Yes I know Luke ( Liveforphysics) . I have been a member of the Endless sphere from the very beginning.
Yes he has built some crazy ebikes.
Deathbike started to get real fast from about V4.0
https://www.youtube.com/watch?v=Sk_bmSRog-c
I think V7.0 is pulling 0-100kmh in about 2.8 seconds and he wants to get it under 2 seconds.
The early versions were still fast bikes.....this video of one of the early versions is a classic
https://www.youtube.com/watch?v=NCpzXIP ... OFcQWhmtiQ
Kurt