RE: ATM I just recieved a new Byers gear

["Antonio de Ugarte Postigo" <ugarte@mad.servicom.es>]

Hello again Dave,
        The question is that in the mount that I am building I will have a
gear in R.A. and a tangent arm on the declination. I have the motor that
Byers supplies, but I will have to install another motor on the other axis
anyway, so if I am going to do it I would like to do it right. I don't know
if I should look for a motor of the same kind as the one I have or if I
should change to steppers. I really don't know what would be the benefits
and disadvantages of using one or the other kind. Your system looks like a
first choice, but I am really worried about adapting the motors to the
gears, I wouldn't like to loose any precission by doing this, have you or
anybody else done this with a Byers gear?
        If I finally decide to build your drive system I would like to know
more or less how much would the whole system cost, and what motors should I
use for driving a 12" newtonian.
        Tanks a lot for all your help,

                            Antonio de Ugarte Postigo

-----Mensaje original-----
De: DROWESMI@aol.com <DROWESMI@aol.com>
Para: ugarte@mad.servicom.es <ugarte@mad.servicom.es>
Fecha: jueves 17 de diciembre de 1998 22:51
Asunto: Re: ATM I just recieved a new Byers gear


>Hi Antonio:
>
>Well, from your subsequent posts, it seems that the Byers gear comes with a
>synchronous motor.  Are you interested in changing this to a stepper?  It
may
>be easier and less expensive to stick with the motor supplied.  Steppers or
>sychros should work with the same precision if they are driven correctly
and
>are used with the right gear reduction ratio.
>
>Dave.