LarryA
500+ Posts
Bob snap a centerline on the floor from the rear to the front of the frame, plus 5' more. Use a plumb bob dropped from the front centerline of the frame. mark the floor, then, repeat for the rear of the frame, then extend that line toward where the front wheel will be. I would double check that the frame is level before checking neck measurements
good advise from the guy's... agree side to side isn't so fussy, but should be perpendicular for looks, if nothing else.
if you use a dowel or shaft make sure you rotate it to check for runout. Rotate for max distance to the left of your chalk line then mark the floor. rotate for max distance to the right, then, mark the floor.......the true center is halfway between the marks, anyhow this is what i did, worked for me......good luck!
good advise from the guy's... agree side to side isn't so fussy, but should be perpendicular for looks, if nothing else.
if you use a dowel or shaft make sure you rotate it to check for runout. Rotate for max distance to the left of your chalk line then mark the floor. rotate for max distance to the right, then, mark the floor.......the true center is halfway between the marks, anyhow this is what i did, worked for me......good luck!