Help configuring 18 fet Lyen Controller...

[Indubitably]

What I have:

1 Lyen low rds 18 fet delux regen controller.
1 Crystalyte 5302 straight laced into a 16" moped rim (aka a beefy 20" bike rim)
18 40ah thundersky cells.
24 "mini-bms" distributed style bms modules
1 50lb Walmart hyper insight suspension recumbent with custom triple tree clamp front end and dirtbike forks.

What I'd like to do:

Hit about a 35 MPH top speed.
Haul a couple hundred pounds in a trailer around without murdering my controller.
Hit hills with some gusto, zip around off road, and just generally feel a nice kick in my pants as I accelerate from a stop.
Use regen as my primary braking system.

If it is at all possible I'd like to pull this off using a simple 12s configuration. I could get the other 6 cells on the bike if I needed to, but these things weigh a shit tonne, and I'm just not all that keen on hauling an extra 10kgs around if can avoid it, since there is pretty much no way to get that weight any lower than seat level on this bike. Not to mention that my 2kw charger would barely be scratching the surface of the charge rate limits on 12 cells, never mind 18.

My motor does seem to be wound for almost comically high speeds, and if there is anything a 40ah cell is good at, its dumping assloads of current into the mains, so I'm guessing this should be reasonably feasable, but I'm just not 100% on what all is going on with the controller settings. Running my configuration at 38v and 60a through the ebikes.ca simulator yielded a top speed of 33mph, but with fairly dismal looking thrust curve, I'm guessing that PWM with take care of the poor thrust, but again, I'm just not sure what settings to fool with, or what limits would be safe.

Edit: OK, so after looking at the simulator a little more closely, it seems that for range reasons I am much better off running the higher voltage and laying off the throttle than I am running a low voltage and cranking up the throttle. So I suppose I will just have to figure out a way to make all 18 work and live with the weight, but otherwise the same question stands.

[Indubitably]

So, after obsessing over the ebikes.ca simulator for the last few days I've come to the general impression that there is simply no way to climb a hill at my weight using this motor. The bike with battery weighs about 150 lbs, and I weigh about 200 myself, which puts me on the bike at 350lbs, never mind hauling trailers and the like arround. From the looks of it, a mere 10% grade will burn up my motor in a matter of minuets, and even if it didn't destroy the motor I'd be sucking so much juice that what was a 150 mile battery on the flat, becomes a 5 mile battery in no time flat.

As far as I can tell, no direct drive bicycle hub motor can handle even a light grade at this kind of weight without getting bogged down to the point of being rendered effectively useless. If I changed over to an HT3525 and jacked my voltage up to about 120v by doubleling the number of batteries, I could push enough power through the motor to outpace the load bog, but then we are talking about a whole lot of money I don't have to spend, and a very very heavy vehicle, which creates safety issues. My first instinct was to go for a geared hub, because they seem to fair reasonably well when it comes to power consumption on the hill if you can keep them moving, but they burn out just as fast, and bog down just as much, as any high torque direct drive system.

Basically, the bottom line is that one way or the other I need to get a whole lot more power to the ground, or my bike is going to choke and die every time it so much as looks at a hill, so I'm thinking my only real choice here is a dual hub set up. Its still going to cost twice the power just like doubling the voltage would, but I'm guessing that it should more or less split the load in half so that each motor effectively sees half the weight when I hit a hill, which would theoretically alleviate my bog problems just like doubling the voltage would, and should dissipate heat significantly better to boot. A crystalyte ht3525 would apparently croak trying to haul 350 lbs over a 20% grade at 60v, but it just about manages 175 without too much difficulty. I'm thinking if I kick the voltage up to about 80v and dual either ht3525s, nine continent 2808s, or maybe a couple of magic pies (sans integrated comtroller) I should be in pretty good shape. I'll double up on controllers, but share the same brake switch, throttle and battery. Drawing that much current will be hard on the batteries, but thunderskys are rated at 3c, so as long as I've got each controller set at less than 60a I should be OK. I'm kind of digging the idea of dual regen's extra stopping power on a heavy bike for that matter too, and since almost all of my weight will be sitting basically smack dab between the wheels, I should get pretty decent traction to boot.

What do you guys think? Is my reasoning pretty sound here, or have I overlooked some fundamental point that throws my assumptions all out of whack?