototype on dyno. You can see the Empulse concept battery modules and the Enertia top fairing. IET clutch is present and accounted for.
1:04, motor coupling to transmission. The transmission outer casing surrounds much of the motor, but it's still worth looking at how large the transmission is compared to the motor. IET should substantially improve performance over the direct-drive motor. How does it compare to a direct-drive motor sized as large as the Empulse motor + IET combination? Moot point for now.
1:25 shot inside what is clearly the
2011 Empulse RR battery pack. The pack is split into two modules, each module consists of six "slices", each slice is a set of 28 cells organized into a 4x7 block. 2 * 6 * 28 = 336 cells, at 3.7v 10 Ah each this gives us
12.4 kWh.
Assuming Brammo is using these same capacity cells for the Enertia Plus, then I was wrong about the basic cell. A 10 Ah cell means the BPM 44/70 module is actually a set of 7 cells in parallel and 12 sets of cells in series, 12s7p = 84 cells in the module. Two modules gives us 168 cells (24s7p = 24 series 7 parallel), which is indeed exactly half the number used in the Empulse RR race bike.
1:28 BPM 15/90 module. Using the same naming convention as the
BPM 44/70 module, this makes this a 15 V 90 Ah module (1.33 kWh). 36 cells in a 4s9p configuration.
2:11 Side shot of the modules arranged on the Empulse. Differing from the Empulse concept and like the Enertia Classic and the Enertia Plus, the Empulse modules are arranged on the upper and lower sides of a battery rack "spine". The modules are staggered, with six modules visible (four upper two lower).
Now the question is.. how many modules and what configurations will the bike ship with?
* 5 modules would give 74 V 90 Ah, 6.7 kWh.
* 6 modules would give 88.8 V 90 Ah, 8.0 kWh. Same voltage as the Enertia Plus, same pack capacity as the Zero ZF9.
* 7 modules would give 104 V 90 Ah, 9.3 kWh. Exactly 50% more capacity than Enertia Plus, and 3/4 capacity of Empulse RR. Same capacity as an
earlier guess, but I was wrong about the common cell capacity (10 Ah instead of 35 Ah).
* 8 modules would give 118 V 90 Ah, 10.7 kWh. Same capacity as an
earlier guess, but different configuration.
