Re: [CR] wheel-building machinery

(Example: Framebuilders:Tubing:Columbus)

Date: Fri, 10 Apr 2009 18:40:12 -0700
From: <mrrabbit@mrrabbit.net>
To: <hsachs@alumni.rice.edu>, Harvey Sachs <hmsachs@verizon.net>
References: <49DFD8CA.2070700@verizon.net>
In-Reply-To: <49DFD8CA.2070700@verizon.net>
Cc: jerrymoos@sbcglobal.net, Classic Rendezvous <classicrendezvous@bikelist.org>
Subject: Re: [CR] wheel-building machinery


Dirty little secret of the wholesale distribution basic and replacement wheel business...many distributors for the various regions of the US including my own

do this...

Lots of distributors will call a 20 minute wheel built by an employee at home a "hand-built" wheel.

Typically the employee does 'em on spare time for roughly 8 bucks apiece - so they are encouraged to do at least 3 an hour. Some can do 4.

And of course they are passed off as a "better" substitute for the same machine- built wheel that was done in 10 minutes - 5 by hand and 5 by machine.

They'll often use two spoke wrenches at once - no lube on the seats - and literally start off with 2-3 complete turns right off the back before spending the final 5-10 minutes fine truing - and rarely get anywhere near +/- .002 inches or decent tension.

...slick advertising really...

I.e., like the machine-built wheels - they still need some finishing work.

My wheel business is basically:

The same machine built basic and replacement wheel but hand assembled, lubed, trued and tensioned, stress relieved, adjusted and spun, for a total build time

of at least an hour - often 1.5 hours for rear wheels.

Some shops and customers do want to know that the wheel coming off the shop hook is "truly" a "hand-built" wheel "quality"-wise even though it may be a cheap basic and replacement wheel.

For a shop that is really busy during the Summer - my wheels help 'em get low- end work out fast but right - so the higher-end and higher-revenue generating stuff such as overhauls and custom bikes don't get held up. I don't sell much during the winter - nor do I expect to.

Of course like most builders, I do high end wheels as well.

http://www.mrrabbit.net/wheelsbyfleming.php

=8-)

Robert Shackelford San Jose, CA USA

p.s., If the link above is not appropriate Dale, let me know.

Quoting Harvey Sachs <hmsachs@verizon.net>:
> Jim Papadopoulos, my wife, and I visited the Schwinn works in Chicago in
> the Fall of 1974. At that time, assembly of run-of-the-mill steel-rim
> wheels was a two part process. Humans spoked the wheels. They were then
> put on a machine that mechanically tensioned the spokes. It was
> certainly "good enough". This had been going on for a long time, so I'm
> pretty sure it was not even computer-controlled.
>
> I believe that Jim eventually patented a concept that would do the final
> tensioning in a single pass around the wheel.
>
> Harvey Sachs
> mcLean va usa
> +++++++++++++++++++++++++++++
> Jerry Moos wrote:
> Kind of amazing that someone could build 6 wheels an hour. I guess one
> could get pretty fast at spoking them, but the tensioning is what takes
> time. I've read a few places that In The Day inexpensive wheels were
> tensioned "by machine", but I've never seen a description or photos of
> the machines used. Is JB using some sort of tensioning machine? If
> these guys are spoking and tensioning 6 wheels an hour by hand and
> sustaining that all day, its amazing they can even get them true enough
> to not drag on the brake pads. I'll bet some of these guys get good
> enough that they could probably build some really excellent wheels if
> they were ever given the time and decent pay for doing so.
>
> _______________________________________________
>
>
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