Originally Posted by BrianBrave
I would be content with just replacing the bearing in the idler pulley - but with a replacement rated at 25,000 RPM.
We might have to increase the idler pulley OD to 70mm (vs. 60mm). We are having issues finding the right bearing. If we go with a 70mm idler and use a 17k bearing, then we will be good.
We should also use 6250 as the RPM, not 6000. The 70mm idler will be good with a 17k bearing at 6250 rpm on a 185mm setup.