newbie here.. but not to bikes or cycling, retired, a carer, a long time cyclist, a good car & cycle mechanic, waiting on two hip replacements, been considering a lt/wt build mid motor for some considerable while, have everything I need, except mid motor and battery, & researching, which would be best, all the while aware that in my part of Uk, they haven't yet sorted the E situation and I will have to go same as mainland Uk with the advanced pedelec powered registration, insurance, tax, helmet etc etc.. mine won't be to UK spec, I need a throttle when my hips get sore at 20plus miles , nor do i think 40 n/metres torque is going to handle our steep hilly areas.. so I'm all ears for anyone who has used either Bfang or T/Sheng and can assist in my endeavours.. cheers will