4.5 vs 5.5 mah usage

[DaveG28]

Ok clever ooplers, I am using SP v3 motors, and currently use a 5.5 in my 4wd. It's taking @2100mah out of my LiFe cells, with gearing to recover top speed then my esc set to a lot of punch to recover that side. However, I still need a bit more speed to get back into Lipo territory, my options are:

1. Go up one more pinion and then set mega everything esc punch. My temps are not as bad as I expected using higher gearing, will the lower LiFe voltage save temps or am I being lucky so far?

2. Put a 4.5 in to recover the speed. If I do this and run equivalent gearing to currently (probably take 2 teeth off the 5.5 gearing) can anyone roughly estimate (just rough is fine) what mah I am likely to take out of my cells given currently I am taking @2100??

Thanks all,

Amish!