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tech / rec.bicycles.tech / Spoke length calculation confusions

Spoke length calculation confusions

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From: solo...@drafting.not (Catrike Rider)
Newsgroups: rec.bicycles.tech
Subject: Spoke length calculation confusions
Date: Sat, 14 Oct 2023 08:44:18 -0400
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by: Catrike Rider - Sat, 14 Oct 2023 12:44 UTC

The more I delve into the issue of spoke length, the more I discover
inconsistencies in measurements and therefore inconsistencies in
calculations. I have hub measurements directly from Shimano on both
the new hub, fh-t610, and I just found data for the old discontinued
hub, fh-m590, in Shimano's archives. The website I've been using for
the rim data also has hub data and it does not match with Shimano, so
I wonder if that site's data for the rim is good. I'll measure it
myself when I get it disassembled.

I was tempted to order new spokes for the rebuild based on the
measurements from that website. Glad I didn't do that.

I'll do my own measurements on all the old wheel components when I get
it disassembled, and on the new hub when I get it. Then I'll plug the
measurements into a couple of spoke length calculator sites. I'll be
curious to see how the actual spoke length of the old wheel fits which
measurements, mine, the websites, or Shimano's.

Subject	Author
Spoke length calculation confusions	Catrike Rider