I have a 5S pack that weights 150g less
and is enough to drive 12 minutes races with my JQ, so less cells doesn't necessarily means lighter car.
The ticket would be a very small 6 cells pack with a 4 pole little motor with about 1200kv. Then it would be VERY light, because the system would be way more efficient compared to 3S
As soon as you get low with the voltage you get high with the amps so your system heats up and your runtimes fall so you'll need more capacity (=weight) from your lipos to compensate. That's why I would stick with a 1/8 system on the EB48.
To give you a comparison:
T8 1400kv = 341g
MMP = 81g
Savox 1258TG = 52g
Gens ace 5S 55C 2200mah = 297g
Total = 771g, your system is 885g. So all in all the car would weight less in 5S, and I'm sure the system would be cooler too. And I guarantee you would have enough power in 5S 1400kv
Anyway good build, I hope to see other ones very soon
. I think you're the very first one I see running Jconcepts double cross tires, these are the ones I use for training all the year