Go to the
www.hitechcreations.com website, click on the "community" button, and check out the links in there. Look under "useful links" and "ahwiki". The useful links page has a plane comparison site plus the official AH trainer site, which has a ton of info. You might even find info on the tradeoffs with the stall limiter on those pages.
Also, DokG made this site some time ago:
http://gonzoville.com/ahcharts/index.php It has plane performance comparisons, but it's primarily focused on climb rate, speed, and weapon lethality. It doesn't have turn rate info, but he got his data from other sites that might have turn rate data. You might try asking him if he still has those links or that data.
Turn rate data is hard to come by, but keep looking. If you can't find anything useful, you'll probably need to come up with a test protocol yourself and spend some time flying circles with a stopwatch.
As for the usefulness of the stall limiter, all it does is artifically keep the player from applying control inputs that will exceed a preset angle of attack that is somewhat lower than the actual critical angle of attack. Only HTC knows the exact values used, although someone well versed in aerodynamics could probably make some very close guesses based on 3 things - 1. basic aerodynamic principles and equations, 2. how slow you can get the plane in level flight with stall limiter on and off, and 3. some smart guesses on what kind of airfoil profile is modelled for any given plane. Even without knowing what kind of airfoil is used, you could probably come up with a close estimate of what percent of max lift you can get with the stall limiter enabled, and that would give you a corresponding estimate of how close to the critical angle of attack you're getting. Plug that back into basic aero equations and you can guesstimate how much (as a percentage) turn performance you lose.
On the other hand, with some airfoils going to the max lift AOA will dramatically increase induced drag, so energy bleed might rise so fast that *most* players would benefit from using the stall limiter for no reason other than it would be easier to keep their energy and speed up. The real life F-16, for example, flies with the "stall limiter" on all the time. Yes it might give up a few percentage points in absolute turn performance, but it simply doesn't matter when flown by the average fighter pilot. But get an F-16 going too fast when flying BFM against a plane without an AOA limiter (and flown by a reasonably talented pilot), and you might see the viper driver get surprised. Been there, done that, took a valid aim-9 shot and called the kill.
