[onewheelcop]

I was just going by simple math. May not be 100% correct, but it has to be in the ball park.
6 8volt T875's have 1020AH, and 8 6volt T105's have 1800AH. If you divide 1020AH by 20ish miles= 51AH per mile.

1800AH divided by the same 51AH per mile=35 miles.

going from 20 miles to 35 miles is way more than 32% increase. roughly 75% increase