RE: Extra 330L-EP Extreme 3D RC Acrobatic Plane ARF
That's the plane we are talking about.
I'm also using those same battery packs.
However that Castle ESC has a fairly heafty price tag.
Why not just use one of these instead: [link=http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=7341&Product_Name=Hobbyking_SS_Series_90-100A_ESC]Click me![/link]
However you'll also need to wire up your own EXTERNAL BEC, as that ESC does not have it's own...
Most high power ESC's do not come with their own BEC's.
If you look at the photos on the first page of this thread, you'll see the picture of my plane where the inexpensive 9.00 BEC is visible.
I used the ESC indicated above, which is mounted below the motor.