My math was done hastily, there may be errors.
A good reference for physics/science math is Hyperphysics:
http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.htmlI drew your stator to scale (not as hard as it sounds for a former CAD jock like me) and got 7/8" space between your wedges. Wire wound between the wedges will lay relatively flat on the first layer and the second will settle on the grooves made by the first. So a fair guess of the number of turns per layer is just the space across divided by the width of a wire. 0.85 / 0.064 = 13 turns, or thereabouts for 14 gauge, per layer.
Each turn is a loop, each loop encloses the laminations. Taking your estimage of field intensity at face value (I can do no better right now) at 1.5 T and let's also say that it's evenly distributed through all the laminations (again I can't argue against it right now).
So that means that through every loop of wire 1.5T of mag field passes, and when the next magnet has come and gone the field will be -1.5T, meaning it points the other way, now. The total field reversal is 3 Teslas.
Back to geometry, your laminate cross-section is 2 inches by 0.6 inches, or 1.2 square inches. Now we must turn to the metric system because flux calculations in imperial is insane. The area is 774 square millimeters. Also worth calculating is the length of each turn: perimeter of the rectangle is 139mm. For right now all we need is the area enclosed in each loop, and get back to wire perimeter later.
The definition of FLUX is the total field that passes through a loop at right-angles. Your loops fit this description, so through each turn, you can say that 1.5Teslas pass, and there are 26 turns if you put on 2 layers of 14 gauge.
1.5T * 774 mm*mm * 26 = 30186 microWebers.
This should be done in "meters" not "millimeters" so there are 1 million square mm in a square m:
30186 / 1,000,000 = 0.03 Webers.
A Weber is the standard unit of FLUX. It's at this point that you can't mix up "field" and "flux". Kinda like mixing up "Watts" and "Watt-hours"; they mean different things. The flux is a unit of the field within a certain area, pointed in a certain direction. Once the flux goes from N to S it will reverse the direction. This is the effect that causes electrical potential to be created by electrical machines of all types. The voltage you measure is scientifically called "electromotive force" or EMF which is produced every time the total Flux changes. If the flux is constant there is no EMF. Change the flux rapidly or change a large flux more slowly, either way it will produce an EMF which makes electrons move.
240 RPM is a nice round number that suits the speed of WT rotor blades at the size of machine you are building. 240 revolutions per minute = 4 revolutions per second. Your rotor and stator have 8 "poles". The flux will reverse completely 4 times per revolution. Together your stator will experience 4*4= 16 flux reversals per second.
We're getting close to the end. The formula for the EMF is to multiply the total change in flux by the rate at which it changes.
EMF = 2 * Flux * frequency = 2 * (0.03 Weber) * (16 per second) = 0.96 Volts
Each phase has 8 coils in it they will all be in series so their voltage will add: 0.96 * 8 = 7.68 Volts
If you connect the phases of your stator in Star, then the voltages on the line will increase by the square-root of 3.
7.68 Volts * 1.73 = 13.3 volts.
That is roughly good enough as a cut-in voltage for battery charging a 12 volts system.
The variables under your control are the wire gauge and size of magnets. Increasing the magnets will add more flux (but at diminishing return) and reducing the wire size will increase the number of turns. Doing either or both of these things will increase the voltage, and it's quite feasible to re-do this to size it up for a 24 volt battery system.
On the other hand, we haven't worked out the amount of current that will flow. I'd better hit the "Post" button because I've typed enough already!