Spinning wheel has pauses after each rotation? there is a part of my model that I want to be spinning at the same velocity forever. However, every time the wheel turns its full 360 degrees it seems to slow down and stop toward the beginning of each rotation. I assume this is because my first and last keyframes are exactly the same. Outside of calculating the angle that the wheel should be on the last keyframe, is there any way to keep my spinning velocity consistent? Please help, thank you.
Most likely, your keyframes are moving in bezier curves. This causes them to slow down at the beginning and end. You could try going into the Curve editor, selecting all of the keyframes on the curve that corresponds to the rotation of your wheel, key "T" and select linear on the left side of the pop-up menu. This will solve your problem.

Now, instead of continuing to add keyframes until the end of your animation, you can key "Shift+E" choose linear extrapolation, and the rotation will continue forever.

Hope this helps! Happy blending.