mamba max on emaxx with 2 6s lipo packs (( HELP))

[mistercrash]

You cannot run your 6S lipos in series with the MMM. It is rated for 6S max so you will have to plug them in parallel if you run both of them at the same time. Plugging in parallel increases the total milliamps, not the voltage. Your two 6S 5000 mah lipos plugged in parallel will stay 6S (22.2 volts) but will double the mah to 10 000 which will give looooong run time. If you plug them in series, the opposite will happen as the mah will stay at 5000 and the voltage will double to 12S (44.4 volts) frying your MMM.

For gearing, you can use BrianG's website to calculate your top speed. I know you want your truck to be crazy fast but most people gear to go around 40 mph to keep the temps down. Brian works hard to keep this useful website up to date so feel free to donate something to show your appreciation. Here's BrianG's RC calculation website.

http://scriptasylum.com/rc_speed/_top_speed.html