Actually, though this may be considered off topic, I believe that I have found some evidence for Flat Earth solar mechanics:
http://www.sciencephoto.com/images/download_wm_image.html/R500584-Time-lapse_image_of_a_sunset_over_water-SPL.jpg?id=825000584
This is a time lapse of a sunset. Note the curve towards the north, as consistent with FE theory. In RE, as the earth is rotating in a circular manner, we would see a straight line.
You would not see the sun follow a straight line all the time on round earth. Also, the sun is going too close to the horizon to be consistent with FE theory.
Actually, the only time the sun would follow a (relatively) straight trajectory on a RE model is when it goes directly overhead while you are standing on the equator during one of the equinoxes. At any other time or location, the sun's trajectory is angled and would not seem to traverse a straight line through the sky.
Being angled, the trajectory would still be "straight" at the equinoxes, regardless of position. for the equator, it would go directly overhead, and at the poles, the sun would hug the horizon, going in a circle around the observer. For me at exactly 45 degrees north, it would be a 45 degree angle. In a perspective projection, such paths would appear as straight lines, as there would be no visible bending in any direction.
But if you took a picture of that on time laps photography, as it goes from east to south to west, the 45
0 path would appear curved. If you were on the Axial North Pole, it would just travel in one vast circle along the horizon around you at the times of the equinoxes. I suppose it would seem level from that perspective as well, but obviously seeming to traverse ring around you.