On Tuesday, June 8, 2021 at 7:58:04 AM UTC-5, AMuzi wrote:
On 6/7/2021 10:06 PM, Frank Krygowski wrote:
On 6/7/2021 10:52 PM, Jeff Liebermann wrote:
On Mon, 7 Jun 2021 16:11:51 -0700 (PDT), Mark cleary
wrote:

So COVID has shot the groupsets of Shimano. I am not a
dura-ace person and I still shift with cables. Are they
going to be making or shipping Ultegra or 105 stuff.
Maybe it all is dried but and in the end looking for it
will never come. I would even go to a disk brake set up
if I could find 105 stuff. I have Ultegra now but frankly
105 is just as good.
Deacon mark

While you're waiting, you might consider making your own
parts (and
selling extra parts to others in your situation). For
example:
https://stlbase.com/browse/bicycle+shimano/
https://www.yeggi.com/q/shimano/
Unfortunately, making the stamped steel cassette gears
will probably
be too difficult. However, it might be possible to use a
water jet
cutter to make the chainrings.
https://www.google.com/search?tbm=isch&q=waterjet+cutter+bicycle+chainrin g


Mo
https://www.google.com/search?q=3d+printed+bicycle+parts&tbm=isch


A bit more seriously: I've sometimes thought it would be
nice to have access to a CNC mill, to refurbish freewheel
cogs. It would keep my ancient SunTour freewheels going.

Is that even possible? Any material removal just reduces
the root diameter, right?
--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

You beat me to it Andy. I was thinking the exact same thing when I read Frank's post. What good would a mill do you since it removes material. Grinds steel away. With cassette or freewheel cogs, the chain has ground off metal through use. So how would a mill grinding more material off help anything. Unless you were going to use the mill to grind, make, all new freewheel cogs and then disassemble and reassemble the freewheel. But I think you are getting close to the cure cancer and end hunger and peace in the world category at that point. I've heard freewheels are not something human beings disassemble and repair the internals. At least not sane ones.