Originally posted by BrainTeased
sorry for the stupid question but how are these cars getting enough power in 4 cell configuration? im interested in getting into 1/12 scale cars 
also are these cars hard to setup to make the car handle good, compared to setting up a TC 1:10th scale car?
thanks in advance
Cheers 
Power/capacity and voltage are 2 different things.
The cells we use (NiCD, NiMH) have A voltage of 1.2v.
The batteries you're using in 12th scale cars are the same as used in TC's or whatever kind of car (for example 3300mAH).
So the "power" or better called "capacity" stays the same, no matter how many cells you're using.
4-cell batteries deliver less voltage so the motor doesn't run that fast as with it does on 6 cells.
For example, A modified 4-cells 12th car is quite the same as A stock 6-cells 12th car.
About setting up A 12th car compared to A TC.
Both are very different, with 12th scale you play A lot with the tires (compound, diameter), tractioncompound and things like T-bars and tubedampers/damperdisks.
Since 12th car have A straight rear axle it's impossible change the rear camber and toe angle.
With TC's you're working pretty much all the time on the suspension, changing caster, camber, toe angle, shocks...etc.
Let's not forget both handle very different.
A 12th car is very nible and argile when A TC "does" the job for you (if you have A good set-up).
I'll hope this will answer your questions.