U're right. I use fans as well on both esc and motor. it gives me worry-free bashing, especially on soft sand w/ my truggywheels (on a buggy). lower temperatures are also good for the motor's efficiency (losi 1700 on 5s). on the track (just for fun, not very fast track) temps are like that around 40deg c., now w/ the torsen center diff a bit higher.

of course, fans won't change or help a crappy motor and wrong setup.

I just converted the 7 pounds into kilogram, 3,2 kg for a truggy, I'm impressed!

pls post some pics.

There are pics somewhere on this forum. I can't search right now but will try later. I should also note my friends don't use heatsinks on their medusas while I have oe on my motor. I have a 1/10 truggy that I broke the fan on and it ran much hotter than with the fan so they do make a huge diff. Once I get better 4s packs I will definitely run those but for now the 3s work fine.

3S packs in parallel can push out quite a bit of current and hold some serious voltage so I can see how they can still take out a nitro. You could probably hold over 12 volts (for a while) with 3S on some quality packs vs 12 Volts on some crappy 4S packs on voltage drop. I've bashed with some friends that have some pretty serious nitro setups and my 7xl just makes them look slow. I think its all the instant torque vs nitro having to spool up, but these electrics are pretty impressive.