pic: Ramp Video

[maltz1881]

That isn't the frame of our robot though.. so we are perfectly safe.: Our frame won't have a suspension.

[FlyingHedgeHog]

Originally Posted by maltz1881

That isn't the frame of our robot though.. so we are perfectly safe.: Our frame won't have a suspension.

FRAME PERIMETER – the polygon defined by the outer-most set of exterior vertices on the ROBOT (without the BUMPERS attached) that are within the BUMPER ZONE. To determine the FRAME PERIMETER, wrap a piece of string around the ROBOT at the level of the BUMPER ZONE - the string describes this polygon.

[FlyingHedgeHog]

Originally Posted by FlyingHedgeHog

FRAME PERIMETER – the polygon defined by the outer-most set of exterior vertices on the ROBOT (without the BUMPERS attached) that are within the BUMPER ZONE. To determine the FRAME PERIMETER, wrap a piece of string around the ROBOT at the level of the BUMPER ZONE - the string describes this polygon.

I think the judges would frown on that, it's kind of lawyer-ing, you know? I mean, the point of that Rule R11 is to prevent you from doing that. I don't think you should do it, as much as I would LOVE to...

[Nuttyman54]

Originally Posted by FlyingHedgeHog

I think the judges would frown on that, it's kind of lawyer-ing, you know? I mean, the point of that Rule R11 is to prevent you from doing that. I don't think you should do it, as much as I would LOVE to...

This picture was posted a year ago as a prototype concept. It may or may not have any bearing on what team 1322 is doing this year.

...not that it wouldn't be pretty awesome to see in competition...

[DonRotolo]

Originally Posted by Nuttyman54

This picture was posted a year ago

Words worth repeating.

[joeweber]

As you can see from the drawing the frame is stationary on level ground and does not articulate. When it goes over the ramp the drive system articulates but the frame remains solid. ( the frame is where the bumpers are attached).

[GaryVoshol]

Joe, it seems to me that as the middle wheel goes up, the outer wheels go down. Wouldn't this cause the bumper height to change? Bumpers must remain in the BUMPER ZONE, 10-16" off a level surface.

[Rosiebotboss]

Originally Posted by GaryVoshol

Joe, it seems to me that as the middle wheel goes up, the outer wheels go down. Wouldn't this cause the bumper height to change? Bumpers must remain in the BUMPER ZONE, 10-16" off a level surface.

Key phrase--"level surface". If the robot is set up on a level surface, are the bumbers in the bumper zone?

[Brad Voracek]

You also have to watch out for your max height.

Don't make the robot 5 feet above the frame, make it 5 feet above the wheel at the lowest point.

How they would test this in the box.. I don't know.

But still, ask the Q&A if you guys go with it. Awesome drive.

[joeweber]

Originally Posted by GaryVoshol

Joe, it seems to me that as the middle wheel goes up, the outer wheels go down. Wouldn't this cause the bumper height to change? Bumpers must remain in the BUMPER ZONE, 10-16" off a level surface.

<r07>The BUMPERS must be located entirely within the BUMPER ZONE when the ROBOT is standing normally on a flat floor,

The measurement is taken when the robot is on flat floor. We meet all requirements that we have found in the rules. The bumpers are between 10 an 16 inches above the floor when on flat ground.

[Gdeaver]

If I was an inspector, I would measure your robots bumpers with all wheels in contact with the floor . Then I would ask you to full articulate the wheels and then measure the bumpers. If at both configurations the bumpers where with in the bumper zone then I would be satisfied. If not then I would turn this down. I am not an inspector nor am I a member of the GDC. You better Q & A this soon before you go farther. From the picture your bumper height appears to be variable and not fixed or static.

[JB987]

Originally Posted by Gdeaver

If I was an inspector, I would measure your robots bumpers with all wheels in contact with the floor . Then I would ask you to full articulate the wheels and then measure the bumpers. If at both configurations the bumpers where with in the bumper zone then I would be satisfied. If not then I would turn this down. I am not an inspector nor am I a member of the GDC. You better Q & A this soon before you go farther. From the picture your bumper height appears to be variable and not fixed or static.

Sure looks like bumper height would remain fixed while on the flat floor as the regs require.

[BJT]

Everyones bumpers will be out of the bumper zone when going over a bump, so if this thing is legal on the floor it seems fine to me.

[Gdeaver]

If the robot is flat on the floor and the middle wheel is articulated up, are the bumpers still in the bumper zone? This really needs a Q&A. Also with the bumpers up high this year, robot frames will be subjected to allot more stress than in past years with the low riders. Make sure those supports are robust.

[betsy888]

Looks like your center wheels are 2 individual omni wheels per side, each one slaved to either the fore or aft mecanum wheel. So basically the center wheels are commanded to have the same velocity profile as the front/back wheels. Is this accurate?
btw, awesome design and thanks for sharing your ideas. We're a second year team so still need lots of help!