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In message <001501c3aa69$2225daa0$248efa43@oemcomputer>
          "Steve Hammatt" <GSteve@hammatt.com> wrote:
<snip>
> 
> The original pulleys have a two piece design that 
> worked well and I'd like to continue with the same 
> setup, if possible.  The new multi-step pulleys would 
> need to be two piece design with a center section that 
> has a narrow slot cut into it from one side through 
> the center (1-1/4" bore) and slightly into the other 
> side.  This 'spring' cut allows the center section to 
> 'clamp down' securely on the shaft.  The compression 
> of the center section is caused by the slight taper when 
> the center section is inserted into the outer section (which 
> is the part that has the V-grooves).  When two Allen screws 
> are tightened (the Allen screws are fitted half-way in the 
> center section and half-way into the outer section) there 
> is a very positive clamping affect around the center bore 
> hole.
> 
Steve,
In the UK they are known as taper lock bushings.
HTH
-- 
Dick Atkinson             RISC OS on an Iyonix pc
In sunny Chester-le-Street, Co Durham, NE England
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