Finally Newb reprogrammed my controller to get all voltages working again, OMG I never want to experience 10 or more arcs in a row, poor plugs as we tried various settings to get things right.
@ 65amps the hub should keep a continuous rating of 2.5kw with out overheating ever @ a top speed of just under 40kmh in 20" wheel. If bogging down to 25kmh the bafang zone kicks in and if they both bog down then I can gear down the bafnag alone down to about 8kmh before it starts bogging down to 5kmh.
with 18 less cells the whole bike both feels good again and looks much better.
However, the big question starts whether the hub is worth being on the bike at all at this power level. Without a doubt the hub will overheat for steep stuff to a stand still and not be able to pull through the tough parts. The bafang alone without dragging around the hub and in a normal size wheel would probably do equally well albeit slower.
It's a question of redundancy and goals. If I lose my rare riding buddies I am pretty sure I would pull the hub off to go back to single tracking. My greatest concern is whether bafang would handle the same kind of abuse single track rough riding requires.
The current gearing of the bafang is rather complex to theorize...
You would think it will be more efficient from zero to top speed on a flat right?
But the reality is, it is much to slow in 30t front to go through 7 sprockets or just imagine 10!
On a steep mountain it's great to have choice of what to settle on but on anything else it is much to slow.
You can use human power to pedal up to 25kmh in 7th much faster than you could ever do with bafang gear changes.
With the bafang unmodded you need to power off for each gear change and there is a ramp up of power for on and a delay for it to go off.
0-25 would take ages to go through all the gears.
On off roading as in the video I post above, you can see that many times you go from various inclines in a matter of seconds, from up and down to various lengths it show that gear changing is not suitable. The hub motor has such a big band of power delivery that you can power through so much more complex terrain. Yet, the mid drivers don't seem to get this concept.
Having said all this on another topic, I need to get back to doing regular exercise. A high powered set up does allow exercise but it feels wrong to pull 50kg in pedal power and looks dumb too.
Goals are always changing and trying to achieve goals we get side tracked with little issues along the way which seem to create other goals. I sometimes forget that I originally loved single tracking on my mountain bike with know electric components. I enjoyed the downhill so much that I would often walk for ages up steep mountains to ride down them. I wasn't in rush to get anywhere and I am not in a rush to get anywhere now.
The bafang seems to have answered the original goal of getting to the top without walking most of the time. So I really wonder whether I should just pull off everything of my bike and just run the bafang for a while.
I could go single tracking everyday before work on 12s2p bafang.... only thing stopping me is not being able to go riding with the other high powered guys which is dam fun on the rare occasion that it happens.
So many directions to take, if nobody would hassle me about spending even more money on bikes, I'd bafang this $2k bike. It's the cheapest DH I can find with big battery room... Only thing to change is the bb area and one of the cables under the downtube would need rerouting.
:lol:
