Allright, thank you for your thoughts. Here is what I did:
Hobbywing 150a ESC, 6S
Traxxas RX & TX
13:36 gear Ratio
168kv motor
This is fun, I mean really fun. It is not just transportation it is much better. I managed to travel with two 3s 5000mah lipos about 6km. I tried full speed and it...