ORIGINAL: bbagle1
I think that would be way too much weight for that plane. Since you are using the HV controller why not use a 12s1p a123 pack. You could prop whatever motor for 35-40 amps and still have plenty of power and good runtime.
I'm thinking you are correct. In fact the more I look into this, I'm convinced that 2p on A123 isn't the way to go. I do however want to stick with 10s to make things simpler - that's the way they come out of the DeWalt packs (so it doesn't take more than one DeWalt pack to make a flight pack), and my charger will handle up to 10s.
I'm thinking 9s (or even 10s?) with the E-Flite 90. Suggestions welcome please.