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  #16   Spotlight this post!  
Unread 25-01-2009, 02:45
Akash Rastogi Akash Rastogi is offline
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Re: pic: 816 as of 1-24-09

Quote:
Originally Posted by jason701802 View Post
I've never seen belting like that, what is it?
Its just wheel tread or conveyor belting. Cut into strips.
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Unread 25-01-2009, 02:56
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Re: pic: 816 as of 1-24-09

Quote:
Originally Posted by jason701802 View Post
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.)
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Unread 25-01-2009, 03:00
Akash Rastogi Akash Rastogi is offline
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Re: pic: 816 as of 1-24-09

Quote:
Originally Posted by Tristan Lall View Post
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...
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Last edited by Akash Rastogi : 25-01-2009 at 03:02.
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  #19   Spotlight this post!  
Unread 25-01-2009, 13:00
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Re: pic: 816 as of 1-24-09

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Originally Posted by Michael Corsetto View Post
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").

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Originally Posted by dtengineering View Post
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.

Quote:
Originally Posted by jason701802 View Post
I've never seen belting like that, what is it?
Quote:
Originally Posted by Tristan Lall View Post
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.
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  #20   Spotlight this post!  
Unread 25-01-2009, 13:33
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Re: pic: 816 as of 1-24-09

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Originally Posted by thefro526 View Post
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?
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  #21   Spotlight this post!  
Unread 25-01-2009, 18:36
Akash Rastogi Akash Rastogi is offline
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Re: pic: 816 as of 1-24-09

Quote:
Originally Posted by Danny McC View Post
Nahhhh Kramers dad gave it to us. I remember he brought it in and I was like WTH is that?
Close up pic please.
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  #22   Spotlight this post!  
Unread 25-01-2009, 21:08
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Re: pic: 816 as of 1-24-09

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Originally Posted by Akash Rastogi View Post
Close up pic please.
Of the belting? I'll take one tomorrow.
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Unread 26-01-2009, 00:55
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Re: pic: 816 as of 1-24-09

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

I really like the design hope you do well
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Unread 26-01-2009, 22:03
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Re: pic: 816 as of 1-24-09

As It sits tonight....



Belting.....

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Unread 27-01-2009, 09:28
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Re: pic: 816 as of 1-24-09

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.

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Unread 27-01-2009, 12:19
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Re: pic: 816 as of 1-24-09

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!
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Unread 27-01-2009, 12:50
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Re: pic: 816 as of 1-24-09

Another request - that belting looks neat - what is it? where'd you get it?
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Unread 27-01-2009, 17:54
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Re: pic: 816 as of 1-24-09

Quote:
Originally Posted by Elgin Clock View Post
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.

Quote:
Originally Posted by pgaston View Post
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.
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Last edited by thefro526 : 27-01-2009 at 17:58.
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Unread 27-01-2009, 20:44
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Re: pic: 816 as of 1-24-09

Woa how many belts are there?
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Unread 27-01-2009, 23:10
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Re: pic: 816 as of 1-24-09

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Originally Posted by 5n1p3r View Post
Woa how many belts are there?
Only 7 Actual Belts. But we have a bunch of little belt wrapped around the rollers to make them grippier.
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