Yup. Using the internal BEC. I also have a v2 that is holding up pretty well, but I am just going to keep using the v1. After the abuse I put it through and if it is still going strong, no need to mess up a good thing. I am going to add a cap to it to take a little pressure off since I don't have a fan on it.

For those that care about setups:

RC8
V1 MMM (top of case cut off completely, no fan)
1512 3d and 1515 2.5d
5s 4000 Zippys
Dx3r w/ Receiver
Geared for about 35-42 mph depending on track