1. 4 is overkill IMO...I run 3s on mine and it flies
2. start w/17 and check temps often...it really depends on how fast you want to go
3. I run 7 10 3...I need to go a tad thicker in the center diff
Even on 3s you will want a bec of some sort..If running a bec, don't forget to remove the RED wire from the rx plug...don't cut it, just remove and secure it out of the way w/tape or hear shrink
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1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S