DIY Degree Wheel

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Old March 10th, 2011, 07:47 AM
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Where were you in '72?
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DIY Degree Wheel

Does anyone have a scaled electronic copy of a degree wheel for olds?
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Old March 10th, 2011, 08:25 AM
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I have a generic one. Does this meet your needs. The two times I have used a DW the bigger it is the easier it is to read/use. I have no idea what they are worth.



I do not know what engine this is "for" so the "stock balancer" comment ignore. Click on it and it should be a larger file.

Adam
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Old March 10th, 2011, 01:28 PM
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Thanks Adam...your a star!
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Old March 10th, 2011, 01:59 PM
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...also, if you print out at 69% of image size, you will get 5-11/16 outside diameter.
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Old March 10th, 2011, 02:53 PM
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Just buy the cheapest generic (i.e., Chebby) degree wheel you can find and drill out the center hole to fit the Olds crank bolt. That's all Mondello does for his high dollar "Oldsmobile" degree wheels. They even still have the Chevy three bolt pattern for the balancer on them.
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Old March 10th, 2011, 04:19 PM
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I made one once that I printed on a CD label.

As far as the 5 11/16" thing goes, this is one case where size doesn't matter.
Print it out as big or as small as you want. The angular relationships won't change (it's a geometry thing).

- Eric
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Old March 11th, 2011, 10:47 AM
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Originally Posted by MDchanic
As far as the 5 11/16" thing goes, this is one case where size doesn't matter.
Ah, but it DOES. The angles may not change, but on a larger diameter wheel the degree marks are farther apart at the circumference and thus much easier to read. The larger wheel will make it easier to get a precise reading of the angle. Note that pro engine builders use a very large wheel and a pointer made up from a bent piece of welding rod or something similar.
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Old March 11th, 2011, 11:20 AM
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Originally Posted by joe_padavano
... on a larger diameter wheel the degree marks are farther apart at the circumference and thus much easier to read. The larger wheel will make it easier to get a precise reading of the angle.
Didn't mean to imply that larger wouldn't be more helpful (provided you've got it attached to a rigid backing), just that there was nothing magical about that extremely precise "5 11/16" number, and that there was no need to obsess over the printer settings.

Whatever size is easiest to use is the best for you to make it. It will remain accurate.

- Eric
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Old March 11th, 2011, 02:50 PM
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Thanks guys, good advice 8-1/4 vs. 5-11/16...the bigger the better. At least that what she said!
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Old March 11th, 2011, 05:05 PM
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Originally Posted by MDchanic
Whatever size is easiest to use is the best for you to make it. It will remain accurate.

- Eric
Printers distort. If the circle isn't round, the degree wheel won't be accurate. Just buy one.
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Old March 11th, 2011, 05:19 PM
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Originally Posted by joe_padavano
Printers distort. If the circle isn't round, the degree wheel won't be accurate. Just buy one.
C'mon, Joe. If you can put a compass pin in the middle, and go around the outer circle, and it's still round, then it's fine.

Printer distortion may bump it a half a degree or so, but not enough to matter, and you can see any distortion, because the divisions will be different sizes (you can check divisions in different portions of the circle with a pair of dividers if you want to be absolutely sure they're equal).

I'd call it a matter of diminishing marginal returns: You can get pretty darn close for free. If you want to get a little bit closer, that'll cost you 20 to 50 bucks more.

- Eric
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