the GENS is 7.4v I did not get 8.4 because the book says so 7.2-8.4 NiMH or 7.4 LIPO.. i have ordered too some aluminium parts + a LIPOlow voltage tester. so bro you know ? you change my mind ill keep the Volcano.. TY

what else can i do on Volcano for more performance and durable? i ordered a
Aluminium Steering Hub+mount.. TY