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-   -   Can we use Fiber Glass? (http://www.chiefdelphi.com/forums/showthread.php?t=41996)

Team1726Nerds 16-01-2006 22:59
Re: Can we use Fiber Glass?
 
Quote:
Originally Posted by s_forbes
We are using fiberglass pultrusions for our chassis and some re-enforcements on our robot this year. We heard how great it is to work with and also how strong it is for the weight and decided to go with it. It's a tad out of the ordinary, too, which makes it appealing to us.
Yeah, our mentor team has used protruded fiberglass for a few years and have never had a problem. Our team isn't that weird.

sdcantrell56 16-01-2006 23:25
Re: Can we use Fiber Glass?
 
How do you attach it and what size tubing?

s_forbes 16-01-2006 23:30
Re: Can we use Fiber Glass?
 
We are planning on bolting together pieces of c-channel with brackets on top and bottom to secure every joint.. This should be sturdy enough, but we shall see...

We are just a rookie team, so we have no idea how well this will work.

Biff 16-01-2006 23:59
Re: Can we use Fiber Glass?
 
Quote:
Originally Posted by s_forbes
We are planning on bolting together pieces of c-channel with brackets on top and bottom to secure every joint.. This should be sturdy enough, but we shall see...

We are just a rookie team, so we have no idea how well this will work.
We have used fiberglass square tube in our last two robots,(2" for out first and 1" and 1.5" on our last) our source is the one listed further up in the post. What we learned is 1" square is a lot stronger than it looks. Put a small section of square steel tube or solid plastic in the ends where you need to drill through and you won't have to worry about crushing the places where you bolt things together. The kit parts make good items to use for corners, or just an L of aluminium covering the joint with through bolts. Run a vacuum when cutting and just use a fine toothed hand powered hack saw, Power saws work but spread the dust all over the place. The tubes also come is sizes that will slide inside each other, both in round and square. Hope this helps

waialua359 18-01-2006 19:58
Re: Can we use Fiber Glass?
 
Quote:
Originally Posted by Budda648
I prefer lexan... heh... although I don't think you can mold it like with fiberglass.

What exactly is lexan?

waialua359 18-01-2006 20:00
Re: Can we use Fiber Glass?
 
Quote:
Originally Posted by MikeJ675
depending on the thickness, you can vacuum form it, and heating allows some pliability if you know what you're doing.
Cool I didn't know that. Thanks for the comment

Rick TYler 18-01-2006 20:03
Re: Can we use Fiber Glass?
 
Quote:
Originally Posted by waialua359
What exactly is lexan?
Polycarbonate (a type of plastic)

thewayiam919 18-01-2006 20:06
Re: Can we use Fiber Glass?
 
Quote:
Originally Posted by Gdeaver
Team 104 used fiberglass pultrusions for the arm in 2004 and 2005. Pultrusions are readily available and can be cut and drilled like wood. A piece of 1/4" birch plywood with a layer of glass laminated on both sides makes a very ridged and strong panel. Mixing some epoxy and some chopped glass fibers allows the casting of couplers and other parts. I would strongly suggest that if you use fiberglass cloth and epoxy you spend a little more money and use S-2 cloth. About 30% more strength for the same weight. The pultrusions are easy. Laying up composites takes allot more skill. If you don't have someone experienced with composites I would recommend not going with it this year. Do your research and practise in the off season next year.
Is epoxy legal???? :confused:

Kyle Love 18-01-2006 20:10
Re: Can we use Fiber Glass?
 
Personally, I prefer Tuffak over Lexan. Pretty much the same thing, but I have had better experiences with Tuffak....(probably just a luck thing)

PS Here is some random info about different Polycarbonate types.

lukevanoort 20-01-2006 13:48
Re: Can we use Fiber Glass?
 
Quote:
Originally Posted by thewayiam919
Is epoxy legal???? :confused:
We used an epoxy clay in our front wheels to reduce traction and let our 4WD turn. The inspectors at both VCU and Nats had no problems with it. Although the guy at nats had serious issues with our wiring and a piece of tape that wasn't holding anything on.


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