pic: 816 as of 1-24-09

[dtengineering]

I don't know if you've already got something planned, but have you thought about protecting the intake roller?

On impacting the corner of another robot, the contact may not be bumper-to-bumper, but rather the edge of the other robot (usually reinforced or supported) to the centre of your roller. Perhaps the roller is designed to take this kind of hit, but it would be a shame to see a nice looking robot like that out of commission due to a weak point.

Assuming the roller IS designed for a full-on impact, if the relative velocity of the two robots is at an angle, can the roller mounts take a sideways impact force?

Jason

[jason701802]

I've never seen belting like that, what is it?

[Akash Rastogi]

Originally Posted by jason701802

I've never seen belting like that, what is it?

Its just wheel tread or conveyor belting. Cut into strips.

[Tristan Lall]

Originally Posted by jason701802

I've never seen belting like that, what is it?

It's a segmented V-belt. It's made from some sort of fabric laminate, and composed of individual links. You twist the tab 90° and insert it into the slot on the next link; then untwist. They lock together under tension.

I believe that Small Parts sells it...this ought to be it. (188 used it for a hybrid wheel-tread thing on the 1999 drivetrain.)

[Akash Rastogi]

Originally Posted by Tristan Lall

It's a segmented V-belt. It's made from some sort of fabric laminate, and composed of individual links. You twist the tab 90° and insert it into the slot on the next link; then untwist. They lock together under tension.

I believe that Small Parts sells it...this ought to be it. (188 used it for a hybrid wheel-tread thing on the 1999 drivetrain.)

Really now? Doesn't look like anything more than wheel tread...

Huh. Never seen that before then...

[thefro526]

Originally Posted by Michael Corsetto

Is the kinda "gut" area between the intake roller and conveyor belt system used for storage, or is it blocked off with lexan so the balls can't bunch up? How many balls can the system hold? How well does that front roller grab running at 600rpm? What sort of compression do you put on the balls for the front roller and conveyor system? Sorry about all the questions, looks like a pretty slick design, post video soon please

Most of the front open area is used as a hopper of sorts some of it will be used for electronics mounting. If you look closely you can see 2 pieces of angle just kinda sitting there and thats where our electronics shelf mounts to. Theoretical capacity is between 15-20 balls depending on how they all settle in the system. The front roller grabs very well and can handle 2 balls at a time and both the conveyor System and front roller compress the ball about 1/2" give or take a bit depending on what you say a ball's diameter is (I say it's 9").

Originally Posted by dtengineering

I don't know if you've already got something planned, but have you thought about protecting the intake roller?

On impacting the corner of another robot, the contact may not be bumper-to-bumper, but rather the edge of the other robot (usually reinforced or supported) to the centre of your roller. Perhaps the roller is designed to take this kind of hit, but it would be a shame to see a nice looking robot like that out of commission due to a weak point.

Assuming the roller IS designed for a full-on impact, if the relative velocity of the two robots is at an angle, can the roller mounts take a sideways impact force?

Jason

In theory the front roller should never be hit. It's about 8.5 inches off the ground at it's lowest point which is out of the bumper zone. If it did hit the structure of another robot I hope it'll break and then we just have to replace a piece of pvc. On Monday I'll look into making a guard for it so that it would be metal to robot contact before robot to roller.

Originally Posted by jason701802

I've never seen belting like that, what is it?

Originally Posted by Tristan Lall

It's a segmented V-belt. It's made from some sort of fabric laminate, and composed of individual links. You twist the tab 90° and insert it into the slot on the next link; then untwist. They lock together under tension.

I believe that Small Parts sells it...this ought to be it. (188 used it for a hybrid wheel-tread thing on the 1999 drivetrain.)

Thats the exact belt I think. We've had it for years and I believe we got it from the HVAC Teacher at my school because they use it for belting on compressors.

[Danny McC]

Originally Posted by thefro526

Thats the exact belt I think. We've had it for years and I believe we got it from the HVAC Teacher at my school because they use it for belting on compressors.

Nahhhh Kramers dad gave it to us. I remember he brought it in and I was like WTH is that?

[Akash Rastogi]

Originally Posted by Danny McC

Nahhhh Kramers dad gave it to us. I remember he brought it in and I was like WTH is that?

Close up pic please.

[thefro526]

Originally Posted by Akash Rastogi

Close up pic please.

Of the belting? I'll take one tomorrow.

[fordchrist675]

The bot looks really killer. Out team is doing something similar.

I really like the design hope you do well

[thefro526]

As It sits tonight....



Belting.....

[Greg Peshek]

It looks like this V-Belt belting from McMaster: 6173K41. Not sure if that's the right width, or if that's the right stuff, but it looked familiar when I saw that picture and I remembered seeing it when looking at belts.

It may or may not be it for people looking for the same stuff.

-Greg P.

[Elgin Clock]

Dan & Dustin, where are you guys competing this year?

Edit: Never mind, TBA says Philly again & NJ? Too bad you won't be in NYC with us.

Looks like another awesome bot by 816 this year after last year's cool bot as well!

[pgaston]

Another request - that belting looks neat - what is it? where'd you get it?

[thefro526]

Originally Posted by Elgin Clock

Dan & Dustin, where are you guys competing this year?

Edit: Never mind, TBA says Philly again & NJ? Too bad you won't be in NYC with us.

Looks like another awesome bot by 816 this year after last year's cool bot as well!

We'll Be competing in Jersey, Philly and The Championship. It sucks that we won't get another opportunity to kick some butt with you guys. I might have to make the trip up to NYC to see you guys in action though.

Originally Posted by pgaston

Another request - that belting looks neat - what is it? where'd you get it?

We got it donated. There's a few links to it in the above posts.


In Robot News!

During School today I rigged the motors together to see how everything's going to work and it looks good. Our Capacity should exceed 20 and we can score 3 at at time with about a 90% success rate. It takes about 3-4 Seconds to offload 10 balls.

Might Have Video Tomorrow or Thursday But I can't promise anything until Friday-Saturday.