Greg Wilson

Many thanks Marc and Simon - your help is very much appreciated and has given me the answer I was looking for. I had kind of guessed the calculation but now I have the formula I will be able to apply this to my other electric models which are mostly of my own design. 

Hoping some of you out there may be able to help me with the following:   I currently have a ballistic model which produces 440 watts of power and weighs 19.75ounces/563grams. I would like to know the power to rate ratio and the simple formula for calculating this.   Many thanks in anticipation!!!   Greg

I have recently got a Spectrum DX7 and having problems setting up. I am referring to the DX7 Tx battery which is 1500mah ni-mh. I have blown up my JP charger so now i need to charge my batteries using my field charger - therefore i need to know the polarity of this battery.

I would like to know which one is the positive wire from the DX7 supplied battery. any help would be appreciated