The scaling thing is definitely a new concept w/ sims (well only FS One has it). It evolved out of the sim as we worked on various things.

Basically, anything that is set prior to the Scaling tabs defines the airplane ... that can then be scaled. The scaling can be simple, like 'grow/autoscale the plane by 2x, 200%' and let the chips fall where they may, or scale the plane up and then selectively over-ride items to add extra definition.

I find it easiest to go in this order:
- set the wing span
- let the weight autoscale, or set it to what I know it should be for the larger/smaller plane
- autoscale the power, or set the HP or set the prop speed to what I want
- autoscale the prop, or set the diameter to what I want (leaving the weight at zero to autoscale the weight)
- then go back and pick a different sound. In the menu, the sound files indicate the range overwhich they give proper sound. So the sound file RPM range does not define the prop speed. It just has sound in case it's needed for that RPM.
- then sometimes I go back and set the control throws
- I don't often swap from gas to electric, but that step is easy as shown in the screen grabs above (taking the gas Ultimate to electric).

So the steps are pretty simple and it seems to work 99.99% of the time. It's amazing when it comes to the amount of scaling. If a plane goes from say a 3 inch span up to 30 ft or 300 ft, the power can change by many many orders of magnitude. I would have no idea how to guess numbers like this ... It blows my mind that it all works. I think I've said that before in these forums.

Michael