Originally Posted by Ol' Bob
As an experiment, I went outside today and tossed a drink-coaster-quality music CD. It was a simple flat disc with no describable difference between sides except for the printing on one side. I tossed it, either side up, and with no dome or leading/lifting winglike edge, it was overstable. Shiny or dull side up, it turned hard left (throwing RHBH). It apparently takes some lift to go straight or turn right. One would think that dome would add to lift. How much lift is developed at the edge or over the flight plate would add up the the differences between the various molds, eh?
Ok, I'm not one of those fancy scientists with the degrees and the white coats, but I was thinking along these same lines of thought.
A domey flight plate would seem to me to create a larger profile into the air as it flies. The greater difference in volume created by the dome on the underside of the disc would translate into a larger pressure difference.
The result of a greater pressure difference, between the top and the bottom, as we all know from wing theory, means more lift, it aint rocket science.
More lift to me would mean greater instability, or, in other words, easier to turn over, or LESS stable.
Flat top discs, with less volume on the underside, tend to have less lift, and more equal pressures between top and bottom means more stability, in other words, a flat top wants to come down first, and the fastest way down is a hard turn, or going verticle.
Thats how I see it, and this is how my discs seem to all behave, I buy flat tops if I want hyzer discs, I buy domes for flippy, floaty stuff.