Hi im Adam

I am in the process of building my Serpent 977e roller and nearly finished. I am wondering if anyone can give me some info on the best motor package out there for it?? I would prefer one that i do not need to solder ( except for battery leads). I am looking at a castle 2650kv or castle 2200kv? I have some fast cars already, so def would like something with a bit of punch to it..... Advice would be muchly appreciated

Thanks