Originally posted by jswayze
Hmm... don't want heat the inside of my plane

Theoretically I could use very small value resistors as long as their ratio worked out correctly, right? How about two low-resistance trim pots to create the perfect 1.404 ratio?
You don't need two POTs, one would do, and if this one POT is a 10 turn precision trimmer (50 kOhms) you can set any ratio you want.

Code:
   		 ----------  INPUT
		|
		|
    	       ---
     	      |   |
   to ADC ----|---|-->
     	      |   |
      	       ---
        	|
		|
	 	 ----------  GND