Maximizing the in-line CoF of Omni-wheels

[asid61]

Originally Posted by Dunngeon

Butterfly is Omni, Octo-canum is with Mechanum.

I see the gains to be made here, I just don't think post-manufacturing modification is a very efficient route to go in this application. I'm also not convinced it would be very helpful just because of how the Omni's react to lateral loads.

You're assuming that you are configuring the omnis in a traditional manner. I think ther emight be a way to get them all nice and on the ground (maybe with thingy-which-name-escapes-me with springs)
Post-manufacture, I agree, is somewhat dead because the rollers can only be modified so much. Swapping out the rollers with polyethurane with a delrin hub might work if you were to modify an existing wheel.
I've never assembled an omni before; is it possible to take the rollers off?

[buchanan]

Originally Posted by Bryce Paputa

Yeah, I think that I would get bigger rollers (anyone know how?)

Has anyone tried these?

Originally Posted by asid61

configuring the omnis in a traditional manner

Is there a common understanding as to what this means?

[Dunngeon]

Originally Posted by buchanan

Has anyone tried these?




Is there a common understanding as to what this means?

Which wheels are you referencing? The link is broken for me. The Omni's that site has seem interesting, but very expensive compared to Vex Omni's

By Traditional, he likely means Omni's in the 4 corners of the robot and each wheel direct driven by a CIM.

Originally Posted by asid61

You're assuming that you are configuring the omnis in a traditional manner. I think ther emight be a way to get them all nice and on the ground (maybe with thingy-which-name-escapes-me with springs)
Post-manufacture, I agree, is somewhat dead because the rollers can only be modified so much. Swapping out the rollers with polyethurane with a delrin hub might work if you were to modify an existing wheel.
I've never assembled an omni before; is it possible to take the rollers off?

Look at Kiwi drive, it doesn't help with pushing either.

[asid61]

Originally Posted by buchanan

Has anyone tried these?




Is there a common understanding as to what this means?

Well,
either 4 omnis in the corners or one omni in the center. With these configurations, the extra COF might not help due to one or more wheels not touching the ground fully. You would need suspension (that's the word I was looking for!) or a different setup that hasn't been used to maximize ground contact with all wheels and escape spinning issues.