So… I was planning and researching the pros and cons of various drivetrains. When I came across the H-drive, I thought I could improve it.
Here’s what I came up with:
That would drastically reduce the sturdiness of a bot.
The main c - channels that go the length of a drive would be cut in half.
If i were you I would use 2 inch v2 mechanum wheels for a holonomic drive.
Are those the small Mecanum wheels?
I heard they don’t work. I heard they won’t strafe cause their rollers are too small.
I also researched the advantages and disadvantages and am having second thoughts. Our team has a very limited time. This was just a random sketch and I wasn’t actually thinking we would build it.
These are the advantages and disadvantages of a Mecanum:
Advantages:
• Can go any direction without steering (strafe)
• fast because orientation doesn’t matter (you don’t have to steer)
• resistant to sideways push
Disadvantages:
• hard to do 6 motor drive train
• complex and tricky to code
• slow to turn
• heavy and bulky
• tendency to slip (drift)
• costs a lot of motors (four)
I’m having second thoughts about holonomic drives in general, because all of them seem to be prone to getting pushed around. In a game literally called “Push Back”, I want a bot that can actually Push Back, instead of being Pushed Back. 
This is a more detailed tinkercad model of what I was thinking. I do not believe it has the problems you were stating.
Slightly off topic, but are those plastic joints? If so, there are 16 of them which exceeds the 12 piece plastic limit.
The only viable holonomic drive for this year is mechanum due to parking.
That’s different than the original sketch.
The best design would just be to have 2 motors on a single wheel, and the wheel might get stuck when parking.
Yes… but it takes up a lot of space and it cannot climb the barrier for parking.
The angled wheels would get stuck.
I didn’t know there were new 2" mecanum wheels…
I’m sure it’s “possible” to climb a barrier with an asterisk drive but it might be harder.
You can make an asterisk drive with mechanum wheels 
You could easily attach the 2 top pieces to only have 8 parts, leaving 4 for the rest of the build
I think with improvement it could work. my question is, where do you think the brain, battery, and controller connecter thing would fit? because to my understanding people put those on the middle of the H drive next to the wheel. but there is no sturdy place to put them on this model?
But… that defeats the purpose of a Mecanum…
In fact… that just bings out the worse in both…
It just combines the clunkiness of a Mecanum with the space inefficiency of a X-drive…
The red rectangle in the middle of the cad is where they would be.
Here’s a more detailed and realistic model:
Yes, but what I’m too lazy to park and I just don’t?
Are you talking about this:
Are you talking about this:
You’re not talking about this:
Yes, but the original sketch is very basic and was meant only to show the general idea.
