Would twin brushless setup with dual MMM's work withmy set up?

[Rivermaxx]

Trust me he knows that all batteries are not the same. He is very knowledgable and knows his $hit. 161 mph car proves it. Maybe he was telling me to do the 3volt figure because of the batts I plan on using or maybe it was a form of handicapping to get real world results like drag & wind resistance IDK.