This looks awesome, I need to replicate this. I had a go on a heavy e-brompton recently (the first electric bike I've ridden) and it put a massive smile on my face. I'm not a strong rider at all, largely as I have health issues to do with my spine, so I've had it in mind for some time that this type of thing will benefit me greatly.
I see you cold-set the steel fork; did you have any issues fitting the hub in the ti fork?