I have been toying with the KT controller rear hub idea also and looking at Grin Hub motors. Most of those kits online I have seen have silver rims and I just don't like the cheap look of them.
got any pics of your build?
I just bought one of these on Fleabay and I want to use a Tszd2 and wondering if anyone here has any experience with this model bike? https://www.trekbikes.com/us/en_US/bikes/hybrid-bikes/dual-sport-bikes/dual-sport/8-3-ds/p/16291/
I am going to try these out before attempting your method https://www.amazon.com/Grin-Technologies-Bottle-Bob/dp/B078T6QRQB/ref=cm_cr_arp_d_product_top?ie=UTF8
I think @PedalUma wore me down. I am looking at getting one of these and putting a TSDZ2 on it. https://electra.trekbikes.com/us/en_US/bikes/electra-bikes/loft/loft-7i-step-over/p/16806/
Anyone have experience with this bike?