Sunshine had a proprietary process of spin welding two halves to form a hub. Each flange and center section were spun in opposite directions and the heat achieved the weld. Then the hubs were machined. This allowed near net shape forging and could be the process Hugh is referring to that allowed production flexibility..
I had a display board showing the steps and a similar board showing Nitto's process in the shop I ran.
Great hubs. Even the cheap ones had integrity.
JoeBender-Zanoni
Great Notch, NJ
<classicrendezvous@bikelist.org> Cc: "Henox" <henox@icycle.net> Sent: Tuesday, November 18, 2003 1:31 PM Subject: Re: [CR]unfamiliar parts
>
>
> Sanshin developed a unique technology ( for the time) that allowed them to
> produce short runs of high flange, low flange, or combinations of high and
> low flanges with a variety of spoke hole drillings. I don't know how they
> did this, and have always wondered if it may have been by a very early
> implementation of CNC programmed lathes.
>
> Unfortunately I never got to visit the factory but I did meet the company
> officials on several occasions. I'm sure I've got some of their catalogs
> kicking around here somewhere and I wish they were still in business.
>
> Hugh Enox
> La Honda