ELMOFO is my company, so I can clarify a few things.
Honda is not involved with these bikes at all. They have been building and testing their own electrics.
The section on the tank is not a charging port. It's an energy meter that measures energy into and out of the battery pack so it can provide accurate State of Charge and range information. The meter is mounted to the filler hole of the factory Titanium tank. We didn't want to cut the tank, so it sits a little high but hasn't been an issue yet.
Everything is a compromise with a conversion as we are working with the frame of a bike designed for a petrol engine, but the whole bike works surprisingly well. They weigh the same or less than the factory bikes. the center of gravity is lower and they are more powerful. We are currently running at >25kW | 90Nm and most bikes are running a 520 chain with 5.3:1 ratio.
I also own an Alta MXR, but it hardly gets ridden. In comparison, our conversions feel like 2-stroke 250s while the Alta feels like a 4-stroke 450.
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