Update:
I took the bike this week to get to work. Thats 24km one way - not flat, not with real mountains, but nice up and downs and some fast straight roads too. Monday was over 45min with all the stops to get things tight and hussle with CA settings and so on. I tried different settings almost every ride. Today as yesterday I needed 30min for the distance which is quite a nice time for the trip. Max speed was 67km/h so far.
I love my suspension and regret not a minute of all the work I put into it. The USD-8 has 220mm travel and my rear should have around 180mm as well. On my way to work there is a really nasty section on a (tarmac)farm track where you fly downhill with 60 and in the bottom there is a curve and in the middle of that is something like a deep water channel crossing the farm track in an angle of maybe 45°. On any bike i rode until now I would have been thrown down into the hedges without braking down to like 15 km/h. I would'nt trust my Yamaha DT2 going through that with 60 and even though it's a classic motorcycle it's still an offroad bike! With that ebike I don't brake. (Hmmm, really sounds like showing-off, but it's true. Amazing what suspension you can buy for around 450€)
The settings I found yesterday night do really work great for me, the power flow today was smooth but strong in the lowest level of PAS, I now have a nice "kick" when I need power via throttle, the overall trip was fast and the battery had some energy left. It's like cold fusion or something
No really, I recommend these settings for the CA
The settings for the phaserunner didn't change except "Torque up ramp" is 100ms now and "max field weakening current" is 23,5 now (I know, I know... temperature rose to a max of 128°C, but as Gary wrote, the CA handles it well and in the end the temp settles around 90-100°C. - talking about 24km with a speed rarely under 45km/h, so almost all the time with 1000W up to 1400W)
The rear brake disc loosened once even though I used the original magura screws and tightened them properly with a torque meter. That 180mm magura disc gets hot as hell! In front I use a shimano ice tec 203mm disc, which takes more of the energy, but stays significantly cooler. My conclusion: put a similar 203mm ice tec disc on the rear wheel.
One other thing: I bought that strange and cheap (12€) saddle from china via Ebay to test it. Reasons are obvious, aren't they?
However, it works quite well. Of course you have to get used to it and I don't want to sit on it for 150km, but it works - no problems whatsoever after cycling.
Did some slight changes at the rear:
-changed angle of chain tensioner. As the chain now uses even more of the teeth of the sprocket, it doesn't jump any more.
-the short mudguard did let lots of mud be thrown on the chain and the engine. I found an old mudguard from my sons former bike which is usually fixed under the triple tree and fixed that on the swing arm. The two pieces of the mud guard now slide into another when the suspension is working and the dirt is kept away from the center of the bike. Yes, it looks a bit strange...
I tell you, riding this every morning really saves your day!