The roto takes a 6 cell car pack with standard connector. The mAh rating on the packs is a measure of the capacity. The higher the number, the longer it will provide power. A 3000mah pack will last (run time) twice as long as a 1500mah pack under the same load and voltage. higher mah's also mean they're more expensive. You'll also need a charger for the batter for the roto so keep that in mind.
Yes, the plug does matter. There are cold plugs, medium and hot plugs. For break in, cold plugs will give you less trouble. I use Duratrax Carbon plugs for break in, and once it's broke in I switch up to Dutratrax Gold Racing plugs. The carons are cold, Gold hot. New engines will run better during break in on cold plugs, but he hot ones put out more power once the mill has some fuel thru it.
The 12 AA bateries are for the transmitter and reciever pack. * for the Tx, 4 for the Rx. Get spares for the Rx, you'll need them. Don't skimp on the quality. Cheap batts won't last under heavy loads of the steering servo.
Fuel matters alot too. I found Byrons makes my engines run hot (temp wise). I run Blue Thunder Race in my broke in mills, regular formula for break in. The regular formula has a tad more oil.
Don't worry about asking questions, that's why we're here. Just be sure to use the search feature, or look through the active threads before you post on something. Often times you can find an answer without asking. If not, post away.
