Yes, they could - and that would be the way to go for low-volume manufacturing.
The
originals appear to be cast steel, and it would be economically unfeasible to
produce the
cast steel blanks for the volume we are talking about, so machining from a
suitable steel
alloy, with area hardening for the teeth and bore, would be the way to go. It
would be
helpful to get an idea of the properties of the material from an original set,
i.e.,
hardness, etc.
Gary McCormick
San Jose, CA
sidney raper wrote:
> OK, I know virtually nothing about what I am about to ask, but why couldn't
> a unit be milled out of billet steel and heat treated? I cannot imagine
> that it would cost the obscene money that the stock units are getting.
>
> Sid
>
> >From: "Gary K. McCormick" <svgkm@halley.ca.essd.northgrum.com>
> >Reply-To: "Gary K. McCormick" <svgkm@halley.ca.essd.northgrum.com>
> >To: datsunmike <datsunmike@nyc.rr.com>
> >CC: Brian Rourke <bbtmc@ozemail.com.au>, datsun-roadsters@autox.team.net
> >Subject: Re: Timing gears...again.
> >Date: Thu, 16 May 2002 07:00:04 -0700
> >
> >I believe he is talking about newly fabricated sprockets, not
> >retro-treating existing
> >units.
> >
> >Gary McCormick
> >San Jose, CA
> >
> >datsunmike wrote:
> >
> > > I do believe the gears are already hardened. You could try the freeze
> >method
> > > which is supposed to make parts last longer.
> > >
> > > Mike
> > >
> > > ----- Original Message -----
> > > From: "Brian Rourke" <bbtmc@ozemail.com.au>
> > > To: <datsun-roadsters@autox.team.net>
> > > Sent: Wednesday, May 15, 2002 10:19 PM
> > > Subject: Timing gears...again.
> > >
> > > > I know that a local 2000 sports specialist here in OZ is talking about
> > > > experimenting with hardened alloy sprockets for the U20 engine. Should
> >be
> > > > interesting to see the results....
> > > >
> > > > Cheers all, Brian Rourke 1970 2000 solex.
> > > >
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