Look at how other companies now make their ebikes. They use custom frames with large internal/ surface mounted battery and motor located at the bottom bracket area. This way they can keep the weight distribution and rotating mass unaffected, while keeping everything clean and tidy.


Now look at the e-brompton. They just slap aftermarket hub motor wheel on their bikes and call it E-Brompton. People have been doing that for years, at home. Development? What development? They could at least try something, like increasing the diameter of the main tube to house the battery. They hand make their frames, don't they?