I have a homemade (Harry Sarber Original) platform which tracks for about 45 minutes before a reset is needed. It will support up to a 10" dob. I just sold my 8" dob and no longer need this. I believe it was built for 41 degrees north, but should work + or - 1 degree with no problem. I used it a 40 degrees north.
I will be going to the BFSP this weekend and would like to sell or trade it there. Anybody interested in buying this for $75 or have a working barn door tracker for trade, let's talk.
Thanks for Looking