7XL and 5S help ?

[JB3231]

I have the Nemesis Blue 7 XLT FD(??????) motor and was running 5S Lipo. I smoked the 5th cell and had to remove it and make a 4S pack out of it for the LST2.

I tried this motor with a 3S pack and there is no top speed at all. Is there a motor from Mike that I can replace this one with to run good on 3S? The 3S batteries are so much cheaper than 5S that it would be worth the switch.

I would like to switch to the MM esc and run 3S. Can the esc handle the amp draw? What motor would be comparitive to the 7XLT on 5S running only on 3S?

7XLT + 5S =50mph
??? + 3S =50mph

I hope this makes sense. Basically I need a hot motor that can compete on only 3S with the 7XLT on 5S.