I have been using my Hammer for about a week now, and it seems to be working okay so far. I am also using a KICKR2 so I have something to compare this Hammer to. The 20 lb flywheel of the Hammer seems a little smoother but it is certainly not much different than the KICRK2 with a 12.5 lb flywheel, as I was expecting a substantial difference.
Nonetheless, the reason I am here is because the resistance of my Hammer seems to lag behind a climb. It is really bad to climb up the escalator with the London route. The resistance basically kicks in late but then it also releases late on top of the climb. Also, the 15% resistance seems much harder with the Hammer vs. the KICKR2. With the KICKR2, I have been able to grind up to the last section of the top of Zwift mountain at around 5-7mph with Trainer Difficulty set to 100%. With the Hammer, I get stalled immediately when I hit the last steep section of the climb as I can barely turn the cranks. Does anyone have any of these problems? Thanks!