Chief Delphi - New VEX Game Announced!

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Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- VEX (http://www.chiefdelphi.com/forums/forumdisplay.php?f=162)

- - New VEX Game Announced! (http://www.chiefdelphi.com/forums/showthread.php?t=77186)

Rick TYler

08-05-2009 22:39

Re: New VEX Game Announced!

Quote:

Originally Posted by ttldomination (Post 858192)

Are rubber bands "technically" part of the VEX kit?

VEX sells #32 rubber bands, but forget that -- all the cool kids L-O-V-E the VEX latex tubing:

Quote:

VEX Latex Tubing comes in (2) 5 ft lengths for a total of 10 ft. The VEX Latex Tubing is made from 35A durometer Latex. The Outside Diameter is 1/8 inch and the Inside Diameter is 1/16 inch. This VEX Tubing can stretch up to 3 times its length and still spring back to its original shape. VEX Latex Tubing is great for any application on a VEX robot requiring spring loading.

P/N: VEX-LATEX-TUBING-120 VEX Latex Tubing, 10 ft

SCROSSLEY-GCEC

08-05-2009 23:13

Re: New VEX Game Announced!

Quote:

Originally Posted by rocketperson44 (Post 858189)

In the meantime, just use a spool to wind vex chain up, for a similar effect.

you're probably on Tim's death list now. He hates the stuff

Rick TYler

08-05-2009 23:17

Re: New VEX Game Announced!

Quote:

Originally Posted by SCROSSLEY-GCEC (Post 858199)

you're probably on Tim's death list now. He hates the stuff

The little VEX chain is like anything else -- it works great for what it works for. In Elevation, five of our six robots used a chain for the final drive to the wheels, and it worked flawlessly all season. I think one robot popped loose one chain in one practice match. The rest of the year was great. One bad place to use the little chains is in the lift system for something heavy.

SCROSSLEY-GCEC

08-05-2009 23:27

Re: New VEX Game Announced!

haha we used it to lift our tank tread arm for elevation. he was so p***ed off at me and wasn't even part of my team :P
we beat his team in a competition with it though ;)
but yeah we remade our arm and it became too heavy and wouldn't work :P shouldn't try to improve a good thing! so the chains snapped a few times and now everyone who saw the robot has a vendetta against the chain.

Joe G.

08-05-2009 23:29

Re: New VEX Game Announced!

Quote:

Originally Posted by SCROSSLEY-GCEC (Post 858199)

you're probably on Tim's death list now. He hates the stuff

In my experience, chain+stall situation, or sudden shock load (i.e. chain is slack, then heavy object it is supporting falls) = BAAD, but in most other cases, it is fine for VRC sized robots. And when in doubt, it can always be doubled/tripled up for redundancy.

Akash Rastogi

08-05-2009 23:49

Re: New VEX Game Announced!

Quote:

Originally Posted by SCROSSLEY-GCEC (Post 858201)

shouldn't try to improve a good thing!

Haha, hate to laugh at this for a second, but that's just plain wrong in engineering as I've learned through FRC. If you aren't constantly trying to improve something, you aren't doing it right.

Our team jokes around with this motto: "Its not just good, its good enough."

SCROSSLEY-GCEC

08-05-2009 23:56

Re: New VEX Game Announced!

lol fair point :P but i'm still bummed that we had a brilliant arm that we rebuilt completely just cos bits of it were held together with zipties. we lost out on going to Dallas cos of it

Rick TYler

09-05-2009 00:05

Re: New VEX Game Announced!

Quote:

Originally Posted by SCROSSLEY-GCEC (Post 858210)

lol fair point :P but i'm still bummed that we had a brilliant arm that we rebuilt completely just cos bits of it were held together with zipties. we lost out on going to Dallas cos of it

575 built their arm over Christmas break and made just about no changes to it after that. They had somehow found a magic combination of speed, weight, and cube-gripping ability and were afraid to mess with it. When their Programming Skills routine required a slightly longer capacity you should have seen the gyrations they went through to add length without actually changing anything. So, continually improving the machine is a good idea except when it isn't.

SCROSSLEY-GCEC

09-05-2009 00:10

Re: New VEX Game Announced!

Quote:

Originally Posted by Rick TYler (Post 858211)

So, continually improving the machine is a good idea except when it isn't.

i think mine was one of those isn't's... but most of our other improvements went down well

ttldomination

09-05-2009 12:42

Re: New VEX Game Announced!

Quote:

Originally Posted by Rick TYler (Post 858200)

One bad place to use the little chains is in the lift system for something heavy.

I can vouch for that.

We used the chain back in Quad Quandary to attempt to lift an arm, but every time or every other time, the chain would fly apart.

bobwrit

09-05-2009 15:23

Re: New VEX Game Announced!

Interesting correlation: http://www.chiefdelphi.com/forums/sh...6&postcount=40

ttldomination

09-05-2009 15:53

Re: New VEX Game Announced!

THAT is extremely interesting. :D.

SCROSSLEY-GCEC

09-05-2009 20:07

Re: New VEX Game Announced!

Oh wow it is O_o
Just goes to show that maybe the VEX people actually pay attention to Delphi posters! (or not)

(hehe this post was officially number 123 for me)

The Zevling

09-05-2009 20:21

Re: New VEX Game Announced!

Quote:

Originally Posted by rocketperson44 (Post 858194)

Now they are. Most of the "In addition to vex parts, you can use x, y, and z" parts have become vex products over the years, such as rubber bands, velcro, and non-slip padding. I wouldn't be surprised if rope was next on the list.

What about zip-ties?

Joe G.

09-05-2009 20:27

Re: New VEX Game Announced!

Quote:

Originally Posted by The Zevling (Post 858299)

What about zip-ties?

4" zipties have been a part of the vex kit from the very beginning.

Not sure whether 11" zipties were legalized before vex sold them, but they do now.

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