Alt-BEAM Archive

Message #08413



To: beam@sgiblab.sgi.com
From: JVernonM@aol.com
Date: Sat, 18 Dec 1999 17:53:26 EST
Subject: [alt-beam] Re: Carbon fiber


In a message dated 12/18/99 5:35:52 PM Eastern Standard Time,
robotbreeder@telus.net writes:

> I picked up some carbon fiber rods from a local kite store. They had all
> different sizes, i got their thinnest (about 1mm) and one about 2.5mm.
That's a good idea. I hadn't thought of that material. You could even add
spring to the step of a simple two motor walker using those rods as legs or
pieces of the legs. I'll have to look into it. Thanks!

See ya,
Jim
http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
ICQ# 55657870



8414 Sat, 18 Dec 1999 15:05:10 -0800 [alt-beam] Re: Carbon fiber beam@sgiblab.sgi.com Bruce Robinson > adam-m wrote:
>
> Bot frame tip:
>
> I picked up some carbon fiber rods from a local kite store. They had
> all different sizes, i got their thinnest (about 1mm) and one about
> 2.5mm.

So how is it to cut, Adam? I recall reading a while back that it was
extremely hard to saw carbon fiber.

It does have some very nice properties, and the conductivity can be used
as a bonus (if you're aware of it).

Bruce



8415 Sat, 18 Dec 1999 18:26:35 EST [alt-beam] Re: Head circuits beam@sgiblab.sgi.com JVernonM@aol.com In a message dated 12/18/99 5:47:53 PM Eastern Standard Time,
phillip@ryals.com writes:

> A head cicuit looks at the brightest light. Why not change the design of
the
> average 'bot so that the solar panel is in line with the PD's? So that the
> solar cell points at the same thing the PD's point at. That way, wherever
> the brightest light is, you can always be sure that the robot is getting
the
> most out of it's light source. Especially if it can't go any farther
toward
> the light because of terrain.
I've been thinking of something like that myself. I've been fiddling with
Craig's solar power plant and keep wondering why I should have a bot go find
the thing, figure out how to get a connection to feed, and release when
charged, when I could just stick the thing on it's back. A bot with a solar
array that is always kept at maximum charging angles. I suspect that the
problem would be that the power required to move a 2DOF (which would be
needed to account for pan and tilt) head simply to charge the bot may use
more power than the gain it produces. Besides, Craig's solar power plant
would make for a truly unique BEAM plant in the true sense of the name. Ah,
so many ideas and so little time.

See ya,
Jim
http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
ICQ# 55657870



8416 Sat, 18 Dec 1999 15:38:27 -0800 [alt-beam] Re: Carbon fiber "'beam@sgiblab.sgi.com'" Wilf Rigter Be very careful with cutting those carbon fiber rods. Read all warnings =
and
instruction about the hazards of working with carbon fibers.

wilf


> -----Original Message-----
> From: adam-m [SMTP:robotbreeder@telus.net]
> Sent: Saturday, December 18, 1999 2:28 PM
> To: beam@sgiblab.sgi.com
> Subject: Carbon fiber
>=20
> Bot frame tip:
> =A0
> I picked up some carbon fiber rods from a local kite store.=A0 They =
had all
> different sizes, i got their thinnest (about 1mm) and one about =
2.5mm.
> =A0
> Wow!=A0 Extremely strong, very light, and neat flexible properties on =
the
> thin stuff (great rear suspension on a trailing wheel). It makes =
for=A0very
> strong light frames.
> =A0
> You can superglue it, or get that copper sticky tape from stained =
glass
> supply places (which is dynamite for other things too..).=A0 A little =
wrap
> of the copper tape on the ends and you can solder joints together.
> =A0
> The Carbon fiber is slightly conductive - which i found out =
annoyingly
> after wrapping some transistor pins around it wondering why nothing =
worked
> - so keep electricals non contact.
> =A0
> The rods were very inexpensive.=A0 I spent $6 CAD on the 2=A0 1mm and =
1 2.5mm.
> =A0
> Try it, great stuff.
> =A0
> /A



8417 Sat, 18 Dec 1999 20:16:30 -0400 [alt-beam] Re: Miller Engine - licensing... alt-beam@egroups.com michael.hirtle@ns.sympatico.ca (Michael Hirtle) I think it is a cool circuit :-)
and please, share with us other schematics u discover in the future, i don't
want the acts of the minority of the list to mess up what the rest of us can
gain from and learn from stuff u can share :-)

Dave Hrynkiw wrote:

> Regardless of the opinions on the list regarding licensing issues, we still
> licensed the circuit from Miller because
>
> 1) it's a good circuit
> 2) HE designed it
> 3) it's quite unethical to make use of it without appropriate permission
>
> Getting something this small patented would be a foolish - waste of money
> and time. We're sharing it with everybody because it's simple and cheap. If
> it gets utilized in ways that it shouldn't, then I suppose it means it'll
> be the last circuit we'll openly share.
>
> Jeez, and I was hoping to have some feedback on the _circuit_, not the
> legal issues!
>
>
>
> -Dave
> ---------------------------------------------------------------
> "Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
> that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
> 2 vowels. Pronounciation? _SMITH_".
> http://www.solarbotics.com
>
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