Hi Jim,

Yes, Because the Gingery uses the flat CRS bedway, there is no
simple solution without restricting carriage travel. Commercial
Lathes tend to have a second set of ways that hold the headstock and
the tailstock. The carriage can then have extensions on either side
that in effect make it wider which reduces the twisting action to some
extent.

I haven't figured out a method for the Gingery yet that would allow a
wider carriage. At least not a simple one.

John


jim rozen wrote:

In article , John Dammeyer says...

Finally another major design flaw on the Gingery Lathe is in the
half-nut assembly.
snip
The AA product lathes all show this flaw as well, and the flawed
behavior you attribute to it. I think you are spot on with your
diagnosis.

The lead screw on those small machines is quite far out from the
bed, and the half nuts are at the extreme side of the apron. Which
gives rise to the twising and binding you talk about. Because
the AA machines have such tiny carriages this is a real problem
with them.

Jim