Alt-BEAM Archive
Message #09961
To: beam@sgiblab.sgi.com
From: BUDSCOTT@aol.com
Date: Wed, 9 Feb 2000 17:33:47 EST
Subject: [alt-beam] Re: aggravating little pager motors..
I used a dremmel power tool to grind down the wieght, it flatened the shaft a
tad, but with the right technique you can get those pesky wieghts off, i had
a lot of difficulty wtih those myself, let me guess MPJA? Your goal should be
to get the least amount of wieght tounching the shaft, that means grinding
down the part that wraps all the way around. You'll also need to grind down
the parts that don't wrap entirely around the shaft, those are slightly
welded on so it might take 5 min. to get a weight off the motor, its a pain
the butt, but those motors work very well so they should be worth the time.
Good Luck!!
-Spencer
9962 Wed, 9 Feb 2000 17:36:17 EST [alt-beam] Symet question beam@sgiblab.sgi.com BUDSCOTT@aol.com Do you know of any symet tutorials, this looks like an interest project,
could anybody steer me in the right direction, i like the fact that it only
uses on motor, cause i've had difficulty finding motors in the past. Thanks
for any response!
-Spencer
9963 Wed, 9 Feb 2000 17:45:14 EST [alt-beam] Re: RoachBot Photovore beam@sgiblab.sgi.com TurtleTek@aol.com In a message dated 2/9/00 4:35:13 PM Central Standard Time,
lifebytes_98@yahoo.com writes:
> What is the blue thing inbetween the photodiodes on
> that bot? I've seen them on a lot of robots, and
> always wondered, but never asked before. My guess is a
> pot in a different packaging than most I've seen
That's right. It's a pot. The ones we get from Digikey (and many other
places) are blue.
>Is that what it is? It's blue, and has a little
> metal piece that has a groove in it like a flat headed
> screw head. Is that the adjustment part of the
> potentiometer?
Right and right again.
> Sorry for the dumb question, but the
> curiosity finally got the best of me.
No problem
-Brien the TurtleTek
9964 Wed, 9 Feb 2000 16:52:09 -0600 Re: ...more new questions.... beam@sgiblab.sgi.com Jim Taylor [mailto:ace27@icdc.com]
> Good morning, please forgive the new questions, I have searched and read
all
> the web pages and FAQs I can find. There seems to be a lot of gluing in
the
> construction of these bots, what about the heat factor?.....if all of the
> parts are glued together doesn't it become a big heat sink?......
Sure but, I don't think you will need to worry about heat much in BEAM apps.
Maybe motor drivers, I wouldn't worry about a popper, or a bicore.
>epoxies are
> often recommended, what sort of epoxy?......
Epoxy is sold in a variety of set up times, from 5 minutes to about half an
hour. I would recommend 5 minute epoxy, sold in syringe tubes. You can
find epoxy in any hobby shop or in hardware stores. Something much more
quick (and less messy) is something called CA ( short for Cynnoacrylic)
glue. It's superglue with a bit more holding power then what you buy in
department stores. Generally only hobby shops sell the.
>how about clear silicone
> sealant, or does its flexibility discount its use ? Thanks......JWS.
>
Yes and no, I think silicone will work, but my experience with silicon glues
is that they don't stick well to some surfaces, and tend to peel off.
> Jim Scolman
> AMS Services, Inc.
> Bothell, WA
> 425-402-1000 x353
> 206-910-6095
> scolmaji@amsworld.com
> Network Administrator
>
>
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James Taylor
URL: http://fly.to/springmeadows
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