Why do folks not understand ohm's law?

[sleebus.jones]

Originally Posted by skellyo

However, please show me someone that runs 6S on a motor that wants to go the same speed they did on 4S.

*raises hand*

That's exactly what I did with my T4. In all of my messing around, I've settled in on 40 mph as being my "happy top speed". May be slow for some, but it's fine for me. Gets the job done and breaks less parts. So yes, when I add cells, I gear down. I add cells to get the efficiency advantage of running higher voltages. I ran a 2S A123 in there, but wasn't happy with it. I put a 3S A123 in there, and then geared down to something crazy like a 13T. I'm keeping the load (work) the same and increasing voltage, so yes, my amp draws went down.

Eventually I went to a 3300kv motor, because the 5700kv really limited my choices, and I got tired of hearing the car sound like a dentist's drill as it went by. I still geared for the same speed, so I'd assume my amp draws would be very close to the same, since I would be doing the same work.

IMHO, if you have a ESC capable of running 6S, you're throwing away efficiency if you run at 4S. That's why I run all of my rigs at the highest voltage I can. Otherwise it's like buying a 10MP camera, and then shooting everything in 640x480 because you don't want to buy a big memory card.

I do agree that if you add cells and do not change the gearing, you amp draws will absolutely NOT go down, they will do exactly as you show.