Re: typical servo speeds

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "optics22000" <elliot@...> wrote:

>
> Graham,
> You might try hacking apart a hard drive, they have very fast moving
> coil drives that move through an angle of about 45°.
>

I stupidly said no load but I was really assuming that the motors used
would be rather big so the effective load would be very small compared
to the intertia. Of course voice coils and galvos can get blistering
rotational speeds but I don't think they will cut it in terms of
torque, that said you can get some pretty big ones.

> Has anyone on the list opened up a really small hard drive? I've
> never had my hands on one that could be dissected.
>

Yep, they are just a miniature version of the big ones, really cute.

Graham