For years I've been running an 800 watt brushed motor from from a scooter and adapted it to my bike. I used a Curtis Controller with no real limits on Amps. I ran SLA for a long time and then used a NIMH pack. Both packs died and I had to take a break for relocating to the East Coast. I'm building a hub motor kit bike for my wife, but would like to get mine going again, but wonder if I should stick with my 9 year motor. I plan on using some 36V Lipo packs at 10 or 15 AH, but keep eyeing up the newer RC motors. Anyone have an idea how much I'd gain from going to a newer motor? I'm nearly certain I could get something from it, but just don't know how to figure it out. The newer battery technology is so good, I'm wondering if the motor comparison is the same. Thanks for any info on this...and if there is already a topic on this one, I'll read if you can point me in the direction....