My Twist has an Axi 4130/14 outrunner with a 4S2P 4200mAh pack. I routinely get two 8-10 minute flights out of them, with battery management. I'm not flying it at wild 3D rates which might require full throttle a lot more than I use it.

I'm using a 13x8 MA wood Scimitar prop (yes, I said 'wood'). The performance is about the same as my APC 13x8. I just prefer wood props. The weight difference is only about 2 grams.

I'm thinking about experimenting with a 5S 4200 - 5000 mAh pack if I can find one that will fit into the Twist's fuel tank compartment. I'm sure that would curl my lip a little if I can find that.

There might be a photo of the engine setup and a short write up in Peter Young's RCR "Around The Circuit" column in a couple of months or so.

I'm still new to electrics and still experimenting, but if you have any more questions about my E-Twist (my name for it), just give a holler.

Bob