How does chain ring size reduction affect motor performance?
Recently, I replaced the 44T chain ring with a 38T chain ring on my Shimano e8000 assisted trike. I was going to ride in the Adirondacks for a week and figured that would give me a lower gear range. After I got back, I was playing with a couple of apps which are supposed to help customize the performance. On one of the apps, called eTuning, I saw a screen where I could tell the app about my drive train. The default selection for the front chain ring was 44T, but I wasn't able to change it without buying a "license" for $0.99. I'm not prepared to invest that kind of money without knowing what results I'm likely to get. So, if anyone knows what advantage is to be found by telling the motor what size chain ring is attached to it, could you please let me know?