RE: Spektrum 7 channel radio stuff
Dont use a 4.8V with the 2.4 Spektrum. Yes, some have used it and got away with it and many haven't. I talked to a Horizon Hobby tech and he said to always use a 6V with the Spektrum 2.4 No it doesn't say last I checked in the radio owners manual, but he adimtted, it should. I have the DX7 and its a great radio. The 821's would work great, but you would be adding a couple ounces of weight campared to the Hitec 225's. Personally, I'd use them if I had them.