Winnovation Midwest Coast Drive

[Carrington]

Team 1625 Midwest Coast Drive
-6 Wheel West Coast Drive
-Completely belt driven using Gates GT2 Belts
-5mm GT2's in the frame
-3mm GT2's on the gearbox
-Gearbox contains AndyMark Gen 2 shifter gears and dog
-Custom CNC'd hex axle's
-Shortened body pancake cylinders for the shifters within the gearbox
-Single Bolt roller bearing tensioner on gearbox
-Cam based roller bearing in frame tensioners
-Wheels made of UHMW for cost purposes
-Built in encoder mounts
-Testing will be done soon

(Sorry it is a couple days late, and sorry for the resolution of the photo's)

[Katie_UPS]

Carrington,

You Winnovation boys never cease to continue creating amazing things. It looks great!

-Katie

[s_forbes]

Neat! With belts and only two total reductions it probably sounds pretty slick when driving around. Are the motors being used as a means of structural support between the two transmission plates? It looks like 'fun' to take apart and put back together.

Looks sleek.

[BrendanB]

Wow, that is a very pretty robot! You guys never cease to amaze in the off season! How much does that beauty weigh?

[Carrington]

Originally Posted by s_forbes

Neat! With belts and only two total reductions it probably sounds pretty slick when driving around. Are the motors being used as a means of structural support between the two transmission plates? It looks like 'fun' to take apart and put back together.

Looks sleek.

Yes. The motors are being used as structural support. It is actually relatively easy to take the gearbox apart.

Originally Posted by BrendanB

Wow, that is a very pretty robot! You guys never cease to amaze in the off season! How much does that beauty weigh?

As show in the picture this robot weighs 51 pounds.

[Akash Rastogi]

Awesome as usual. Its stuff like this that let's me honestly say you are my favorite team in FRC.

Am I the only one who just really likes that mount for the Vics? Haha.

[Aren_Hill]

It's also has a set of lexan fenders coming to make a legal bumper mount system that supports the entire length of the bumper.

This project has been governed by Carrington (theloneasian) and Arthur Siebel, gotta keep training the replacements that dillon kid graduated.



Offseasons are for weirdo's

[Chris is me]

1625: the only team not satisfied with a six wheel swerve drive

How much weight are you saving compared to that by the way?

I love running the belts through the tube. I was trying something like that but I didn't think to use belts. Makes so much more sense since you can order them an exact distance and they don't stretch or fail often.

[Brandon Holley]

Looks ok, I guess...




-Brando

[RookieWookiez]

Just wondering, was ur belly pan desingned with the current lay out in mind? and whats with all the orage hoseing... i no u need it for the shifters but it seems like u have alot more than is needed.

[Carrington]

Originally Posted by RookieWookiez

Just wondering, was ur belly pan desingned with the current lay out in mind? and whats with all the orage hoseing... i no u need it for the shifters but it seems like u have alot more than is needed.

Yes, the bellypan was designed with the current layout in mind. There is a mounting layout for the electronics and pneumatics. There is probably an excessive amount of hose, but we always cut the hoses long to begin with. We will probably cut off the excess eventually.

[RookieWookiez]

Ok we've been working on some things too this summer and should be posting them soon but we want to do a little testing first befor we put it out there.

[sanddrag]

Looks pretty good so far. The transmission layout is rather clean. I'd be worried about the belts in the tubes though. It seems like if one were to wear or break at an inopportune time (say during Einstein finals), you'd have a heck of a time replacing it. And don't think it wouldn't happen. All it would take is one piece of sharp debris to find its way in there.

Also, I'd be very concerned about the strength of a three spoke wheel, at least with the spoke profile and material you've chosen.

[Carrington]

Originally Posted by sanddrag

Looks pretty good so far. The transmission layout is rather clean. I'd be worried about the belts in the tubes though. It seems like if one were to wear or break at an inopportune time (say during Einstein finals), you'd have a heck of a time replacing it. And don't think it wouldn't happen. All it would take is one piece of sharp debris to find its way in there.

Also, I'd be very concerned about the strength of a three spoke wheel, at least with the spoke profile and material you've chosen.

We plan on doing time trials to see how long it takes to replace a belt. We also plan on putting lexan shields over the access holes in the frame to prevent sharp debris from coming in contact with the belts. Also the wheel in the CAD is just a placeholder. The real wheels are made of UHMW that has been shelled out an only has one hole for access to tensioners.

[JesseK]

1/32" polycarb could be riveted over the holes to prevent debris from cutting the belts. The obvious tradeoff is increased time to repair.

What I really like about this design is the ability to change the overall gear ratio VERY quickly. In the Quals, perhaps it would be better to be faster in one match since you're the dominant robot and a low gear at 7-8fps is fine. Yet perhaps in another match you will face a superior defensive robot, thus you would opt for a lower gearing option (5-6fps low gear) in order to push through defense. 2 pairs of large pullies with respective-sized belts would be a simple way to add that versatility.