Quote:
Originally Posted by bojan
So, what happens now?
back to the drawing board....
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Bojan,
I'd suggest trying first to get a better graph of the PE.
It's not hard to do. Many programs chart the PE , I use K3CCDTools
Drift Explorer then put the chart into an Excel spreadsheet.
Just use a webcam / imager, find a medium power, turn on the
charting process and let it run for a complete cycle of the 2nd
from last gear in the gearbox , if possible.
A better chart will let you identify the main component of your problem.
There is not much point trying to reduce the PE of a gear 3 or 4
orders back in the reduction anyway, depending on your ratios of
course.
As for steps being visible, is it Microstepped of half steps?
If micro, then as you well know, Mel B suggests a reduction of
at least 4000:1 to have a compromise between good high speed slews
and no visible steps at the eyepiece.
Steve