Re: [APML]: Byers drive and the MototrakIV

["Joseph O'Neil" <joneil@multiboard.com>]

C. J. Klingman wrote:

> First of all, you surely must know the type of motors you have on the RA
> and Dec axis.  If you have AC synchronous on both axis as I do, they
> will be Hurst and clearly marked for 120vac use.  You will have good
> photo guide capability but no slew capability;  have to bump the scope
> from place to place by hand.  (AC synchronous motors cannot be driven
> more than ~ +/- 30% of 60 hertz and that is pushing it.)  Of course, the
> big accurate setting circles will make this much easier.

        Exactly on the money.  My Hurst is an AC motor, and ht eonly thing I do not 
like aobut my drive at times is either th elack of slewing or a proper RA lock.  Mine 
is the friction clutch.  However, the drive tracks beautifully, although I have never 
measured the P.E.

        Just out of curosity, should it not say directly ont henewer motors exactly 
what they are.  Mine reads 5 RPM, 115 V, 60 HZ, 3W - and was made in 09/86.  I suppose 
I should not be upset it crapped out after all this time.  Mike should be able to read 
similar information off the face of his motor.

        Just out of curoisity, you mentioned that you were able to adapt your 
autoguider to your older drive corrector.  I have an older drive corrector myself, and 
was wondering how you did this (for the "electronically challenged" like myself).
thanks
joe

        
-- 
joneil@obs.empath.on.ca
http://www.multiboard.com/~joneil
Astro-photo, infra-red, large format, B&W
and a single picture of my psychotic cat.