Bolt Circle Calculator

homebrewed

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H-M Supporter Gold Member
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I put this in a comment in another discussion but thought it might be more generally useful to put it in the miscellaneous-resources forum. It's a spreadsheet I wrote for calculating the locations of holes for bolt circles. You can specify the radius of the circle, the number of bolts and the angular displacement. It assumes the center of the circle is at 0,0 but it's easy enough to add an X and Y offset if need be. Just for grins I added a chart to show the locations of the holes, for a sort of sanity check to make sure they are where you think they should be.
 

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  • bolt circle calculator.xls
    10.5 KB · Views: 17
Sorry to report that the original version of my spreadsheet contained some errors -- apologies! :oops: The corrected version is attached.
 

Attachments

  • bolt circle calculator.xls
    10.5 KB · Views: 15
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