Hi, i'm new to RC and i'm looking to get a on-road car to join my local club. long story short i'm currently in the run for a TT-02R. I'm wondering though which engine i should put best in it. If possible i'd like to swap the engine and esc sometimes out with my traxxas slash to go of-road ( and crash :) ). I gave up on my slash some years ago after the engine broke and i replaced it with a slower one, it just wasn't fun anymore. So now i'm looking for a brushless set which hopefully can go into the TT-02 for driving with the club aswell as in the slash for just messing around. I'm just lost a bit with the KV and Turn numbers. The velineon engines can go 70+mph with 10T 3500kv while i saw a 5000KV 9T only doing about half that. i already read that for off-road you need to go high in turns and for on-road low in turns. Is there a golden midway that would make both cars "fast" ( but not wheelie 24/7 fast) ( e.g. my slash currently looks like a snail in the grass) in terms of KV and turns for on-road/off-road driving? i currently have my eyess upon a 12T 3700kv engine though i'm still not sure if that will be able to meet the requirements.