On Oct 2, 5:18*am, Gunner wrote:
On Wed, 1 Oct 2008 17:53:59 -0700 (PDT), wrote:
On Oct 1, 6:43 pm, Richard J Kinch wrote:
John Doe writes:
How would you do that?

Merely fastening them together is not enough. *You need a more complex
mechanism that transmits torque in the presence of imperfect alignment in
multiple degrees of freedom.

How about a piece of reinforced rubber hose, such as hydraulic hose,
as a compliant coupling. *Use two hydraulic hose clamps to attach to
pinion and shaft.

Wolfgang

Been there, done that, worked pretty well.

Try it, see what happens. Two hose clamps per side will help balance
the shaft if it vibrates.

I think a lot of us with 'high function metalworking tools' started
with hand tools and worked up slowly as our needs outgrew our
capabilities. A drill press and a bench grinder will take you a long
ways. You could make an aluminum shaft coupler with a hole for the
shaft and a larger one that presses onto the gear with one. I try not
to do something I can't undo, such as grinding the teeth off the gear.