Good info so far.

Let me provide a little more information. I have some large glow 4s and 2s experience. I have the OS1.40RX in a plane and I really like it. However, I am thinking about getting a new plane. I would like to try 4s. The new plane weighs the same as the old, around 9.6 pounds. I am wonder ing about the 2s-4s power ration issue. I.e., it usually takes a 4s of higher cpacity than a 2s to produce equal power. So I am asking for help on this issue and to confirm that the YS1.40Sport is not underpowered compared to the OS1.40RX


while, I'm at it. Deos anyone ever use a Saito.