well i do some robotic related stuff in my other spare time and the new project is a brushless ETEK dc motor into my little cag with the appropriate modifications, along with a crapload of M1 lithium nanophosphate batteries (thank you ebay

) which should pump out a realistic 15hp and endless torque.
i made my own custom mini kart a while ago that had two 300w scooter motors at 36v and that was about the same performance as the stocker cag with no where near the top speed.
question i had out of curiousity though is what is the original weight of a cag motor with the exhaust on it, i forgot to measure it when i had it out but what do you think? i reckon around 6kg, + 1.5kg for the fuel and tank say?
at this stage it looks like 9kg for the etek and a each 36v 2.2ah battery pack is 1kg on the dot, and ill probably be using around 6 of those packs. so probably 15kg drive train weight in the end