Me when the physics teacher said friction can be ignored. The omni rollers will die
9 Likes
Hellooooo! Glad to see you here!
yeah, its too large and wide on either side to go up the platform. also, the 4 omni drive restricts ground traction, which makes it even harder to get up.
actually, omni wheels provide some of the best possible traction. Just because they can slide side to side doesn’t mean they can’t have excellent forward grip on the tiles, which they do.
10 Likes
mhm
maybe, but ill stick to my half traction half omni drive lol
don’t take my word for it, here, have some data:
if you look at the experiments done in this post, you’ll see that 4" omni wheels have the best traction on both polycarbonate and foam tiles, while 4" traction wheels actually have the worst traction on both materials over any other wheel type.
Results like these are why it’s important to make your decisions based on data and experience over simply intuition. While traction wheels sound like they’d have a lot of traction, in reality they’re the worst. And the slippery sideways nature of omni wheels might lead you to think they have bad forward traction, but actually they’re the best.
11 Likes
ah yes but I’m using 3.25s
haha yes a crabbot that dances that would be a very good idea mhm
again, take a look at the chart. 3.25" still rank higher than traction by a large amount. And it’s pretty clear why 3.25" are less grippy than 4" and 2.75", because the rubber of their rollers is less squishy and grippy.
However, it’s not super important to optimize traction because all you need is enough traction, not the best. As long as your wheels aren’t slipping during the match, that’s enough traction. The only moments where optimizing traction past that good enough level has any benefits is during pushing matches, which while useful, probably isn’t worth the sacrifice you make by giving up all the other advantages of 3.25" omnis in favor of the traction of 4".
5 Likes
One question: what sim software is this?
It’s not exactly “sim” software, but I animated this in Blender. The rings and stuff move due to some simply rigid body physics I set up, but the rest is done by hand.
3 Likes
Oh god. I was thinking this was a diamond-in-the-rough CAD software. Blender is out of my expertise.
You say this, but it likely isn’t. There’s a bit of a learning curve, yes, but it’s easy to get started, and the software does like, all of the work for you.
It’s just a matter of moving the different pieces where you want them at different times and clicking i to add a keyframe.
I design the models and stuff I need in Inventor, then I import them into Blender and rig them/add textures.
7 Likes
Cool idea but arent you only allowed to use 6 motors with pnuematics?
This season you can use up to 8 motors with or without pneumatics – more discussion here:
6 Likes
I spy with my little eye someone who hasn’t read the game manual.
27 Likes
Looks like you aren’t going for the win point. Is this an intentional compromise? < I know you know this. Just It looks like you think getting a couple more goals is more important.
I feel like this strategy is even less viable now, because you can’t score any points with those neutral goals in the autonomous period.
Could you clarify this? Why wouldn’t you score points for the neutral goals here? The bases are touching the foam tiles in the Alliance Home Zone…
1 Like
Mobile goals can only be scored at the end of a match. The only way to score pints in auton is rings on alliance goals.
6 Likes