ORIGINAL: sleepy23
the 6s combo will be atleast 10mph faster than the ss5800
Like Sleepy said, but remember that's measured in a Stadium truck. You're going to run it in an XXX-S Sedan....
Using stock gearing recommendation (88/24) , and a 6 cell 1.18+v pack, you can expect 46-50mph, easily. Play with the gearing a bit, (81/24), and you will be into the 50mph range with no sweat.