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November 30th, 2018, 10:21 AM  #1 
Newbie Joined: Nov 2018 From: USA Posts: 2 Thanks: 0  Need formula for solving ellipse radius with equal spacing points
I'm trying to build an oval bicycle wheel and need a formula to calculate the radii so that I can use the results to calculate the length for each spoke. See diagram for details. Hope someone can help.

November 30th, 2018, 11:57 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038  Number Cruncher: N evenly spaced points on an Ellipse https://stackoverflow.com/questions/...erimeterofan Last edited by Denis; November 30th, 2018 at 12:00 PM. 
November 30th, 2018, 02:37 PM  #3 
Newbie Joined: Nov 2018 From: USA Posts: 2 Thanks: 0 
Hi Denis, thanks for the links. I'll go take a look.

November 30th, 2018, 06:23 PM  #4 
Global Moderator Joined: Dec 2006 Posts: 20,919 Thanks: 2202 
Do you want the angle between adjacent spokes to be constant?

November 30th, 2018, 09:02 PM  #5 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  The OP posted this question at another site, and we discovered he wants the perimeter of the ellipse to be divided into equal segments. They were then advised of numerical methods for achieving this goal.


Tags 
ellipse, equal, formula, points, radius, solving, spacing 
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