I find regen to be invaluable in the hilly areas where I live. Leaving my house I usually see 4 digit regen watt numbers for 30 seconds at a time going down hills plus, I can actually stop my bike when I need to. My problem is I recently raised my voltage to 72 volts and my regen stopped working. I understand I need to change a resistor in my controller but I haven't done it yet. I miss my regen. Actually, I'm looking to weld a disk brake mount on my front forks. If I blow a fuse I could end up sailing through an intersection. The v brakes are just not cutting it.