pic: Week Three 2009

[joeweber]

loading photo ...

[Cory]

Maybe I'm missing something, but if your robot only has two wheels, how can you satisfy <R06>?

[danshaffer]

Originally Posted by Cory

Maybe I'm missing something, but if your robot only has two wheels, how can you satisfy <R06>?

I guess that if the trailer hitch has enough support in that direction, then everything might work out ok...?
But it still has to balance to fit in the box, right?
I smell a Segway-drive!

[Alex Cormier]

From looking at a few pictures on the teams site. Looks like they are going with a 3 wheel design, with a single wheel in the front. Pretty good work done here in only 3 weeks. Looks good, keep up the work.

[Barry Bonzack]

That's a lot of progress for 3 weeks! I'm trying to figure out if it can pick up from the floor, or if its purely payload specialist loaded.

Let me know if you get video of this posted.

[smurfgirl]

That's one nice-looking robot! Is it human-loaded only? I dig the clear sides. (:

[Michael Corsetto]

This may be a premature assumption, but isn't it impossible (with the current configuration shown) to legally protect the back end with bumpers? There isn't 6 inches of space on either side of the trailer hitch to mount bumpers too, so both sides of those two rear corners can't be protected.

Besides nit-picking at this years bumper rules, looks like a pretty cool bot. Does it have two separate shooter "chutes" for balls to flow out of?

[dtengineering]

Oh my goodness... I was simply admiring the robot until the question about the bumpers came up.

My concern was initially over rule R8 part I, "Bumpers must protect all exterior corners of the bumper perimeter" as the corner between the trailer hitch section on the angled side piece is a corner and, with bumpers on only one side, would not be protected. However examining the reference figure 8-2, this design would be in keeping with the figure specifically referenced by the rule. I'm not up on all my bumper Q&A's, so perhaps there has been an answer to this already... but ARE the rear corners of the robot adjacent to the trailer hitch in figure 8-2 protected by bumpers? Do they have to be? If that hasn't been answered you might want to get an answer on that one as when a drawing is inconsistant with a wording, the wording takes precedence.

My other concern would be R18 E, concerning the trailer bumpers contacting the robot bumpers before the trailer tongue contacts the bumpers. It may be that this happens in this design, it is hard to tell without seeing it with bumpers on and a trailer attached.

I am assuming that with bumpers on the front of the robot that 2/3 of the bumper perimeter is covered?

Jason

[Vikesrock]

Originally Posted by Michael Corsetto

This may be a premature assumption, but isn't it impossible (with the current configuration shown) to legally protect the back end with bumpers? There isn't 6 inches of space on either side of the trailer hitch to mount bumpers too, so both sides of those two rear corners can't be protected.

The 2 corners on either side of the trailer hitch do appear to be exterior corners of the BUMPER PERIMETER which cannot be protected by BUMPERS on both sides of the corner with the pictured design.

[Alex Cormier]

There is no real need to go after these people if you look at the pictures on the teams site. It's all valid. So take some time and look at the pictures.

[Liz Smith]

Originally Posted by Alex Cormier

There is no real need to go after these people if you look at the pictures on the teams site. It's all valid. So take some time and look at the pictures.

I would take a pause before you declare that "it's all valid".

According to the rule book, <R08-I->, all exterior corners must be protected.

According to this Q&A (part 2):
"2. As indicated in Rule <R08-I>, all exterior corners of the BUMPER PERIMETER must be protected by BUMPERS. Both "sides" of the corner must be protected."
source: http://forums.usfirst.org/showthread.php?t=11159

According to this Q&A:

"An "exterior corner" of the ROBOT is one where the BUMPER PERIMETER forms a vertex...."
source: http://forums.usfirst.org/showthread.php?t=11270

From those, I have drawn conclusions about the robot frame designs I've been working with. I'm not the ultimate source of what designs are valid/not valid, but be aware that these Q&A responses are there and are very specific.

[=Martin=Taylor=]

Ah yes... the double barreled shotty...

A design very similar to ours. Looks awesome!

[Gdeaver]

To be so far along but with the bumper problems. You need to take corrective action next week.

[joeweber]

Pictures http://www.team1322.org/robotics_08-09.htm

Yes we will have bumpers on the angle corners. The trailer will make contact just before the trailer tong hits. We are hoping to be able to turn sharper with this design. That bumper segment is about 7 inches long. <R08> figure 8-2 shows an angle bumper. We are only human player feed. They say do one thing and do it well, we can load 20 balls and shoot them two at a time approximately 15 feet with camera assistance. We are balancing most of the weight on the two drive wheels, the rest of the weight (just enough to keep in on the ground on forward motion) will be forward on a single caster.

[joeweber]

My concern was initially over rule R8 part I, "Bumpers must protect all exterior corners of the bumper perimeter" as the corner between the trailer hitch section on the angled side piece is a corner and, with bumpers on only one side, would not be protected.

Jason[/quote]


Would that not be an interior corner as apposed to an exterior corner? When the trailer is attached, that area becomes in inaccessible.