On Tue, 08 Jul 2014 16:09:12 -0500, Lloyd E. Sponenburgh wrote:

Tim Wescott fired this volley in news:4o-
:

So, do you think #1 would work? Is there a name for #2, and could I
count on it, or should I just stick with #1?

Tim,
This sounds like it might be a bit out of your ken. First, a five or
ten degree mis-alignment between shafts almost demands a CV joint, and
they're not 100% efficient except when running perfectly axially.

If you can't joggle things to be within a degree or two, you're just not
going to get what you want, unless you belt drive the sucker. Put a
sheave on the driving element, and a sheave on the torque sensor, and do
it that way.

Otherwise, a simple, cheap coupling for minor misalignments is called a
"Lovejoy Coupling". It transmits torque effectively with only minor
heat losses and also cushions any shocks in the train.

Lloyd

Better than five degrees could be done, but with more fiddlin' and
fussin'.

This doesn't have to be small for it's strength, so something outside the
usual machine design box may do.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com