Power and Runtime

[giftacrylic]

I currently run a 7XL on 16 cells and love the instant power and speed. I run on tracks and need a motor to finish a 10 min main. By bumping up to a 8 or 9XL, how much will runtimes increase and is the power difference noticeable (relative to the 7XL)?

BTW, the track is clay indoor, after watering is has good traction until is loosens up.

[coolhandcountry]

I average 10 min run with a 7xl as a basher and get 25 min on the 9xl as a basher. The power is not that big of a difference. My 9xl heated up less to. Not sure on 8xl cause never ran one.