by orcinus » Tue Jun 25, 2013 1:54 pm
I've recently tightened my X and Y axes V-wheels quite a bit against the rails (i'm, sure someone will jump in and say "don't do that", but i have a good reason - the increased friction dampens the high frequency oscillations in the drivetrain and reduces the ripple by A LOT) and noticed something peculiar...
When tightened sufficiently, the axes exhibit rather noticeable "bumps" in the V-wheel motion. As if there were detents at points into which the wheel "falls in". They're perfectly periodic with the period of one wheel rotation, so i'm 99.9% sure it's an artifact in the V-wheel construction, but i can't identify it visually. There is no visible damage, dents or cracks. Also, it doesn't appear to be limited to a single V-wheel either.
Any ideas what might be the cause, Bart (or anyone)?
The only thing i can think of is that the V-wheels are slightly eccentric.