UnoProject:
Does anyone have any past experience or know how to:
A method to save the results of the angular positions from the serial monitor?
Save what, how, where?
produce these angles as a voltage value?
What voltage? What relationship to the angle? Won't that just produce a sawtooth wave?
Easiest way to produce a voltage from Arduino is PWM output + low pass filter.
Incorporate an RPM count alongside the continuous angle position reading?
Just time how long it takes to take one rotation, or how long it takes for each pulse, and you can directly calculate rpm.
I have the flywheel diameter, weight etc of the exercise bike therefore a way to calculate the velocity and power and time taken?
Sounds like basic physics to me but your requirements are too ambiguous.
A simple W=2pif would calculate angular velocity but a way to code that?
Seriously?
float W = 2 * 3.14157 * f