Mathjax

Tuesday, September 24, 2019

The "right" way to determine spoke tension set point


Hey all you bicycle math fans.  Here is a post about set points for the bicycle wheel.  It is buried behind a link but never fear, the link will take you to a very readable pdf version of the document.  It is a far better way to show equations that going from Word to GoogleDocs.  This one really looks like the Word file I created.

I thought blogger was going to be able to embed the html code for the pdf I created. That would have looked great and been easier.  Alas, the instructions I found on the web for embedding did not match the results I got when I tried to follow them.  If anyone knows how to embed a pdf in blogger, let me know.  I always worry what happen when I follow a link.  I don't know what will be there.

The post shows how to calculate a set of optimal tension set points for all the spokes and explains how it works. The programming is amazingly easy to do and draws on previously existing matrices set up for truing.  It takes some math to get there but the final calculation is about two short lines of code.

I also spend some time explaining the theoretical limits of truing just how close to perfectly true is theoretically possible.  I think this may be the best part.  For wheels with flanged hubs and spokes drawn through from the inside and outside, the ideal tension varies about 30 N.  It is an amount you would typically be able to detect on a really true wheel.

Have fun.

If you wish to comment, it may be easier on my twitter feed @lowgill. https://twitter.com/lowgill

I have a post there directing readers to this blog


Link to document on my public Google Drive