Wow just took this on a 25 mile ride (63* here woot!)
A couple things I noticed is the DD is much more power hungry than the geared. At least it seemed that way, although It could be that I was riding in 20-25 mph winds, and did some trails in there. The volt meter is necessary because I noticed with DD, you can only go so fast for a certain situation. For example, riding directly into the wind, I could do about 24 mph, but more than half throttle did nothing to increase speed, and just dropped the voltage on the pack, creating heat on the controller. So basically I just find the "sweet spot" on the throttle where I can keep cadence, but not start dropping the pack volts too much. I put some Andersons on my volt meter so I could monitor every couple miles, but I need to permanent mount that as I drained my battery to 3.0v per cell, which isn't the end of the world but I don't like going that low. Long story short I unplugged the batt and pedaled the last 3 miles home. It was pretty tough, that extra weight and magnet resistance is no joke lol, I was wishing my geared was back on there, but got some serious leg exercise, so that's ok. I would rather get the exercise then ruin my batt. Also did some more taping up and wiring on the batt pack.
Oh yeah, also I like the new fork, much better handling and feel than the suntour.
Also really like the DNP freewheel, it sounds way better than the old one, much more solid, and the 11T gear mates up well for 25mph pedaling.