Im currently using a 1x9 setup 50x11. shifting isnt the greatest. I use nuvinci 171's on my reverse trike builds, they work great but are stupid heavy. I would also like a Granny gear on the mountain bike so I dont want to hack up my top end by reducing the front sprocket. Im happy with my chainline using 42 Lekkie on the front of my BBBS02. So I guess my question is... Will an 11S or a 12S handle this type of torque with out bending up the cogs in the rear? the shift sensor is a must in my opinion and it works ok. Ive recently did the opensource firmware for BBS02 and it has an area where you can tweak the shift time that it dims the power out. I want to go CVT but need the range, but cant afford the IGH or a Rohloff. Any MTBer's out there running a heavy NU-vici 171? or an enviolo 380?
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I running a Toseven DM01 1000w/52 V battery on my ICE recumbent trike and have the OEM 46T chainring on the motor with a Rohloff IGH on the rear. Before I decided on going with the Rohloff to replace the derailleur/cassette which came with the ICE I used an online gear calculator to determine what the best gearing choice would be, One of the better ones is found here, https://www.ritzelrechner.de/?GR=DERS&KB=22,36&RZ=11,13,15,17,19,21,24,28,32,36&UF=2215&TF=90&SL=2.6&UN=KMH&DV=teeth. Enter your data for your current setup, decide on the variables (cadence, tire size, display, etc.) and then start selecting different cogs, derailleurs, etc. I would recommend making one (no more than two) changes at a time so that the results will be less confusing as if you make too many at once it can be hard to understand the effects of each one. Although I know you state that you can't afford a Rohloff I have to say that it is possibly the best use of $2k in my 76 years and wish I'd have sprung for one years earlier.