6X 775 - 6X 1.625" Drive
 

Because I don't design outrageous things enough...

each drive side is 8.03lbs with everything shown (only thing that should be missing is the M4s to mount the 775s. Didn't design out the full frame because meh.

Ratios is a 12:100 off the 775's with a 24:24 spacing ratio down to the wheel.
I chained the wheels together before that gear spacing so that the chain did not have to be routed up after every wheel for ground clearance;
so there is a stage of gearing down to each individual wheel.

Feel free to tell me how ridiculous this is.

Sorry for the large pics

Re: 6X 775 - 6X 1.625" Drive
 

Needs smaller wheels.

Re: 6X 775 - 6X 1.625" Drive
 

Would you consider making custom wheels if they're that small?

:P :P :P :P :P

Re: 6X 775 - 6X 1.625" Drive
 

Stop being so negative, let him do what he wants

Re: 6X 775 - 6X 1.625" Drive
 

I think you need moar power:p .

Re: 6X 775 - 6X 1.625" Drive
 

What is this I don't even...



Seriously though, with so little ground clearance, couldn't this get stuck on something as small as an uneven spot in the carpet?

Also, you missed a golden opportunity to make a 38 wheel (19 wheels x 2 sides) gear-drive. :rolleyes:

Re: 6X 775 - 6X 1.625" Drive
 

1/2" ground clearance, there's been lower.

Re: 6X 775 - 6X 1.625" Drive
 

Why is there a pox of these going around? This is the 3rd such chassis thingy I've seen in the last week.

In any case, looks good. The weight in particular is fantastic. :P The only thing I would question is the use of 775pro drives due to availability and effectiveness, but apart from that it actually looks quite solid.
Why socket heads over buttons or flatheads?
What does the free speed look like?

EDIT: I always look forward to your models. They tend to be very innovative and pretty!

Re: 6X 775 - 6X 1.625" Drive
 

Our 2013 robot had less than 0.25" clearance above the floor and the pan extended forward and behind our wheel base >_>

Yes carpet was an issue. But by comparison this has loads of ground clearance, and even more importantly it has leads in the front and back.

Re: 6X 775 - 6X 1.625" Drive
 

Why use plate and standoff construction only to cantilever the wheels? Is the easier wheel change worth more difficult bumper mounting and greater stress in the structure?

I don't mean to poke at something that is meant to be slightly whimsical. But if there is a legitimate reasoning, I would just like to know what it is.

Re: 6X 775 - 6X 1.625" Drive
 

Yes, since the wheels have to be replaced between every match :p .

Nick most likely used plates instead of a piece of extrusion because it allowed him to maintain a decent amount of ground clearance. In order to do the same with a tube you'd end up tacking little plates on anyway, so you might as well simplify it.

Re: 6X 775 - 6X 1.625" Drive
 

Such pockets! :)

Re: 6X 775 - 6X 1.625" Drive
 

Can we get a render of just the gearbox itself?

I'm also concerned with the gearbox mounting method. Would there be any issues with the fasteners bottoming out on each other before you can get a solid joint?

Re: 6X 775 - 6X 1.625" Drive
 

And talk about all the weight savings on those wheels!

Re: 6X 775 - 6X 1.625" Drive
 

A 775pro drive gearbox could actually be viable. I know team 16 used 775pros for their drivetrain this year and it seemed to hold up really well with the unusual strain from the defenses. When talking to them at Worlds they said there weren't too many problems and it came down to the gearing. They would be better at describing it.