V5 Motors and Bearing Flats

How does one tighten the V5 motors with bearing flats to a C-Channel. I’m being completley serious, we have been using the old motor screws and it won’t tighten properly. Pls help.

The old motor screws do not work for V5 motors. They use the same diameter and pitch as regular screws.

The correct screws are 8/32, not the #6 of the old motor screws. 8/32 is the size of a “normal” VEX screw.


Basic building question… is it counterproductive to have a bearing flat on each side of the metal piece the shaft is going thru?

Yes, a second bearing flat is not needed. Also, the flats have some protrusions that fit into the square vex holes, so they could not be placed back-to-back anyway.

In other news, if you look at the new V5 (the CAD files were just posted), there are some new bearing options that will be coming out, including a one-screw bearing with a locating nib and “captive-nut” locator so it can be tightened without needing a wrench on the nut.

Wow. My co-coach will be delighted by this! Where can I find out more information on this?

I’ll post pictures in the Vex World Coaches Association that I just made from the new CAD models.

(This is a little off topic, sorry!)

I already use 1 screw in all my bearing flats. The screws usually distort the holes a bit and add friction, so I save the outer holes for joints and use the central hole for screws.

This may sound really slapdash, but I’ve never had an issue with it. There was close to no friction on my worlds lift and every single bearing flat on that robot was purchased SS or before and used heavily.

A bearing flat that has this function built in AND that doesn’t require a wrench sounds awesome! But seeing as it probably won’t be out before 2025, I think we’re out of luck :frowning:

Here is a CAD image of the 3 new “connector” parts that are included in the V5 Clawbot CAD, downloaded from vexrobotics.com: (top and bottom views shown of each)

Each of these has one or more square plastic post(s) that fits into EDR metal structure that is tall enough to engage 2 mating pieces. Also, each has a hexagonal recess for holding a Nylock nut (doesn’t look like a Keps nut will fit). And the middle one has a bearing hole.

These look great for building a robot quickly. I doubt the plastic will be robust enough to hold up to significant repeated rotational stress on a joint that is only connected by 1 screw and 1 of these parts.

I wonder if these will be for sale outside of a kit soon?