Re: Is it possible to change the BP motor to eliminate shifting?

Seems like it might be possible even to use a sprocket and chain in
place of the cable and use an angular actuator but there has to be
some way to indicate that the shifting has happened properly or the
thing will take off in neurtal and cause a mess. Right now I don't
think I have any digital outputs free for all these requirements.

Keith

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
> Keith Clark wrote:
>
> >Thanks Jon, I am installing a VFD and would like to figure out
how to
> >use pneumatic cylinders to shift. Do you know of this being done
on
> >the BP since the shift requires a 180 degree throw of the lever?
I
> >think someone suggested using a stepper motor to turn the shift...
> >
> >
> I think an air cylinder with a restriction in the air lines is
perfect
> for this
> application. This is where you want a steady force applied until
the gears
> engage. You could always use aircraft cable over a grooved drum to
> effect a 180 degree movement of the lever. I think a stepper would
> have to have a spring or similar arrangement to keep from stalling
the
> stepper until the gears engage.
>
> Jon