pic: 1736 Robot Casserole's U~Slide Drive

[Sparky3D]

Originally Posted by orangemoore

It looks like something similar to Wildstang's Cable magic. My guess, whatever it is, custom designed or found on the internet, it looks to be a 3D printed part.

http://wildstang.org/blog/?p=472

Yep, Wildstang's Cable Magic. Thanks 111

[SteveGarward]

Great to see it in use!

Please check our blog tomorrow. I will be posting up the CAD files for the small/short version for the analog and relay ports.

[orangemoore]

Originally Posted by Sparky3D

Yep, Wildstang's Cable Magic. Thanks 111

It looked very similar I just couldn't tell if it was the same or not.

[Deets21]

What were some of the pros and cons of the chassis, not referring to recycle rush, but as a sort of H drive chassis how did it do? I'm exploring different designs for an H drive chassis and noticed yours and though it would be a quick and easy solution to an H drive

[RoundTabler]

Do you have CAD or pictures of how you accomplished your spring suspension? I was designing an H-drive this summer, and I couldn't find any pictures of such a suspension.

[Chak]

Looks like you're asymmetrically powering only the upper left (in the picture) and the lower right wheel. How's that working out? I've never used omniwheels before - do you have to power all the wheels (like a WCD) or not?

[Chris is me]

Originally Posted by Chak

Looks like you're asymmetrically powering only the upper left (in the picture) and the lower right wheel. How's that working out? I've never used omniwheels before - do you have to power all the wheels (like a WCD) or not?

There are two other belt runs obscured by the flanges on the chassis, all four wheels are powered.

You don't *have* to power every wheel on a drivetrain, but you're wasting tractive force by not doing so. It's a very good idea to do so, particularly when the field isn't flat.

[EricH]

Originally Posted by Chak

Looks like you're asymmetrically powering only the upper left (in the picture) and the lower right wheel. How's that working out? I've never used omniwheels before - do you have to power all the wheels (like a WCD) or not?

Nope, they're powering all of them. The frame hides the near-side belt on both sides.

Omnis being all/not all powered depends on the exact type of drive. If they're in tank configuration, they don't all need power. But if you're doing something funny--say, omni-directional movement--you'll need 'em all powered (in general). And, in general, you want all your wheels that are on the ground powered (unless you specifically don't).

[Chak]

I see it now. Thanks!

Originally Posted by RoundTabler

Do you have CAD or pictures of how you accomplished your spring suspension? I was designing an H-drive this summer, and I couldn't find any pictures of such a suspension.

+1. I'm thinking about doing something with omniwheels right now in the preseason, and it'll be great to see some examples of spring suspension.

[jeremylee]

Originally Posted by Deets21

What were some of the pros and cons of the chassis, not referring to recycle rush, but as a sort of H drive chassis how did it do? I'm exploring different designs for an H drive chassis and noticed yours and though it would be a quick and easy solution to an H drive

Pros:
1. Easy way to add h-drive to kit.
2. U approach straffed well even with a heavy load of totes on the straffe wheel side on robot.
3. Clearance to cross bump easily
4. Ajustable spring for allowed us to dial in quickly during a regional.

Cons:
1. Reduced pushing capability due to spring approach to load center wheel in games of defense.
2. Limited travel of center wheel due to using kit plates for 5th wheel
3. Heavy
4. Needed gyro to help compensate for tendacy to turn during straffing.