So I’m building a rd4b for itz but I’m not quite sure if I’m meant to be using screws where the parts move and how do I attach the arm to the gear if it is on the other side of the c channel, I’m currently using a lock plate. Thank you
So where exactly are you placing the motors? It looks as if you want to place them where the top of the c channel is.
Here is an example from a previous post.
When building the pivots, using bearing blocks helps a lot. And extra nylon (they call them teflon but they are nylon) washers where things can rub metal on metal.
Reduced friction on the joints, and reduced space between arms are key to a stable dr4b linkage. Using the c-channel coupler can help too. Get creative with screw placement and nuts too to minimize that space between bars.
IT IS DR4B not RD4B
Yes, it is perfectly fine to use screws instead of axles. The first long-term issue I see is using Keps instead of Nylock. You just prototyping the lift?
EDIT//: Another thing; even though you are using screws, it’s best to still use bearing flats because the metal can seriously cause friction as well as can take a toll.
Yes nylocks allow you to have the screw slightly loose and give rotation while the keps likes to be real tight or it falls off.