[Donut]

Originally Posted by RRLedford

Yes, the C-shaped slider block is much stronger, but more appropriate for the heavier loads of FRC robots, and with three slide plates, also easier to be carrying the loads properly (unlike the bot in PICs above where shear is main loading on two slide plates).

-Dick Ledford

How much strength you need is certainly application dependent. If I'm building a basic elevator to lift 5 pounds 5 feet up I might not be too concerned about the shear loads on the plastic sliders (don't take that as an excuse not to check what the load ratings are on the sliders). If a robot plans on climbing using linear slides then proper sliding support and connections are a must for the mechanism to survive.