Dale,

what motors are you running on those 5s models? How much input power are they producing on what props?

How's the EU-1A doing on 8s? Are you flying dual 4s5000 packs in her?

I think I can deal with the space issue. What I can't deal with yet, so to speak, is the weight issue. IMO, energy density is not quite fully there yet in order to re-produce the classic piped two stroke experience. Basically, if we could keep the weight of a 6s5000 pack as is but double its capacity, we'd be golden. I feel that we also need higher Kv in our classic motors with 650 Kv being at the lower end of the rating on 6s for a piped two stroke experience. The heli motors seem to address this problem but their integrity might still be in question given that we are not gear reducing them but rather using them in direct drive configuration on some somewhat thin shafts. That said, I haven't heard of too many folks breaking the heli shafts yet on 11-12" diameter classic props.

David