> I built one of these (English Yoke type) and found that it had a lot of
> sag. No, Bob, I didn't quantify the sag. but could see it in the
> eyepiece. I did not have benefit of the S&T article and probably used
> too small a tubing for the telescope. Taking a cue from the Porter's
> Folly mount I solved the problem by filling the pipe with cement. It
> was a lot stiffer, but a lot heavier, which may defeat the purpose of
> most who would use this material. -Rik
>
Rick, you solved the problem in the same manner the S&T atricle did. They
inserted plywood stiffiners and filled the tubes with concrete. I wonder
how polyurethene foam would work and keep the forks lite?
Bob Madden madden@netcom.com