Storck, I don't think you can be doing it wrong, but in the US the Gains have motor assist up to 20 or so mph and not 15.5, so maybe that makes a difference? I'm also purposely keeping the gearing at a point where I have to use some serious power to pedal - and trying to keep my speed up pretty high. I am purposely trying to get as much exercise as I can and using the battery as little as possible. I can't really do that with my other ebike since it's a single speed. I have no doubt that I'll end up going into cardiac arrest if I keep this up - but at least I'll look better in the coffin, right?