Finding the centre of undrilled steering wheel?
Discussion
Not sure if you can do this directly on the wheel or if you should draw round it onto some cardboard first...
"Take the corner of a piece of paper and place it on the inside of the circle on one of its points. Mark the two other points where the paper intersects the circle. The chord connecting those points is a diameter. Repeat, and the point of intersection of those lines is the center."
Found in the comments to the traditional method shown here: http://www.youtube.com/watch?v=YOJbWo41gU0
"Take the corner of a piece of paper and place it on the inside of the circle on one of its points. Mark the two other points where the paper intersects the circle. The chord connecting those points is a diameter. Repeat, and the point of intersection of those lines is the center."
Found in the comments to the traditional method shown here: http://www.youtube.com/watch?v=YOJbWo41gU0
How about:
Create a rectangular 'frame' around the steering wheel, using sections of straight timber. Ensure that the corners of the fame ar perfectly square (use a set square).
Run a piece of string or straight edge across one diagonal of the 'frame'. The centre of the diagonal will be at the centre of the steering wheel?
Create a rectangular 'frame' around the steering wheel, using sections of straight timber. Ensure that the corners of the fame ar perfectly square (use a set square).
Run a piece of string or straight edge across one diagonal of the 'frame'. The centre of the diagonal will be at the centre of the steering wheel?
If it's flat, draw around it onto a sheet of paper.
Cut carefully out, then fold the circle in half, then in half again. You should end up with an ice cream cone 2D shape.
Cut the 'tip' of the shape then unfold. Hold unfolded circle onto wheel again and mark through hole in the middle of the template.
Works in my head anyway
Cut carefully out, then fold the circle in half, then in half again. You should end up with an ice cream cone 2D shape.
Cut the 'tip' of the shape then unfold. Hold unfolded circle onto wheel again and mark through hole in the middle of the template.
Works in my head anyway
Piece of string and a pencil.
Tie the pencil to the string, give the radius a guess, attach the loose end of the string to the rim then use the pencil to mark near the centre of the wheel. Move the string around a few points on the rim and repeat marking. Repeat until the lines repeatedly converge on one spot. This should be the middle.
Tie the pencil to the string, give the radius a guess, attach the loose end of the string to the rim then use the pencil to mark near the centre of the wheel. Move the string around a few points on the rim and repeat marking. Repeat until the lines repeatedly converge on one spot. This should be the middle.
PublicDrifter said:
Piece of string and a pencil.
Tie the pencil to the string, give the radius a guess, attach the loose end of the string to the rim then use the pencil to mark near the centre of the wheel. Move the string around a few points on the rim and repeat marking. Repeat until the lines repeatedly converge on one spot. This should be the middle.
That will work if you get the radius spot on. If it's incorrect the markings will not cross all at the same place. But with enough goes you'll end up with a small shape in the centre of the wheel which should be very easy to find the centre of. Tie the pencil to the string, give the radius a guess, attach the loose end of the string to the rim then use the pencil to mark near the centre of the wheel. Move the string around a few points on the rim and repeat marking. Repeat until the lines repeatedly converge on one spot. This should be the middle.
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