Re: [CR]Wheel building puzzle

(Example: Humor:John Pergolizzi)

In-Reply-To: <c7e.4ae7926.32dc4b24@aol.com>
References:
Date: Sun, 14 Jan 2007 23:02:23 -0500
To: RDF1249@aol.com, classicrendezvous@bikelist.org
From: "Sheldon Brown" <CaptBike@sheldonbrown.com>
Subject: Re: [CR]Wheel building puzzle


Bob Freeman wrote:
>I have several NOS Lobdell wooden rims, all 32 hole, found in the attic of a
>100+ yr old Cincinatti bike store. Since finding vintage hubs in 32/32 sets
>is somewhat rare, I plan to build a pair of them up with a typical older
>british hubset in 32/40, skipping every 5th spoke on each side of
>the rear hub. How
>to figure the spoke lengths, that is the puzzle. I deduced there are four
>different lengths required, for each of the four positions in one section. I
>suppose one could draw this in 3D CAD and just have the program figure out the
>spoke lengths, but I wonder if one of you math whizzes can come up with an
>algorithm that works, or maybe just a simple common sense solution.
>Scratch your
>heads a bit on this. Replies off-list as well as on please, lest I miss a
>post.

This may help: http://sheldonbrown.com/mismatch

Sheldon "Hasn't Tried It" Brown -- +--------------------------------------------------------------------+ | "On two occasions, I have been asked [by members of Parliament], | | 'Pray, Mr. Babbage, if you put into the machine wrong figures, | | will the right answers come out?' I am not able to rightly | | apprehend the kind of confusion of ideas that could provoke | | such a question." -- Charles Babbage (1791-1871) | +--------------------------------------------------------------------+
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