Re:305oz Steppers! More torque, Scotty!!!! (Shes' breaking up, I cannah hold'er)

AS a novice I don't understand, with torque/speed curves being so
important, why is it that curves are so very often difficult to find
or apparently none existent. For example the cncresource web site
doesn't have a curve for the stepper motor it offers as far as I can
find and the Keling site has very few. This seems to be the same for
so many sites selling stepper motors. No wonder us novices think the
holding torque is the only important criteria.

Also I can't find either of the two listed motors on the cncresource
and the one stepper listed doen't even quote the holding torque.

Am I going crazy or have I missed something.

Regards
Phil

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ballendo" <ballendo@...>
wrote:

> How FAR down, and how FAST the torque drops, and along what "shape"
> or "Curve" depends upon some things about the motor, AND some

things

> about the drive and power supply...................

> So let's look at the numbers for the Motors Keling sells as having
> the specs listed on Daves HCNC website. (Where the new 305 oz.in.
> motors are listed as 6v,2.0A) Here are links to both 305's and the
> 200's as formerly sold by hobbyCNC (and still available from
> http://www.cncresource.com ):
>
> http://www.kelinginc.net/KL23H286-20-08B.pdf (2.15Nm, 305 oz.in.)
>
> http://www.kelinginc.net/KL23H276-30-8B.pdf (1.4 Nm, 200 oz.in.)
>