ORIGINAL: Broken Wings
If we're looking at the front of the engine as if it were a clock IF the magnet was mounted above the keyway . 28degrees before top dead center is about 1 o'clock give or take. so the sensor would be at/around 1 o-clock if the magnet was mounted directly above the keyway slot.
That's what I'm having a problem with.
On my BGX the piston is at TDC when the sensor magnet is at 180 degrees.
In other words at TDC the magnet on the prop hub Max provided is straight DOWN, while the Woodruff key is straight up, assuming the cylinder head is also straight up.
So 28 degrees before TDC would be about the 7-8 o'clock position Or 180+28 = 208 degrees, since the prop spins counter-clockwise when viewed from the front.
Does my engine have TDC in a different place in relation to the sensor and Woodruff key?
The e-mail I got back from Max was even more confusing.