pic: FRC KOP Chassis Butterfly Upgrade V1

[GeeTwo]

Originally Posted by MrBasse

Each one, with some wiggle room, should lift about 45 lbs at 110ish psi. Side loads shouldn't be an issue do to the lack of hard mounting on the rod. Using the lifting eyes should just allow it to slip, right?

The amount of lever arm that is created by the module with only one mounting point in sheet metal would be a bigger concern to me. Then again, maybe the omnis won't allow much side load due to the fact that they are omnis...

[I am assuming that the butterfly pivot point is at the axis rubber tread wheel; if it's anywhere else, please disregard.)
I agree about the side loads (and won't those be minimal with the omni wheels in the first place?), but max FRC working pressure (caveat rule changes) is 60 psi, reducing the lift to about 26.5 lb. As this is applied at a lever arm nearly twice the distance from the pivot, this should be enough.

[Richard Wallace]

Nubs are cool. I generally favor using FTC parts in FRC when it is feasible.

However, in this application I would replace them with flange nuts like these, and use 3/8" bolts for both omni axles and lift points.