Rhino track failier?

[Kevin Sevcik]

Originally Posted by Andy Baker

Due to the speed of things happening, if folks want to post input here on what else to do to this Rev4, it may or may not get implemented.

Andy B.

Rev 4 improvements sound good, I think. Possibilities for the hopefully unnecessary Rev 5:

• If the cracks are starting at that thin section cleared for the bolt head, make it thicker by switching to #8 screws or flat-head screws. There would obviously be potential sourcing issues for either.
• If Richard's idea pans out, modify the mold to fit standard sleeve bearings all the way through. McMaster has 3/4" OD, 3/8" ID, 1" long sleeve bearings. That should thicken the wall plenty, but might transfer the failure to shock-loading of the oilite bearing.

Which reminds me to tell Richard to thoroughly shock-test his solution. I've seen some oilite bearings shatter on some of our subsystems before. There's a gray colored iron enhanced version that's more shock resistant that you might want to try. Your McMaster part number would be 2938T39, which is actually 0.20 cheaper per than your original bearing.