Ballast Placement CG Caculation
Allright boys, I think I found the right thread for this question. I overpowered an aircraft making it nose heavy. The obvious and easiest choice is to stick some lead on the tail and make it hang at the spot I want. We all know dead weight is not the best answer. I have plenty of weight already on the aircraft in the form of servos, batteries, RX etc. The battery box is aft of CG as I can manage so it is out of the equation. The rudder and elevator servos are forward of the CG and this is what I want to move back to compensate for the larger engine. Obviously I will have to build a mount for a servos somewhere back on the tail boom to move the servo's location. What I want to avoid is randomly punching holes in my airplane and trying and erring my way to a correct servo location. I understand that I really just need to remove my chosen servo, hang the plane, place the servo in the spot I want it to balance, and then go to work. Really, I am looking for more of an academic exercise.
Does anyone have a link or knowledge on how to take the known balance point, the known weight of the ballast (rudder servo), the future balance point, with X (unknown) being the placement of the ballast to achieve the desired future balance point? I am going to go ahead and get my plane balanced the caveman way (putting the servo on the tail until the plane balances).
Any questions? OK 1,2,3, GO!!
Thanks